WO2018006354A1 - 音频播放系统、外接扩展设备、音频播放方法及装置 - Google Patents

音频播放系统、外接扩展设备、音频播放方法及装置 Download PDF

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Publication number
WO2018006354A1
WO2018006354A1 PCT/CN2016/089161 CN2016089161W WO2018006354A1 WO 2018006354 A1 WO2018006354 A1 WO 2018006354A1 CN 2016089161 W CN2016089161 W CN 2016089161W WO 2018006354 A1 WO2018006354 A1 WO 2018006354A1
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WIPO (PCT)
Prior art keywords
signal
interface
sub
usb
pin
Prior art date
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PCT/CN2016/089161
Other languages
English (en)
French (fr)
Inventor
梁欣
费玉昆
温仲文
龙桂明
周明
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN201680000731.3A priority Critical patent/CN107637088B/zh
Priority to RU2017120357A priority patent/RU2668714C1/ru
Priority to JP2017510558A priority patent/JP6491320B2/ja
Priority to PCT/CN2016/089161 priority patent/WO2018006354A1/zh
Priority to EP17176766.8A priority patent/EP3267437B1/en
Priority to US15/636,656 priority patent/US10839782B2/en
Publication of WO2018006354A1 publication Critical patent/WO2018006354A1/zh

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/36—Accompaniment arrangements
    • G10H1/361—Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00—Speech synthesis; Text to speech systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2220/00—Input/output interfacing specifically adapted for electrophonic musical tools or instruments
    • G10H2220/155—User input interfaces for electrophonic musical instruments
    • G10H2220/211—User input interfaces for electrophonic musical instruments for microphones, i.e. control of musical parameters either directly from microphone signals or by physically associated peripherals, e.g. karaoke control switches or rhythm sensing accelerometer within the microphone casing
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/011—Files or data streams containing coded musical information, e.g. for transmission
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
    • G10H2240/201—Physical layer or hardware aspects of transmission to or from an electrophonic musical instrument, e.g. voltage levels, bit streams, code words or symbols over a physical link connecting network nodes or instruments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/171—Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments
    • G10H2240/201—Physical layer or hardware aspects of transmission to or from an electrophonic musical instrument, e.g. voltage levels, bit streams, code words or symbols over a physical link connecting network nodes or instruments
    • G10H2240/271—Serial transmission according to any one of RS-232 standards for serial binary single-ended data and control signals between a DTE and a DCE
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2240/00—Data organisation or data communication aspects, specifically adapted for electrophonic musical tools or instruments
    • G10H2240/325—Synchronizing two or more audio tracks or files according to musical features or musical timings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42203—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] sound input device, e.g. microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

Definitions

  • the present disclosure relates to the field of audio processing, and in particular, to an audio playback system, an external expansion device, an audio playback method, and an apparatus.
  • Karaoke (English: Karaoke is a popular entertainment and entertainment method. In order to enable users to experience karaoke at home, more and more TV sets are beginning to support karaoke.
  • the karaoke processing chip built in the television acquires the user's voice signal through the microphone connected to the television, fuses the user's voice signal with the accompaniment audio signal, and fuses the fused sound.
  • the audio signal is mixed and processed, and finally the processed sound mixing signal is played by the power amplifier of the television to achieve a professional karaoke effect.
  • the cost of incorporating a karaoke processing chip in a television set is high and is not conducive to upgrading.
  • the present disclosure provides an audio playback system, an external expansion device, an audio playback method, and an apparatus.
  • the technical solution is as follows:
  • an audio playback system in a first aspect, includes: a microphone device, an external expansion device, and a television device.
  • the microphone device is connected to the external expansion device, and the external expansion device and the television device are connected through an integrated physical interface.
  • the television device supplies power to the external expansion device through an integrated physical interface and performs signal transmission;
  • a microphone device configured to transmit the collected user sound signal to the external expansion device
  • a television device for transmitting an accompaniment audio signal to an external extension device through an integrated physical interface
  • the external expansion device is configured to perform mixing processing on the user sound signal and the accompaniment audio signal to generate a mixed signal; and transmit the mixed signal to the power amplifier circuit of the television device through the integrated physical interface;
  • the television device is also used to play the mix signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S (Inter-IC Sound) sub-interface, and the I2S sub-interface is used for transmitting the I2S signal;
  • I2S Inter-IC Sound
  • a television device for transmitting an accompaniment audio signal to an external extension device through an I2S sub-interface
  • An external expansion device for transmitting a mixed signal to the power amplifier circuit through the I2S sub-interface.
  • the integrated physical interface is a USB 3.0 (Universal Serial Bus 3.0) interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 interface The USB3.0 pin is used to form the I2S sub-interface;
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin;
  • the first pin is used to transmit a SCK (continuous Serial Clock) signal
  • the second pin is used to transmit a WS (Word Select) signal
  • the third pin is used to transmit an SD IN (Serial Data IN) signal
  • the fourth pin is used to transmit a SD OUT (Serial Data OUT) signal
  • the fifth pin is used to transmit any of the MCLK (Master Clock) signal, SD IN or SD OUT.
  • MCLK Master Clock
  • the I2S sub-interface has an open state and a closed state; in the closed state, the I2S sub-interface prohibits transmitting the I2S signal;
  • a television device configured to acquire a device identifier of an external device when connected to an external device through an integrated physical interface
  • the television device is further configured to: if the device identifier indicates that the external device is an external expansion device, set the I2S sub-interface to an open state;
  • the television device is further configured to set the I2S sub-interface to the off state if the device identifier indicates that the external device is not an external expansion device.
  • the external expansion device is further configured to transmit a mixing signal to an AP (Application Processor) of the television device by using an I2S sub-interface in the integrated physical interface, where the AP is configured to store the mixed signal as a recording.
  • AP Application Processor
  • the television device is further configured to transmit a USB accompaniment audio signal by using a USB2.0 sub-interface and calling UAC (USB Audio Class) to the external expansion device;
  • UAC USB Audio Class
  • the external expansion device is also used to convert the USB accompaniment audio signal into an I2S accompaniment audio signal through the bridge chip; to mix the user sound signal and the I2S accompaniment audio signal; and convert the I2S mixed signal into a USB mixed signal through the bridge chip.
  • the system also includes an external power amplifier, and the external expansion device passes the Line Out (Chinese: Cable output) interface or SPDIF (SONY/PHILIPS Digital Interface Format) is connected to an external power amplifier;
  • Line Out Cable output
  • SPDIF SONY/PHILIPS Digital Interface Format
  • An external expansion device is also used to transmit an I2S mix signal to the external power amplifier through the Line Out interface or the SPDIF;
  • An external amplifier for playing the received I2S mix signal An external amplifier for playing the received I2S mix signal.
  • an external expansion device in a second aspect, includes:
  • the external expansion device is connected to the television device through the integrated physical interface, and receives power supply and signal transmission of the television device;
  • the mixing processing chip is configured to obtain an accompaniment audio signal transmitted by the television device through the integrated physical interface; and perform mixing processing on the user sound signal and the accompaniment audio signal collected by the microphone device;
  • the mixing processing chip is also used to transmit a mixed signal to a power amplifier circuit of the television device through an integrated physical interface.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • the external expansion device receives the accompaniment audio signal through the I2S interface and transmits the mixed signal through the I2S interface.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin;
  • the first pin is used to transmit the SCK signal
  • the second pin is used to transmit the WS signal
  • the third pin is used to transmit SD IN;
  • the fourth pin is used to transmit SD OUT
  • the fifth pin is used to transmit any of the MCLK signal, SD IN or SD OUT.
  • the external expansion device further includes a bridge chip
  • One end of the bridge chip is electrically connected to the USB2.0 sub-interface, and the other end of the bridge chip is electrically connected to the mixing processing chip;
  • a bridge chip for converting a USB accompaniment audio signal transmitted by a television device through a USB2.0 sub-interface into an I2S accompaniment audio signal; and transmitting an I2S accompaniment audio signal to the mixing processing chip;
  • a mixing processing chip for mixing a user sound signal and an I2S accompaniment audio signal; Transmitting an I2S mix signal to the bridge chip;
  • the bridge chip is also used to convert the I2S mix signal into a USB mix signal; the USB mix signal is transmitted to the AP of the television device through the USB2.0 sub-interface, and the AP is used to store the USB mix signal as a recording.
  • the external expansion device further includes a Line Out interface or an SPDIF;
  • the external expansion device transmits the I2S mix signal through the Line Out interface or the SPDIF external amplifier.
  • an audio playback method for an external expansion device, the method comprising:
  • the mixing signal is transmitted to the power amplifier circuit of the television device through the integrated physical interface, and the television device is used to play the mixed signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • Receiving accompaniment audio signals transmitted by the television device through an integrated physical interface with the television device including:
  • the mixing signal is transmitted to the power amplifier circuit of the television device through the integrated physical interface, including:
  • the mixing signal is transmitted to the power amplifier circuit of the television device through the I2S sub-interface.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin;
  • the first pin is used to transmit the SCK signal
  • the second pin is used to transmit the WS signal
  • the third pin is used to transmit SD IN;
  • the fourth pin is used to transmit SD OUT
  • the fifth pin is used to transmit any of the MCLK signal, SD IN or SD OUT.
  • the method further includes:
  • the mixing signal is transmitted to the AP of the television device through the I2S sub-interface in the integrated physical interface, and the AP is used to store the mixed signal as a recording.
  • the television device transmits the USB accompaniment audio signal through the USB2.0 sub-interface and calls UAC. number;
  • the method further includes:
  • the USB mix signal is transmitted to the AP of the television device through the USB2.0 sub-interface and the UAC is called, and the AP is used to store the USB mix signal as a recording.
  • the external expansion device is connected to the external power amplifier through the Line Out interface or the SPDIF;
  • the method further includes:
  • the I2S mix signal is transmitted through the Line Out interface or the SPDIF external amplifier, and the external amplifier is used to play the received I2S mix signal.
  • an audio playback method for a television device, the method comprising:
  • the accompaniment audio signal is transmitted to the external expansion device through an integrated physical interface with the external expansion device;
  • the mix signal received by the amplifier circuit is played through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • the accompaniment audio signal is transmitted to the external expansion device through an integrated physical interface with the external expansion device, including:
  • the accompaniment audio signal is transmitted to the external expansion device through the I2S sub-interface.
  • the I2S sub-interface has an open state and a closed state; in the closed state, the I2S sub-interface prohibits transmitting the I2S signal;
  • the method further includes:
  • the I2S sub-interface is set to an open state
  • the device ID indicates that the external device is not an external expansion device, set the I2S sub-interface to the off state.
  • the method further includes:
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the method further includes:
  • the USB mixing signal transmitted by the external expansion device is received through the USB2.0 sub-interface, and the USB mixing signal is obtained by the external expansion device converting the I2S mixed signal through the bridge chip, and the I2S mixing signal is the external expansion device to the user sound signal.
  • the audio signal is mixed with the I2S accompaniment audio signal, and the I2S accompaniment audio signal is obtained by the external expansion device converting the USB accompaniment audio signal through the bridge chip;
  • USB mix signal Store the USB mix signal as a recording.
  • an audio playback device comprising:
  • a first acquiring module configured to acquire a user sound signal collected by the microphone device
  • a first receiving module configured to receive an accompaniment audio signal transmitted by the television device through an integrated physical interface with the television device
  • a first processing module configured to perform a mixing process on the user sound signal and the accompaniment audio signal
  • the first transmission module is configured to transmit a mixing signal to the power amplifier circuit of the television device through the integrated physical interface, and the television device is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • a first receiving module configured to receive an accompaniment audio signal transmitted by the television device through the I2S sub-interface
  • the first transmission module is configured to transmit the mixing signal to the power amplifier circuit of the television device through the I2S sub-interface.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin;
  • the first pin is used to transmit the SCK signal
  • the second pin is used to transmit the WS signal
  • the third pin is used to transmit SD IN;
  • the fourth pin is used to transmit SD OUT
  • the fifth pin is used to transmit any of the MCLK signal, SD IN or SD OUT.
  • the device further includes:
  • the second transmission module is configured to transmit a mixing signal to the AP of the television device through the I2S sub-interface in the integrated physical interface, and the AP is configured to store the mixing signal as a recording.
  • the television device transmits the USB accompaniment audio signal through the USB2.0 sub-interface and invokes the UAC;
  • the device also includes:
  • a second receiving module configured to receive a USB accompaniment audio signal through a USB 2.0 sub-interface
  • a first conversion module configured to convert the USB accompaniment audio signal into an I2S accompaniment audio signal through a bridge chip
  • a second processing module configured to perform a mixing process on the user sound signal and the I2S accompaniment audio signal to generate an I2S mix signal
  • a second conversion module configured to convert the I2S mixed signal into a USB mixed signal through the bridge chip
  • the third transmission module is configured to transmit a USB mixing signal to the AP of the television device through the USB2.0 sub-interface and invoke the UAC, and the AP is configured to store the USB mixing signal as a recording.
  • the external expansion device is connected to the external power amplifier through the Line Out interface or the SPDIF;
  • the device also includes:
  • the fourth transmission module is configured to transmit the I2S mixing signal through the Line Out interface or the SPDIF external power amplifier, and the external power amplifier is used to play the received I2S mixing signal.
  • an audio playback device comprising:
  • a fifth transmission module configured to transmit an accompaniment audio signal to the external extension device through an integrated physical interface with the external expansion device
  • the third receiving module is configured to receive, by using the integrated physical interface, a mixing signal that is transmitted by the external expansion device to the power amplifier circuit of the television device, and the mixing signal is an external expansion device that mixes the user sound signal and the accompaniment audio signal collected by the microphone device. Generated after processing;
  • the play module is configured to play the mix signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • the fifth transmission module is configured to transmit the accompaniment audio signal to the external extension device through the I2S sub-interface number.
  • the I2S sub-interface has an open state and a closed state; in the closed state, the I2S sub-interface prohibits transmitting the I2S signal;
  • the device also includes:
  • the detecting module is configured to: when detecting the connection with the external device through the integrated physical interface, acquire the device identifier of the external device;
  • the first setting module is configured to set the I2S sub-interface to an open state if the device identifier indicates that the external device is an external expansion device;
  • the second setting module is configured to set the I2S sub-interface to the closed state if the device identifier indicates that the external device is not an external expansion device.
  • the device further includes:
  • a fourth receiving module configured to receive, by the AP, a sound mixing signal transmitted by the external expansion device
  • the first storage module is configured to store the mixed signal as a recording.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the device also includes:
  • a sixth transmission module configured to transmit a USB accompaniment audio signal to the external expansion device through the USB2.0 sub-interface and calling the UAC;
  • the fifth receiving module is configured to receive the USB mixing signal transmitted by the external expansion device through the USB2.0 sub-interface, and the USB mixing signal is obtained by converting the I2S mixing signal by the external expansion device through the bridge chip, and the I2S mixing signal is obtained.
  • the external expansion device obtains the sound processing of the user sound signal and the I2S accompaniment audio signal, and the I2S accompaniment audio signal is obtained by the external expansion device converting the USB accompaniment audio signal through the bridge chip;
  • the second storage module is configured to store the USB mix signal as a recording.
  • an audio playback device comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the mixing signal is transmitted to the power amplifier circuit of the television device through the integrated physical interface, and the television device is used to play the mixed signal received by the power amplifier circuit through the built-in speaker.
  • an audio playback device comprising:
  • a memory for storing processor executable instructions
  • processor is configured to:
  • the accompaniment audio signal is transmitted to the external expansion device through an integrated physical interface with the external expansion device;
  • the mix signal received by the amplifier circuit is played through the built-in speaker.
  • the user's sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device are mixed by the external expansion device to obtain a mixed signal, and the mixed signal is transmitted back to the television through an integrated physical interface with the television device.
  • the power amplifier circuit of the device plays the mixed signal by the built-in speaker of the television device; solves the problem that the built-in karaoke processing chip in the television has high cost and is not suitable for upgrading; and the karaoke function is integrated into the external connection.
  • the external expansion device is used to generate the mixing signal and return to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need to set the karaoke processing chip in the television device, thereby reducing the manufacturing cost. It is convenient for users to upgrade the karaoke function.
  • FIG. 1 is a system architecture diagram of an audio playback system provided by an exemplary embodiment
  • FIG. 2A is a schematic diagram of a signal transmission mode in the audio playback system shown in FIG. 1;
  • 2B is a schematic diagram of an integrated physical interface provided by an embodiment
  • FIG. 2C is a schematic diagram of another signal transmission mode in the audio playback system shown in FIG. 1;
  • FIG. 3 is a schematic structural diagram of an external expansion device and a television device according to an exemplary embodiment
  • FIG. 4 is a flow chart showing a method of an audio playing method provided by an exemplary embodiment
  • FIG. 5 is a flow chart showing a method of an audio playing method provided by another exemplary embodiment
  • 6A is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment
  • 6B is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment
  • 6C is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment
  • 6D is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment
  • 6E is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment
  • FIG. 7 is a schematic structural diagram of an audio processing device according to an exemplary embodiment
  • FIG. 8 is a schematic structural diagram of an audio processing device according to another exemplary embodiment.
  • FIG. 9 is a schematic structural diagram of an audio playback device according to still another exemplary embodiment.
  • FIG. 10 is a schematic structural diagram of an audio playback device according to still another exemplary embodiment.
  • FIG. 11 is a block diagram of a television device, shown in accordance with an illustrative embodiment.
  • FIG. 1 shows a system architecture diagram of an audio playback system provided by an exemplary embodiment.
  • the audio playback system includes a microphone device 110, an external expansion device 120, and a television device 130.
  • the microphone device 110 is configured to collect a user sound signal and transmit the user sound signal to the external extension device 120.
  • the microphone device 110 can be a microphone connected to the external expansion device 120 via a cable.
  • the microphone device 110 and the external expansion device 120 are connected by wire or wirelessly.
  • the external expansion device 120 is an electronic device having audio processing and transmission functions.
  • the external expansion device 120 includes an integrated physical interface, and is electrically connected to the television device 130 through the integrated physical interface, and receives power from the television device 130 and performs signal transmission with the television device 130.
  • the interface can be a USB 2.0 interface, a USB 3.0 interface, a Type C (C-type) interface, or a Lightning interface.
  • the external expansion device 120 can be implemented as a USB 3.0 device. USB device for the interface.
  • the television device 130 is an electronic device having an audio-video playback function, which may be a smart TV or a projector with a speaker or the like.
  • the television device 130 is configured to receive a mix signal transmitted by the external extension device 120 and play the mix signal through a built-in speaker, wherein the mix signal is generated according to the user sound signal and the accompaniment audio signal.
  • the television device 130 can also be implemented as a combination of a smart TV box + a television, and the external expansion device 120 and the smart TV box are connected through an integrated physical interface.
  • the audio playback system may further include an external power amplifier 140 connected to the external expansion device 120.
  • the external power amplifier 140 may be a speaker connected to the external expansion device 120 for receiving the mixing signal transmitted by the external expansion device 120 and playing the same.
  • the microphone device 110 is configured to transmit the collected user sound signal to the external expansion device 120.
  • the microphone device When performing karaoke, the microphone device is responsible for collecting the user's voice signal, and transmitting the collected user voice signal to the external extension device 120 in real time through a connection with the external expansion device.
  • the television device 130 is configured to transmit the accompaniment audio signal to the external extension device 120 through the integrated physical interface.
  • the television device supplies power to the external expansion device through the integrated physical interface, and transmits the accompaniment audio signal to the external expansion device through the integrated physical interface while the user sings, so that the external extension is extended.
  • the device is capable of mixing processing based on the user's voice signal and the accompaniment audio signal.
  • the external expansion device 120 is configured to perform a mixing process on the user sound signal and the accompaniment audio signal to generate a mixing signal; and transmit the mixing signal to the power amplifier circuit of the television device 130 through the integrated physical interface.
  • the external expansion device After receiving the user sound signal and the accompaniment audio signal, the external expansion device fuses the user sound signal and the accompaniment audio signal, and performs sound mixing processing on the fused sound signal to generate a corresponding sound mixing signal. After the mixing signal is generated, the external expansion device returns the mixing signal to the television device through the integrated physical interface, thereby playing through the built-in speaker of the television device. It should be noted that, in order to reduce the delay, the mixed signal transmitted through the integrated physical interface is directly transmitted to the work of the television device. The circuit is placed, not transmitted to the AP of the television device (there is a large delay in transmitting the mix signal to the power amplifier circuit via the AP).
  • the integrated physical interface between the external expansion device 120 and the television device 130 includes an I2S sub-interface (I2S sub-interface).
  • I2S sub-interface The interface is used for transmitting the I2S signal.
  • the television device transmits the accompaniment audio signal to the external expansion device through the I2S sub-interface.
  • the external expansion device 120 directly transmits the mixed signal to the power amplifier circuit of the television device through the I2S sub-interface.
  • the I2S sub-interface may be replaced by a PCM (Pulse Code Modulation) sub-interface, which is not limited in this embodiment.
  • PCM Pulse Code Modulation
  • the television device 130 is further configured to play the sound mixing signal received by the power amplifier circuit through the built-in speaker.
  • the television device receives the mixing signal transmitted by the external expansion device through the built-in power amplifier circuit, and plays the mixed signal using the built-in speaker. Since the mixing signal is directly transmitted to the power amplifier circuit instead of being transmitted to the power amplifier circuit via the television device AP, the delay between the user singing and the television device playing the mixing is small in the user experience, and the user experience is good.
  • the I2S signal transmitted through the I2S sub-interface includes not only data but also a corresponding clock signal. Therefore, in a possible implementation manner, the integrated physical interface between the external expansion device and the television device is a USB3.0 interface. That is, the external expansion device is configured with a USB 3.0 male connector, and the television device is configured with a USB 3.0 female connector.
  • the USB2.0 pin in the USB3.0 interface is used to form a USB2.0 sub-interface
  • the USB3.0 pin in the USB3.0 interface is used to form an I2S sub-interface.
  • the I2S sub-interface composed of the USB3.0 pin performs signal transmission (accompaniment audio signal and mixing signal).
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin, wherein the first pin is used to transmit the SCK signal, and the second tube is used.
  • the pin is used to transmit the WS signal, the third pin is used to transmit SD IN, the fourth pin is used to transmit SD OUT, and the fifth pin is used to transmit any one of MCLK signal, SD IN or SD OUT.
  • the SCK signal is used for synchronous data transmission to avoid receiving errors caused by clock out-synchronization when the receiving end receives the I2S signal;
  • the WS signal is used to indicate the left and right channels of the data in the I2S signal;
  • SD IN is the input data, and the SD IN includes the left and right Two channels of data;
  • SD OUT is output data, and SD OUT It also includes data for the left and right channels.
  • the fifth pin can be used to transmit the MCLK signal, SD IN or SD OUT.
  • the TV device can transmit the 4-channel audio accompaniment signal to the external expansion device via the I2S sub-interface.
  • the external expansion device can transmit a 4-channel mixing signal to the television device through the I2S sub-interface, and finally realize 4-channel playback.
  • the integrated physical interface is a USB3.0 interface, wherein the GND pin, D-pin, D+ pin, and VCC pin USB2.0 sub-interface in USB3.0, USB3.0
  • the SS_RX+ pin, SS_RX- pin, SS_TX+ pin, SS_TX- pin and GND_DRAIN pin form the I2S sub-interface and are used to transmit the SCK signal, WS signal, SD IN, SD OUT and MCLK signals, respectively.
  • the integrated physical interface (female) on the TV device can be connected not only to the external expansion device but also to other external devices.
  • the television device needs to transmit signals through the I2S sub-interface and the external expansion device; when the television device is connected to other external devices (such as a standard USB 3.0 device), the corresponding pipe of the I2S sub-interface The foot may not be used to transmit the I2S signal.
  • the I2S sub-interface in the integrated physical interface has an open state and a closed state, and when the television device is connected to the external expansion device, the I2S sub- The interface is in an open state, and the I2S sub-interface can transmit an I2S signal; when the television device is connected to an external expansion device, the I2S sub-interface is in a closed state, and the I2S sub-interface prohibits transmission of an I2S signal.
  • the television device 130 is configured to acquire the device identifier of the external device when the external device is connected through the integrated physical interface.
  • the television device When detecting that an external device is connected, the television device acquires the device identifier of the external device, and detects whether the device identifier is the same as the representation of the external expansion device.
  • the television device determines the device type of the external device according to the acquired device identifier, where the device type may include a standard USB 3.0 device, an external expansion device, and the like.
  • the television device 130 is further configured to set the I2S sub-interface to an open state if the device identifier indicates that the external device is the external expansion device 120.
  • the television device needs to perform signal transmission through the I2S sub-interface, that is, the I2S sub-interface is set to an open state.
  • the television device 130 is further configured to set the I2S sub-interface to a closed state if the device identifier indicates that the external device is not the external expansion device 120.
  • the pin corresponding to the I2S sub-interface is not used for signal transmission, that is, the I2S sub-interface is set to the off state (the pin corresponding to the I2S sub-interface is in a high-impedance state).
  • the television device can also switch different pin modes according to the type of the external device. For example, when the device identifier indicates that the external device is an external expansion device, the television device switches the integrated physical interface to the first pin mode. In the one-pin mode, the I2S sub-interface is enabled; when the device identifier indicates that the external device is a standard USB 3.0 device, the television device switches the integrated physical interface to the second pin mode, and in the second pin mode, the I2S sub-interface switches As a standard USB3.0 sub-interface, the integrated physical interface can be used as a standard USB interface for data transfer with standard USB devices.
  • the external expansion device 120 is further configured to transmit a mixing signal to the AP of the television device 130 by using an I2S sub-interface in the integrated physical interface, where the AP is configured to store the mixed signal as a recording.
  • the external expansion device can transmit the mixed signal to the AP of the television device through the I2S sub-interface while transmitting the mixed signal to the power amplifier circuit of the television device.
  • the AP of the television device stores it as a recording, and when the user instructs playback, the television device plays the recording.
  • the external expansion device can also transmit the user voice signal collected by the microphone device to the AP of the television device, so that the user can play back the sound without the accompaniment, which is not limited by the embodiment of the present disclosure.
  • the TV device and the external expansion device can not only transmit signals through the I2S sub-interface, but also transmit signals through the USB2.0 sub-interface in the USB3.0 interface, and with external connection.
  • the amplifier plays audio.
  • the television device is further configured to transmit a USB accompaniment audio signal through a USB2.0 sub-interface and invoke a UAC (USB Audio Class) external expansion device.
  • UAC USB Audio Class
  • the TV device When the TV device supports UAC and detects that the external expansion device is connected to it, the TV device can transmit the USB accompaniment audio signal to the external expansion device through the USB2.0 sub-interface.
  • An external expansion device is also used to convert a USB accompaniment audio signal into an I2S accompaniment audio signal through a bridge chip; a user sound signal and an I2S accompaniment audio signal are mixed; through the bridge core
  • the chip converts the I2S mixing signal into a USB mixing signal; transmits a USB mixing signal to the AP of the television device through the USB2.0 sub-interface and calls the UAC, and the AP is used to store the USB mixing signal as a recording.
  • the external expansion device receives the USB audio accompaniment signal transmitted by the television device through the USB2.0 sub-interface in the integrated physical interface.
  • the external expansion device converts the USB accompaniment audio signal into an I2S accompaniment audio signal through a built-in bridge chip, wherein the bridge chip is used to convert the I2S signal and the USB audio signal.
  • the external expansion device mixes the user sound signal transmitted by the microphone device and the converted I2S accompaniment audio signal to achieve the corresponding I2S mixing signal.
  • the I2S mixing signal needs to be converted into a USB mixing signal by the bridge chip again, and the AP is connected to the TV device through the USB2.0 sub-interface.
  • the USB mix signal is returned.
  • the AP of the TV device processes the received USB mix signal and transmits it to the built-in speaker for playback through the power amplifier circuit, a large delay (greater than 30ms) will occur, resulting in a significant lag in the audio played by the built-in speaker. The user experience is affected. Therefore, after receiving the returned USB mix signal, the AP of the television device stores the USB mix signal as a recording for subsequent playback.
  • the integrated physical interface is a USB 2.0 interface
  • the external expansion device and the television device can also implement signal transmission by using the foregoing method.
  • This embodiment only uses the integrated physical interface as the USB3.0 interface as an example for illustration. It is not intended to limit the disclosure.
  • An external expansion device is also used to transmit an I2S mix signal to the external power amplifier through the Line Out interface or the SPDIF;
  • An external amplifier for playing the received I2S mix signal An external amplifier for playing the received I2S mix signal.
  • the external expansion device is also provided with a Line Out interface or SPDIF.
  • the external expansion device can transmit the I2S mixing signal through the Line Out interface or the SPDIF external power amplifier, so that the external power amplifier can perform audio playback; meanwhile, since the I2S mixing signal does not need to pass the AP, the user sings and the external power amplifier play.
  • the delay between audio is small and the user experience is good.
  • FIG. 3 it shows a schematic structural diagram of an external expansion device 310 and a television device 320 provided by an exemplary embodiment.
  • the external expansion device 310 includes a mixing processing chip 311 and a mixing processing chip 311.
  • An electrically connected integrated physical interface 312 male
  • the television device 320 includes an integrated physical interface 321 (female), a power amplifier circuit 322, and a speaker 323.
  • the external expansion device 310 is coupled to the integrated physical interface 321 of the television device 320 via the integrated physical interface 312 and receives power and signal transmissions from the television device 320.
  • the integrated physical interface can be a USB 2.0 interface, a USB 3.0 interface, a Type C interface or a Lightning interface, and the like.
  • the mixing processing chip 311 is configured to acquire an accompaniment audio signal transmitted by the television device 320 through the integrated physical interface 321; and perform a mixing process on the user sound signal and the accompaniment audio signal collected by the microphone device.
  • the external expansion device 310 receives the user sound signal collected by the microphone device by wire or wirelessly.
  • the external expansion device 310 further includes an audio input interface, and receives a user sound signal transmitted by the microphone device through the audio input interface.
  • the television device 320 transmits the accompaniment audio signal to the external extension device 310 through the integrated physical interface 321 with the external expansion device 310.
  • the external extension device 310 After receiving the accompaniment audio signal, the external extension device 310 passes the mixing processing chip 311. Mixing the accompaniment audio signal and the user sound signal.
  • the mixing processing chip 311 is further configured to transmit a mixing signal to the power amplifier circuit of the television device through the integrated physical interface.
  • the mixing processing chip 311 transmits the processed mixing signal to the power amplifier circuit 322 inside the television device 320 through the integrated physical interface 312, and the television device 320 passes through the built-in speaker 323.
  • the sound mixing signal received by the power amplifier circuit 322 is played.
  • the integrated physical interface 312 of the external expansion device 310 is a USB 3.0 interface (male).
  • the integrated physical interface 321 of the television device 320 can also be a USB 3.0 interface (female). .
  • the USB2.0 pin in the USB3.0 interface is used to form the USB2.0 sub-interface 3122
  • the USB3.0 pin in the USB3.0 interface is used to form the I2S sub-interface 3121
  • the external expansion device 310 passes the I2S sub-
  • the interface 3121 receives the accompaniment audio signal transmitted by the television device 320 and transmits the mix signal to the television device 320 via the I2S sub-interface 3121.
  • the GND pin, D-pin, D+ pin, and VCC in USB3.0 Pin USB2.0 sub-interface, SS_RX+ pin, SS_RX- pin, SS_TX+ pin, SS_TX- pin and GND_DRAIN pin in USB3.0 constitute I2S sub-interface, and are used to transmit SCK signal, WS signal, SD IN, SD OUT and MCLK signals.
  • the television device 320 When the television device 320 supports the UAC, the television device 320 can not only transmit signals through the I2S sub-interface and the external expansion device 310, but also perform signal transmission through the USB2.0 sub-interface.
  • the external expansion device 320 further includes a bridge chip 313.
  • One end of the bridge chip 313 is electrically connected to the USB2.0 sub-interface 3122, and the other end of the bridge chip 313 is electrically connected to the mixing processing chip 311.
  • the bridge chip 313 is configured to convert the USB accompaniment audio signal transmitted by the television device 320 through the USB2.0 sub-interface 3122 into an I2S accompaniment audio signal; and transmit the I2S accompaniment audio signal to the mixing processing chip 311.
  • the bridge chip 311 is used to convert a USB signal into an I2S signal, or to convert an I2S signal into a USB signal. After receiving the USB accompaniment audio signal transmitted by the television device 320 through the USB2.0 sub-interface 3122, the bridge chip 313 converts the USB accompaniment audio signal into an I2S accompaniment audio signal, and transmits the converted I2S accompaniment audio signal to the mixing processing. Chip 311.
  • the mixing processing chip 311 is configured to perform mixing processing on the user sound signal and the I2S accompaniment audio signal.
  • the mixing processing chip 311 performs a mixing process on the user sound signal and the I2S accompaniment audio signal to obtain a corresponding mixing signal.
  • the external extension device 310 uses the USB2.0 sub-interface 3122 to perform the mixed signal backhaul, the mixed signal needs to pass through the AP 324 of the television device 320, and the AP 324 processes the mixed signal and then It is sent to the power amplifier circuit 322. In this way, the backhaul will greatly increase the delay and affect the user experience.
  • the external expansion device 310 further includes a Line Out interface or an SPDIF 314.
  • the I2S mixing signal is transmitted to the external power amplifier through the Line Out interface or the SPDIF314; the external power amplifier receives the I2S mixing signal and plays the same, which can significantly reduce the user singing and mixing. The delay between plays.
  • the mixing processing chip 311 is further configured to transmit the I2S mixing signal to the bridge chip 313;
  • the bridge chip 313 is further configured to convert the I2S mix signal into a USB mix signal; transmit a USB mix signal to the AP324 of the television device 320 through the USB2.0 sub-interface 3122, and the AP is used to mix the USB
  • the tone signal is stored as a recording.
  • the mixing processing chip 311 can only return the user sound signal collected by the microphone device to the bridge chip 313, which is not limited in this embodiment.
  • the mixing processing chip 311 can transmit the I2S mixing signal to the bridge chip 313 while transmitting the I2S mixing signal to the external power amplifier through the Line Out interface or the SPDIF 314.
  • the bridge chip 313 converts the I2S mix signal into a USB mix signal and transmits the USB mix signal to the AP 324 of the television device 320 via the USB 2.0 sub-interface 3122.
  • the AP 324 stores it as a recording. When the user performs a playback operation, the AP 324 can send the stored recording to the power amplifier circuit 322 and play it through the built-in speaker 323.
  • the bridge chip and the mixing processing chip may be independently provided chips, or the bridge chip may be a chip integrated in the mixing processing chip, which is not limited in the embodiment of the present disclosure.
  • the audio playback method includes:
  • step 401 a user sound signal collected by the microphone device is acquired.
  • step 402 an accompaniment audio signal transmitted by the television device is received through an integrated physical interface with the television device.
  • step 403 the user sound signal and the accompaniment audio signal are subjected to a mixing process.
  • step 404 the mixing signal is transmitted to the power amplifier circuit of the television device through the integrated physical interface, and the television device is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the audio playing method performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through the external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device, the external expansion device is used to generate the mixing signal and transmitted back to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need for
  • the karaoke processing chip is set in the television device, which reduces the manufacturing cost and facilitates the user's karaoke function. Upgrade.
  • FIG. 5 is a flow chart showing a method of an audio playing method provided by another exemplary embodiment. This embodiment is described by taking the audio playing method applied to the television device 130 in FIG. 1 as an example.
  • the audio playback method includes:
  • step 501 the accompaniment audio signal is transmitted to the external extension device through an integrated physical interface with the external expansion device.
  • step 502 the sound signal transmitted by the external expansion device to the power amplifier circuit of the television device is received through the integrated physical interface, and the sound mixing signal is generated by the external expansion device mixing the user sound signal and the accompaniment audio signal collected by the microphone device. of.
  • step 503 the mixing signal received by the power amplifier circuit is played through the built-in speaker.
  • the audio playing method performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through the external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device, the external expansion device is used to generate the mixing signal and transmitted back to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need for
  • the karaoke processing chip is set in the television device, which reduces the manufacturing cost and facilitates the user to upgrade the karaoke function.
  • FIG. 6A is a flow chart showing a method of an audio playing method provided by still another exemplary embodiment. This embodiment is described by taking the audio playing method applied to the audio playing system shown in FIG. 1 as an example.
  • the audio playback method includes:
  • step 601 the external extension device acquires a user sound signal collected by the microphone device.
  • the external expansion device acquires a user sound signal collected by the microphone device through a cable between the microphone device; and when the microphone device is a wireless device of the wireless microphone, the external expansion device That is, the user's voice signal is obtained wirelessly.
  • This embodiment does not limit the manner in which the external extension device acquires the user's voice signal.
  • step 602 the television device transmits the accompaniment audio signal to the external extension device via an integrated physical interface with the external expansion device.
  • the integrated physical interface includes an I2S sub-interface for transmitting an I2S signal, and the television device transmits the accompaniment audio signal to the external expansion device through the I2S sub-interface in the integrated physical interface.
  • step 603 the external expansion device receives the accompaniment audio signal transmitted by the television device through the integrated physical interface.
  • the external expansion device receives the accompaniment audio signal through the I2S sub-interface in the integrated physical interface.
  • step 604 the external expansion device performs a mixing process on the user sound signal and the accompaniment audio signal.
  • the external processing device Since the external processing device has a mixing processing chip built in, the user's sound signal and the accompaniment audio signal are received, and the external expansion device performs mixing processing on the two, and finally obtains a corresponding mixing signal.
  • step 605 the external expansion device transmits the mixing signal to the power amplifier circuit of the television device through the integrated physical interface.
  • the external expansion device directly transmits the mixed signal to the power amplifier circuit of the television device through the I2S sub-interface.
  • step 606 the television device receives the mixing signal transmitted by the external expansion device to the power amplifier circuit of the television device through the integrated physical interface.
  • the television device receives the mixing signal transmitted by the external expansion device to the power amplifier circuit through the I2S sub-interface.
  • step 607 the television device plays the mix signal received by the power amplifier circuit through the built-in speaker.
  • the transmission delay is low, that is, the time interval between the user singing and the mixing playback is shorter (less than 30 ms), thereby achieving better User experience.
  • the audio playing method performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through the external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device is achieved, and the external expansion device is used to generate the mixed signal and transmit back to
  • the television equipment finally plays the mixing signal by means of the built-in speaker of the television device, thereby eliminating the need to set the karaoke processing chip in the television device, reducing the manufacturing cost and facilitating the user to upgrade the karaoke function.
  • the external expansion device directly transmits the mixed sound signal of the mixing process to the power amplifier circuit of the television device through the I2S sub-interface between the television device, and is played by the built-in speaker of the television device, thereby avoiding the passage of the television.
  • the AP of the device performs the backhaul signal for backhaul, which reduces the backhaul delay and improves the user experience.
  • the integrated physical interface (female) on the TV device can be connected not only to the external expansion device but also to other external devices.
  • the television device needs to transmit signals through the I2S sub-interface and the external expansion device; when the television device is connected to other external devices (such as a standard USB 3.0 device), the corresponding pipe of the I2S sub-interface The foot may not be used to transmit the I2S signal.
  • the I2S sub-interface in the integrated physical interface has an open state and a closed state, and when the television device is connected to the external expansion device, the I2S sub- The interface is in an open state, and the I2S sub-interface can transmit an I2S signal; when the television device is connected to an external expansion device, the I2S sub-interface is in a closed state, and the I2S sub-interface prohibits transmission of an I2S signal.
  • FIG. 6B before the foregoing step 602, the following steps may also be included.
  • step 608 the television device detects the device identifier of the external device when it is connected to the external device through the integrated physical interface.
  • the television device can determine whether the external device is an external expansion device with karaoke function according to the device identification of the external device.
  • the device detects whether the device identifier includes a predetermined keyword (such as Cara OK).
  • a predetermined keyword such as Cara OK.
  • step 609 if the device identifier indicates that the external device is an external expansion device, the television device sets the I2S sub-interface to an open state.
  • the television device When detecting that the external device is an external expansion device, the television device sets the I2S sub-interface in the integrated physical interface to an open state, and performs accompaniment audio signal transmission through the I2S sub-interface, and performs steps. 602.
  • step 610 if the device identifier indicates that the external device is not an external expansion device, the television device sets the I2S sub-interface to the off state.
  • the television device can set the pin of the I2S sub-interface to a high-impedance state, so that the I2S sub-interface is in a closed state, and the I2S signal transmission is stopped.
  • the television device can also switch the I2S sub-interface according to the device type of the external device. For example, when the external device is a standard USB 3.0 device, the television device can switch the I2S sub-interface to a standard USB 3.0 sub-interface to ensure data transmission between the standard USB 3.0 device and the television device, which is not limited by the disclosure. .
  • the television device determines whether the external device is an external expansion device according to the device identifier of the external device, and sets the I2S to a closed state when the external device is not an external expansion device, thereby avoiding signal transmission errors and integrated physical interface damage. .
  • step 611 the external expansion device transmits the mixing signal to the AP of the television device through the I2S sub-interface in the integrated physical interface.
  • the mixing signal can be transmitted to the AP of the television device through the I2S sub-interface.
  • the external extension device may also only transmit the user voice signal to the television device AP, which is not limited in this embodiment.
  • step 612 the television device receives the mix signal transmitted by the external extension device through the AP.
  • step 613 the television device stores the mix signal as a recording.
  • the television device After receiving the mixing signal, the television device stores the mixing signal as a recording for playback; at the same time, the AP of the television device can also score according to the pitch and rhythm of the recording, and display the score, the disclosure is not correct. This is limited.
  • the television device can also transmit the accompaniment audio signal to the external expansion device through the USB2.0 sub-interface in the integrated physical interface, and the external expansion device can also play the processed mixed signal by using the external power amplifier.
  • the integrated physical interface between the television device and the external expansion device includes a USB sub-interface, after step 601, Including the following steps.
  • step 614 the television device transmits the USB accompaniment audio signal via the USB 2.0 sub-interface and calls the UAC.
  • the TV device When the TV device supports UAC, the TV device can transmit the USB audio signal to the external expansion device through the USB2.0 sub-interface.
  • step 615 the external expansion device receives the USB accompaniment audio signal through the USB 2.0 sub-interface.
  • the external expansion device receives the USB accompaniment audio signal transmitted by the television device through the USB2.0 sub-interface.
  • step 616 the external expansion device converts the USB accompaniment audio signal into an I2S accompaniment audio signal through the bridge chip.
  • the USB2.0 sub-interface 3122 of the external expansion device 310 is electrically connected to the bridge chip 313.
  • the external expansion device converts the USB accompaniment audio signal into I2S accompaniment audio signal. This embodiment does not limit the type of the bridge chip.
  • step 617 the external expansion device performs a mixing process on the user sound signal and the I2S accompaniment audio signal to generate an I2S mix signal.
  • the external expansion device performs a mixing process on the converted I2S accompaniment audio signal and the user sound signal to generate a corresponding I2S mixing signal.
  • the external expansion device transmits the I2S mix signal through the Line Out interface or the SPDIF to the external power amplifier.
  • the external expansion device 310 transmits the I2S mixing signal to the external power amplifier through the Line Out/SPDIF 314, so that the external power amplifier can play the mixed audio.
  • step 619 the external power amplifier plays the I2S mix signal.
  • the television device transmits the USB accompaniment audio signal to the external extension device through the USB2.0 sub-interface, and the external expansion device generates the I2S mixing signal according to the USB accompaniment audio signal and the user sound signal, and plays the external power amplifier to expand
  • the scope of application of the external expansion device reduces the delay between the user's singing and mixing playback, and improves the user experience.
  • step 618 the external expansion device converts the I2S mix signal into a USB mix signal through the bridge chip.
  • the external expansion device 320 converts the I2S mixed signal into a USB mixed signal through the bridge chip 313 while transmitting the I2S mixed signal to the external power amplifier through the Line Out/SPDIF 314.
  • the external extension device can also only transmit the user voice signal to the TV device AP, which is not limited in this embodiment.
  • step 619 the external expansion device transmits a USB mix signal to the AP of the television device via the USB 2.0 sub-interface and invokes the UAC.
  • the external expansion device transmits the converted USB mix signal to the AP of the television device through the USB2.0 sub-interface and calls the UAC.
  • step 620 the television device stores the USB mix signal as a recording.
  • the television device stores the received USB mix signal as a recording for playback; at the same time, the AP of the television device can also score according to the pitch and rhythm of the recording, and display the score, which is not limited by the disclosure.
  • FIG. 7 is a schematic structural diagram of an audio processing device according to an exemplary embodiment.
  • the audio processing device may be implemented as a whole or a part of the external expansion device 120 in FIG. 1 by using a dedicated hardware circuit, or a combination of hardware and software.
  • the audio processing device includes:
  • the first obtaining module 701 is configured to acquire a user sound signal collected by the microphone device;
  • the first receiving module 702 is configured to receive an accompaniment audio signal transmitted by the television device through an integrated physical interface with the television device;
  • the first processing module 703 is configured to perform a mixing process on the user sound signal and the accompaniment audio signal;
  • the first transmission module 704 is configured to transmit a mixing signal to the power amplifier circuit of the television device through the integrated physical interface, and the television device is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the audio processing device performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through an external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device;
  • the built-in karaoke processing chip in the machine has high cost and is not conducive to the upgrade problem; the karaoke function is integrated into the external expansion device, and the external expansion device is used to generate the mixed signal and return to the television device, and finally
  • the built-in speaker of the television device plays the mixed signal, so that the karaoke processing chip does not need to be set in the television device, the manufacturing cost is reduced, and the user can upgrade the karaoke function.
  • FIG. 8 is a block diagram showing the structure of an audio processing device provided by another exemplary embodiment.
  • the audio processing device may be implemented as a whole or a part of the external expansion device 120 in FIG. 1 by using a dedicated hardware circuit, or a combination of hardware and software.
  • the audio processing device includes:
  • the first obtaining module 801 is configured to acquire a user sound signal collected by the microphone device;
  • the first receiving module 802 is configured to receive an accompaniment audio signal transmitted by the television device through an integrated physical interface with the television device;
  • the first processing module 803 is configured to perform a mixing process on the user sound signal and the accompaniment audio signal;
  • the first transmission module 804 is configured to transmit a mixing signal to the power amplifier circuit of the television device through the integrated physical interface, and the television device is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • the first receiving module 802 is configured to receive an accompaniment audio signal transmitted by the television device through the I2S sub-interface;
  • the first transmission module 804 is configured to transmit a mixing signal to the power amplifier circuit of the television device through the I2S sub-interface.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the USB3.0 pin includes a first pin, a second pin, a third pin, a fourth pin, and a fifth pin;
  • the first pin is used to transmit the SCK signal
  • the second pin is used to transmit the WS signal
  • the third pin is used to transmit SD IN;
  • the fourth pin is used to transmit SD OUT
  • the fifth pin is used to transmit any of the MCLK signal, SD IN or SD OUT.
  • the device further includes:
  • the second transmission module 805 is configured to transmit a mixing signal to the AP of the television device through the I2S sub-interface in the integrated physical interface, and the AP is configured to store the mixing signal as a recording.
  • the television device transmits the USB accompaniment audio signal through the USB2.0 sub-interface and invokes the UAC;
  • the device also includes:
  • the second receiving module 806 is configured to receive the USB accompaniment audio signal through the USB2.0 sub-interface
  • the first conversion module 807 is configured to convert the USB accompaniment audio signal into an I2S accompaniment audio signal by using a bridge chip
  • the second processing module 808 is configured to perform a mixing process on the user sound signal and the I2S accompaniment audio signal to generate an I2S mix signal;
  • the second conversion module 809 is configured to convert the I2S mixed signal into a USB mixed signal by using a bridge chip
  • the third transmission module 810 is configured to transmit a USB mixing signal to the AP of the television device through the USB2.0 sub-interface and invoke the UAC, and the AP is configured to store the USB mixing signal as a recording.
  • the external expansion device is connected to the external power amplifier through the Line Out interface or the SPDIF;
  • the device also includes:
  • the fourth transmission module 811 is configured to transmit an I2S mixing signal to the external power amplifier through the Line Out interface or the SPDIF, and the external power amplifier is used to play the received I2S mixing signal.
  • the audio processing device performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through an external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device, the external expansion device is used to generate the mixing signal and transmitted back to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need for
  • the karaoke processing chip is set in the television device, which reduces the manufacturing cost and facilitates the user to upgrade the karaoke function.
  • the external expansion device directly transmits the mixed sound signal of the mixing process to the power amplifier circuit of the television device through the I2S sub-interface between the television device, and is played by the built-in speaker of the television device, thereby avoiding the passage of the television.
  • the AP of the device performs the backhaul signal for backhaul, which reduces the backhaul delay and improves the user experience.
  • the television device determines whether the external device is an external expansion device according to the device identifier of the external device, and sets the I2S to a closed state when the external device is not an external expansion device, thereby avoiding signal transmission errors and integrated physical interface damage. .
  • the television device transmits the USB accompaniment audio signal to the external extension device through the USB2.0 sub-interface, and the external expansion device generates the I2S mixing signal according to the USB accompaniment audio signal and the user sound signal, and plays the external power amplifier to expand
  • the scope of application of the external expansion device reduces the delay between the user's singing and mixing playback, and improves the user experience.
  • FIG. 9 is a schematic structural diagram of an audio playback device according to still another exemplary embodiment.
  • the audio playback device can be implemented as a whole or a part of the television device 130 in FIG. 1 by a dedicated hardware circuit or a combination of hardware and software.
  • the audio playback device includes:
  • the fifth transmission module 901 is configured to transmit the accompaniment audio signal to the external extension device through an integrated physical interface between the external expansion device;
  • the third receiving module 902 is configured to receive, by using the integrated physical interface, a mixing signal that is transmitted by the external expansion device to the power amplifier circuit of the television device, and the mixing signal is an external expansion device that mixes the user sound signal and the accompaniment audio signal collected by the microphone device. Generated after the sound is processed;
  • the playing module 903 is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the audio playback device performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through an external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device, the external expansion device is used to generate the mixing signal and transmitted back to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need for
  • the karaoke processing chip is set in the television device, which reduces the manufacturing cost and facilitates the user to upgrade the karaoke function.
  • FIG. 10 is a schematic structural diagram of an audio playback device provided by still another exemplary embodiment.
  • the audio playback device can be implemented as a whole or a part of the television device 130 in FIG. 1 by a dedicated hardware circuit or a combination of hardware and software.
  • the audio playback device includes:
  • the fifth transmission module 1001 is configured to communicate with an external physical interface between the external expansion device The external expansion device transmits the accompaniment audio signal;
  • the third receiving module 1002 is configured to receive, by using the integrated physical interface, a mixing signal that is transmitted by the external expansion device to the power amplifier circuit of the television device, and the mixing signal is an external expansion device that mixes the user sound signal and the accompaniment audio signal collected by the microphone device. Generated after the sound is processed;
  • the playing module 1003 is configured to play the mixing signal received by the power amplifier circuit through the built-in speaker.
  • the integrated physical interface includes an I2S sub-interface, and the I2S sub-interface is used to transmit the I2S signal;
  • the fifth transmission module 1001 is configured to transmit the accompaniment audio signal to the external extension device through the I2S sub-interface.
  • the I2S sub-interface has an open state and a closed state; in the closed state, the I2S sub-interface prohibits transmitting the I2S signal;
  • the device also includes:
  • the detecting module 1004 is configured to: when detecting the connection with the external device through the integrated physical interface, acquire the device identifier of the external device;
  • the first setting module 1005 is configured to set the I2S sub-interface to an open state if the device identifier indicates that the external device is an external expansion device;
  • the second setting module 1006 is configured to set the I2S sub-interface to the closed state if the device identifier indicates that the external device is not an external expansion device.
  • the device further includes:
  • the fourth receiving module 1007 is configured to receive, by the AP, a sound mixing signal transmitted by the external expansion device;
  • the first storage module 1008 is configured to store the mix signal as a recording.
  • the integrated physical interface is a USB 3.0 interface
  • the USB 2.0 pin in the USB 3.0 interface is used to form a USB 2.0 sub-interface
  • the USB 3.0 pin in the USB 3.0 interface is used to form an I2S sub-interface.
  • the device also includes:
  • the sixth transmission module 1009 is configured to transmit a USB accompaniment audio signal to the external expansion device through the USB2.0 sub-interface and invoke the UAC;
  • the fifth receiving module 1010 is configured to receive the USB mixing signal transmitted by the external expansion device through the USB2.0 sub-interface, and the USB mixing signal is obtained by converting the I2S mixing signal by the external expansion device through the bridge chip, and the I2S mixing The signal is obtained by the external expansion device mixing the user sound signal and the I2S accompaniment audio signal, and the I2S accompaniment audio signal is obtained by the external expansion device converting the USB accompaniment audio signal through the bridge chip;
  • the second storage module 1011 is configured to store the USB mix signal as a recording.
  • the audio playback device performs mixing processing on the user sound signal collected by the microphone device and the accompaniment audio signal transmitted by the television device through an external expansion device to obtain a mixed signal, and passes through the television device.
  • the integrated physical interface transfers the mixed signal back to the power amplifier circuit of the television device, and the mixed signal is played by the built-in speaker of the television device; the cost of the built-in karaoke processing chip in the television is high, and Conducive to the upgrade problem; the integration of the karaoke function into the external expansion device, the external expansion device is used to generate the mixing signal and transmitted back to the television device, and finally the sound mixing signal is played by the built-in speaker of the television device, thereby eliminating the need for
  • the karaoke processing chip is set in the television device, which reduces the manufacturing cost and facilitates the user to upgrade the karaoke function.
  • the external expansion device directly transmits the mixed sound signal of the mixing process to the power amplifier circuit of the television device through the I2S sub-interface between the television device, and is played by the built-in speaker of the television device, thereby avoiding the passage of the television.
  • the AP of the device performs the backhaul signal for backhaul, which reduces the backhaul delay and improves the user experience.
  • the television device determines whether the external device is an external expansion device according to the device identifier of the external device, and sets the I2S to a closed state when the external device is not an external expansion device, thereby avoiding signal transmission errors and integrated physical interface damage. .
  • the television device transmits the USB accompaniment audio signal to the external extension device through the USB2.0 sub-interface, and the external expansion device generates the I2S mixing signal according to the USB accompaniment audio signal and the user sound signal, and plays the external power amplifier to expand
  • the scope of application of the external expansion device reduces the delay between the user's singing and mixing playback, and improves the user experience.
  • television device 1100 can be a smart television.
  • television device 1100 can include one or more of the following components: processing component 1102, memory 1104, power component 1106, multimedia component 1108, audio component 1110, and input/output (I/O) interface 1112.
  • processing component 1102 memory 1104, power component 1106, multimedia component 1108, audio component 1110, and input/output (I/O) interface 1112.
  • Processing component 1102 typically controls the overall operation of television device 1100.
  • Processing component 1102 can One or more processors 1118 are included to execute the instructions to perform all or part of the steps of the above method.
  • processing component 1102 can include one or more modules to facilitate interaction between component 102 and other components.
  • the processing component 1102 can include a multimedia module to facilitate interaction between the multimedia component 1108 and the processing component 1102.
  • the processing component 110 is an application processor AP.
  • Memory 1104 is configured to store various types of data to support operation at television device 1100. Examples of such data include instructions for any application or method operating on television device 1100.
  • the memory 1104 can be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable. Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read only memory
  • EPROM Electrically erasable programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Disk Disk or Optical Disk.
  • Power component 1106 provides power to various components of television device 1100.
  • Power component 1106 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for television device 1100.
  • the multimedia component 1108 includes a screen between the television device 1100 and the user that provides an output interface.
  • the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touches, slides, and gestures on the touch panel. The touch sensor can sense not only the boundaries of the touch or sliding action, but also the duration and pressure associated with the touch or slide operation.
  • the multimedia component 1108 includes a front camera and/or a rear camera. When the television device 1100 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1110 is configured to output and/or input an audio signal.
  • the audio component 1110 includes a built-in speaker for outputting a mix signal.
  • the I/O interface 1112 provides an interface between the processing component 1102 and the peripheral interface module.
  • the I/O interface may be a USB 2.0 interface, a USB 3.0 interface, a Type C interface, or a Lightning interface.
  • television device 1100 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable A logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic component implementation for performing the above information receiving method.
  • ASICs application specific integrated circuits
  • DSPs digital signal processors
  • DSPDs digital signal processing devices
  • PLD programmable A logic device
  • FPGA field programmable gate array
  • controller a microcontroller, a microprocessor, or other electronic component implementation for performing the above information receiving method.
  • non-transitory computer readable storage medium comprising instructions, such as a memory 1104 comprising instructions executable by the processor 1118 of the television device 1100 to perform the audio playback method described above.
  • the non-transitory computer readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, and an optical data storage device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Acoustics & Sound (AREA)
  • Theoretical Computer Science (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Reverberation, Karaoke And Other Acoustics (AREA)
  • Information Transfer Systems (AREA)

Abstract

一种音频播放系统、外接扩展设备、音频播放方法及装置，涉及音频处理领域，所述音频播放方法包括：获取麦克风设备采集的用户声音信号（401）；通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号（402）；对用户声音信号和伴奏音频信号进行混音处理（403）；通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号（404）。解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用外接扩展设备生成混音信号并回传至电视设备，由电视设备内置扬声器对混音信号进行播放，降低了制造成本，方便对卡拉OK功能进行升级。

Description

音频播放系统、外接扩展设备、音频播放方法及装置 技术领域
本公开涉及音频处理领域，特别涉及一种音频播放系统、外接扩展设备、音频播放方法及装置。
背景技术
卡拉OK(英文：Karaoke是一种深受用户喜爱的娱乐休闲方式。为了使用户在家中就能够体验卡拉OK，越来越多的电视机开始支持卡拉OK功能。
用户使用电视机的卡拉OK功能进行唱歌时，电视机中内置的卡拉OK处理芯片通过与电视机相连的麦克风获取用户声音信号，将该用户声音信号与伴奏音频信号进行融合，并对融合后的音频信号进行混音处理，最终借助电视机的功放播放处理后的混音信号，从而达到专业的卡拉OK效果。但是在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级。
发明内容
本公开提供了一种音频播放系统、外接扩展设备、音频播放方法及装置。所述技术方案如下：
第一方面，提供了一种音频播放系统，该系统包括：麦克风设备、外接扩展设备和电视设备，麦克风设备与外接扩展设备相连，且外接扩展设备和电视设备之间通过一个集成物理接口相连，电视设备通过集成物理接口为外接扩展设备供电并进行信号传输；
麦克风设备，用于向外接扩展设备传输采集到的用户声音信号；
电视设备，用于通过集成物理接口向外接扩展设备传输伴奏音频信号；
外接扩展设备，用于对用户声音信号和伴奏音频信号进行混音处理生成混音信号；通过集成物理接口向电视设备的功放电路传输混音信号；
电视设备，还用于通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S(Inter-IC Sound，集成电路内置音频)子接口，I2S子接口用于传输I2S信号；
电视设备，用于通过I2S子接口向外接扩展设备传输伴奏音频信号；
外接扩展设备，用于通过I2S子接口向功放电路传输混音信号。
可选的，集成物理接口是USB3.0(Universal Serial Bus3.0，通用串行总线3.0)接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
第一管脚用于传输SCK(continuous Serial Clock，串行时钟)信号；
第二管脚用于传输WS(Word Select，字选择)信号；
第三管脚用于传输SD IN(Serial Data IN，串行数据输入)信号；
第四管脚用于传输SD OUT(Serial Data OUT，串行数据输出)信号；
第五管脚用于传输MCLK(Master Clock，主时钟)信号、SD IN或SD OUT中任一信号。
可选的，I2S子接口具有打开状态和关闭状态；处于关闭状态下，I2S子接口禁止传输I2S信号；
电视设备，用于检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识；
电视设备，还用于若设备标识指示外部设备是外接扩展设备，则将I2S子接口设置为打开状态；
电视设备，还用于若设备标识指示外部设备不是外接扩展设备，则将I2S子接口设置为关闭状态。
可选的，外接扩展设备，还用于通过集成物理接口中的I2S子接口向电视设备的AP(Application Processor，应用处理器)传输混音信号，AP用于将混音信号存储为录音。
可选的，电视设备，还用于通过USB2.0子接口并调用UAC(USB Audio Class，USB音频类)向外接扩展设备传输USB伴奏音频信号；
外接扩展设备，还用于通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号；对用户声音信号和I2S伴奏音频信号进行混音处理；通过桥接芯片将I2S混音信号转换为USB混音信号；通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
可选的，该系统中还包括外接功放，外接扩展设备通过Line Out(中文： 线缆输出)接口或SPDIF(SONY/PHILIPS Digital Interface Format，数字音频接口)与外接功放相连；
外接扩展设备，还用于通过Line Out接口或SPDIF向外接功放传输I2S混音信号；
外接功放，用于播放接收到的I2S混音信号。
第二方面，提供了一种外接扩展设备，该外接扩展设备包括：
混音处理芯片以及与混音处理芯片电性相连的集成物理接口；
外接扩展设备通过集成物理接口与电视设备相连，并接收电视设备的供电和信号传输；
混音处理芯片，用于获取电视设备通过集成物理接口传输的伴奏音频信号；对麦克风设备采集的用户声音信号以及伴奏音频信号进行混音处理；
混音处理芯片，还用于通过集成物理接口向电视设备的功放电路传输混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
外接扩展设备通过I2S接口接收伴奏音频信号，并通过I2S接口传输混音信号。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
第一管脚用于传输SCK信号；
第二管脚用于传输WS信号；
第三管脚用于传输SD IN；
第四管脚用于传输SD OUT；
第五管脚用于传输MCLK信号、SD IN或SD OUT中任一信号。
可选的，外接扩展设备还包括桥接芯片；
桥接芯片的一端与USB2.0子接口电性相连，桥接芯片的另一端与混音处理芯片电性相连；
桥接芯片，用于将电视设备通过USB2.0子接口传输的USB伴奏音频信号转换为I2S伴奏音频信号；向混音处理芯片传输I2S伴奏音频信号；
混音处理芯片，用于对用户声音信号和I2S伴奏音频信号进行混音处理； 向桥接芯片传输I2S混音信号；
桥接芯片，还用于将I2S混音信号转换为USB混音信号；通过USB2.0子接口向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
可选的，外接扩展设备还包括Line Out接口或SPDIF；
外接扩展设备通过Line Out接口或SPDIF向外接功放传输I2S混音信号。
第三方面，提供了一种音频播放方法，用于外接扩展设备，该方法包括：
获取麦克风设备采集的用户声音信号；
通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号；
对用户声音信号和伴奏音频信号进行混音处理；
通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号，包括：
通过I2S子接口接收电视设备传输的伴奏音频信号；
通过集成物理接口向电视设备的功放电路传输混音信号，包括：
通过I2S子接口向电视设备的功放电路传输混音信号。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
第一管脚用于传输SCK信号；
第二管脚用于传输WS信号；
第三管脚用于传输SD IN；
第四管脚用于传输SD OUT；
第五管脚用于传输MCLK信号、SD IN或SD OUT中任一信号。
可选的，该方法，还包括：
通过集成物理接口中的I2S子接口向电视设备的AP传输混音信号，AP用于将混音信号存储为录音。
可选的，电视设备通过USB2.0子接口并调用UAC传输USB伴奏音频信 号；
该方法，还包括：
通过USB2.0子接口接收USB伴奏音频信号；
通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号；
对用户声音信号和I2S伴奏音频信号进行混音处理生成I2S混音信号；
通过桥接芯片将I2S混音信号转换为USB混音信号；
通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
可选的，外接扩展设备通过Line Out接口或SPDIF与外接功放相连；
该方法，还包括：
通过Line Out接口或SPDIF向外接功放传输I2S混音信号，外接功放用于播放接收到的I2S混音信号。
第四方面，提供了一种音频播放方法，用于电视设备，该方法包括：
通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号；
通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的；
通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号，包括：
通过I2S子接口向外接扩展设备传输伴奏音频信号。
可选的，I2S子接口具有打开状态和关闭状态；处于关闭状态下，I2S子接口禁止传输I2S信号；
该方法，还包括：
检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识；
若设备标识指示外部设备是外接扩展设备，则将I2S子接口设置为打开状态；
若设备标识指示外部设备不是外接扩展设备，则将I2S子接口设置为关闭状态。
该方法，还包括：
通过AP接收外接扩展设备传输的混音信号；
将混音信号存储为录音。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
该方法，还包括：
通过USB2.0子接口并调用UAC向外接扩展设备传输USB伴奏音频信号；
通过USB2.0子接口接收外接扩展设备传输的USB混音信号，USB混音信号是外接扩展设备通过桥接芯片对I2S混音信号进行转换得到的，I2S混音信号是外接扩展设备对用户声音信号和I2S伴奏音频信号进行混音处理得到的，I2S伴奏音频信号是外接扩展设备通过桥接芯片对USB伴奏音频信号进行转换得到的；
将USB混音信号存储为录音。
第五方面，提供了一种音频播放装置，其特征在于，该装置包括：
第一获取模块，被配置为获取麦克风设备采集的用户声音信号；
第一接收模块，被配置为通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号；
第一处理模块，被配置为对用户声音信号和伴奏音频信号进行混音处理；
第一传输模块，被配置为通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
第一接收模块，被配置为通过I2S子接口接收电视设备传输的伴奏音频信号；
第一传输模块，被配置为通过I2S子接口向电视设备的功放电路传输混音信号。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
第一管脚用于传输SCK信号；
第二管脚用于传输WS信号；
第三管脚用于传输SD IN；
第四管脚用于传输SD OUT；
第五管脚用于传输MCLK信号、SD IN或SD OUT中任一信号。
可选的，该装置，还包括：
第二传输模块，被配置为通过集成物理接口中的I2S子接口向电视设备的AP传输混音信号，AP用于将混音信号存储为录音。
可选的，电视设备通过USB2.0子接口并调用UAC传输USB伴奏音频信号；
该装置，还包括：
第二接收模块，被配置为通过USB2.0子接口接收USB伴奏音频信号
第一转换模块，被配置为通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号；
第二处理模块，被配置为对用户声音信号和I2S伴奏音频信号进行混音处理生成I2S混音信号；
第二转换模块，被配置为通过桥接芯片将I2S混音信号转换为USB混音信号；
第三传输模块，被配置为通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
可选的，外接扩展设备通过Line Out接口或SPDIF与外接功放相连；
该装置，还包括：
第四传输模块，被配置为通过Line Out接口或SPDIF向外接功放传输I2S混音信号，外接功放用于播放接收到的I2S混音信号。
第六方面，提供了一种音频播放装置，该装置包括：
第五传输模块，被配置为通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号；
第三接收模块，被配置为通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的；
播放模块，被配置为通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
第五传输模块，被配置为通过I2S子接口向外接扩展设备传输伴奏音频信 号。
可选的，I2S子接口具有打开状态和关闭状态；处于关闭状态下，I2S子接口禁止传输I2S信号；
该装置，还包括：
检测模块，被配置为检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识；
第一设置模块，被配置为若设备标识指示外部设备是外接扩展设备，则将I2S子接口设置为打开状态；
第二设置模块，被配置为若设备标识指示外部设备不是外接扩展设备，则将I2S子接口设置为关闭状态。
可选的，该装置，还包括：
第四接收模块，被配置为通过AP接收外接扩展设备传输的混音信号；
第一存储模块，被配置为将混音信号存储为录音。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
该装置，还包括：
第六传输模块，被配置为通过USB2.0子接口并调用UAC向所述外接扩展设备传输USB伴奏音频信号；
第五接收模块，被配置为通过USB2.0子接口接收外接扩展设备传输的USB混音信号，USB混音信号是外接扩展设备通过桥接芯片对I2S混音信号进行转换得到的，I2S混音信号是外接扩展设备对用户声音信号和I2S伴奏音频信号进行混音处理得到的，I2S伴奏音频信号是外接扩展设备通过桥接芯片对USB伴奏音频信号进行转换得到的；
第二存储模块，被配置为将USB混音信号存储为录音。
第七方面，提供了一种音频播放装置，该装置包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：
获取麦克风设备采集的用户声音信号；
通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号；
对用户声音信号和伴奏音频信号进行混音处理；
通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
第八方面，提供了一种音频播放装置，该装置包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，处理器被配置为：
通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号；
通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的；
通过内置扬声器播放功放电路接收到的混音信号。
本公开的实施例提供的技术方案可以包括以下有益效果：
通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
应当理解的是，以上的一般描述和后文的细节描述仅是示意性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本公开的实施例，并于说明书一起用于解释本公开的原理。
图1示出了一示意性实施例所提供的音频播放系统的系统架构图；
图2A是图1所示音频播放系统中一种信号传输方式示意图；
图2B是一个实施例提供的集成物理接口的示意图；
图2C是图1所示音频播放系统中另一种信号传输方式示意图；
图3示出了一示意性实施例所提供的外接扩展设备和电视设备的结构示意图；
图4示出了一示意性实施例所提供的音频播放方法的方法流程图；
图5示出了另一示意性实施例所提供的音频播放方法的方法流程图；
图6A示出了再一示意性实施例所提供的音频播放方法的方法流程图；
图6B示出了又一示意性实施例所提供的音频播放方法的方法流程图；
图6C示出了还一示意性实施例所提供的音频播放方法的方法流程图；
图6D示出了还一示意性实施例所提供的音频播放方法的方法流程图；
图6E示出了还一示意性实施例所提供的音频播放方法的方法流程图；
图7示出了一示意性实施例提供的音频处理装置的结构示意图；
图8示出了另一示意性实施例提供的音频处理装置的结构示意图；
图9示出了再一示意性实施例提供的音频播放装置的结构示意图；
图10示出了又一示意性实施例提供的音频播放装置的结构示意图；
图11是根据一示意性实施例示出的电视设备的框图。
具体实施方式
这里将详细地对示意性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示意性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
图1示出了一示意性实施例所提供的音频播放系统的系统架构图。该音频播放系统中包括麦克风设备110、外接扩展设备120和电视设备130。
麦克风设备110用于采集用户声音信号，并向外接扩展设备120传输该用户声音信号。比如，该麦克风设备110可以是通过线缆与外界扩展设备120相连的话筒。
麦克风设备110与外接扩展设备120之间通过有线或无线相连。
外接扩展设备120是具有音频处理及传输功能的电子设备。外接扩展设备120中包括集成物理接口，并通过该集成物理接口与电视设备130电性相连，接收电视设备130的供电并与电视设备130进行信号传输。其中，该集成物理 接口可以为USB2.0接口、USB3.0接口、Type C(C型)接口或Lightning(闪电)接口等等，比如，如图1所示，该外接扩展设备120可以实现成为配置有USB3.0接口的USB设备。
电视设备130是具有音视频播放功能的电子设备，该电视设备可以为智能电视或带扬声器的投影仪等等。电视设备130用于接收外接扩展设备120传输的混音信号，并通过内置扬声器播放该混音信号，其中，该混音信号根据用户声音信号和伴奏音频信号生成。需要说明的是，该电视设备130还可以实现成为智能电视盒子+电视的组合，且外接扩展设备120与智能电视盒子通过集成物理接口相连。
可选的，该音频播放系统中还可以包括与外接扩展设备120相连的外接功放140。
外接功放140可以是与外接扩展设备120相连的音箱，用于接收外接扩展设备120传输的混音信号，并进行播放。
利用图1所示的音频播放系统在进行卡拉OK时，如图2A所示，麦克风设备110，用于向外接扩展设备120传输采集到的用户声音信号。
在进行卡拉OK时，麦克风设备负责采集用户声音信号，并通过与外接扩展设备之间的连接，将采集到的用户声音信号实时传输至外接扩展设备120。
电视设备130，用于通过集成物理接口向外接扩展设备120传输伴奏音频信号。
外接扩展设备通过集成物理接口与电视设备相连后，电视设备通过该集成物理接口为外接扩展设备供电，并在用户演唱的同时，通过该集成物理接口向外接扩展设备传输伴奏音信信号，使得外接扩展设备能够根据用户声音信号和伴奏音频信号进行混音处理。
外接扩展设备120，用于对用户声音信号和伴奏音频信号进行混音处理生成混音信号；通过集成物理接口向电视设备130的功放电路传输混音信号。
外接扩展设备接收到用户声音信号以及伴奏音频信号后，对用户声音信号和伴奏音频信号进行融合，并对融合后的声音信号进行混音处理，生成相应的混音信号。生成混音信号后，外接扩展设备通过集成物理接口，向电视设备回传该混音信号，从而借助电视设备的内置扬声器进行播放。需要说明的是，为了降低延迟，通过该集成物理接口传输的混音信号被直接传输至电视设备的功 放电路，而非传输至电视设备的AP中(经由AP将混音信号传输至功放电路存在较大延迟)。
为了使电视设备的内置扬声器能够直接对接收到的混音信号进行播放，在一种可能的实施方式中，外接扩展设备120与电视设备130之间的集成物理接口中包括I2S子接口(I2S子接口用于传输I2S信号)，电视设备即通过该I2S子接口向外接扩展设备传输伴奏音频信号；外接扩展设备120即通过该I2S子接口直接向电视设备的功放电路传输混音信号。
需要说明的是，在其他可能的实施方式中，该I2S子接口还可以被替换为PCM(Pulse Code Modulation，脉冲编码调制)子接口，本实施例并不对此进行限定。
电视设备130，还用于通过内置扬声器播放功放电路接收到的混音信号。
电视设备通过内置功放电路接收外接扩展设备传输的混音信号，并使用内置扬声器对该混音信号进行播放。由于该混音信号被直接传输到功放电路，而非经由电视设备AP传输至功放电路，在用户体验上，用户演唱与电视设备播放混音之间的延迟较小，用户体验良好。
通过I2S子接口传输的I2S信号中，不仅包括数据，还包含相应的时钟信号，因此，在一种可能的实施方式中，外接扩展设备与电视设备之间的集成物理接口为USB3.0接口，即外接扩展设备配置有USB3.0公头，电视设备配置有USB3.0母头。
其中，该USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口。外接扩展设备与电视设备进行信号传输时，即通过USB3.0管脚构成的I2S子接口进行信号传输(伴奏音频信号和混音信号)。
具体的，USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚，其中，第一管脚用于传输SCK信号，第二管脚用于传输WS信号，第三管脚用于传输SD IN，第四管脚用于传输SD OUT，第五管脚用于传输MCLK信号、SD IN或SD OUT中任一信号。
SCK信号用于同步数据传输，避免接收端接收I2S信号时由于时钟不同步导致的接收错误；WS信号用于指示I2S信号中数据的左右声道；SD IN为输入数据，且SD IN中包括左右两个声道的数据；SD OUT为输出数据，且SD OUT 中也包括左右两个声道的数据。第五管脚中可用于传输MCLK信号、SD IN或SD OUT，当第五管脚传输SD IN或SD OUT时，电视设备可以通过该I2S子接口向外接扩展设备传输4声道的音频伴奏信号，相应的，该外接扩展设备可以通过该I2S子接口向电视设备回传4声道的混音信号，并最终实现4声道播放。
比如，如图2B所示，集成物理接口为USB3.0接口，其中，USB3.0中的GND管脚、D-管脚、D+管脚和VCC管脚USB2.0子接口，USB3.0中的SS_RX+管脚、SS_RX-管脚、SS_TX+管脚、SS_TX-管脚和GND_DRAIN管脚构成I2S子接口，并分别用于传输SCK信号、WS信号、SD IN、SD OUT和MCLK信号。
电视设备上的集成物理接口(母头)不仅可以与该外接扩展设备相连，还可以与其他外部设备相连。当电视设备与外接扩展设备相连时，电视设备需要通过I2S子接口与外接扩展设备进行信号传输；当电视设备与其他外部设备(比如标准USB3.0设备)相连时，该I2S子接口对应的管脚可能并非用来传输I2S信号。
因此，为了避免信号传输错误以及集成物理接口损坏，在一种可能的实施方式中，集成物理接口中的I2S子接口具有打开状态和关闭状态，当电视设备与外接扩展设备相连时，该I2S子接口处于打开状态，该I2S子接口能够传输I2S信号；当电视设备与外接扩展设备相连时，该I2S子接口处于关闭状态，I2S子接口禁止传输I2S信号。具体的，电视设备130，用于检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识。
电视设备检测到有外部设备相连时，获取该外部设备的设备标识，并检测该设备标识与外接扩展设备的表示是否相同。
在一种可能的实施方式中，电视设备根据获取的设备标识，确定该外部设备的设备类型，其中，该设备类型可以包括标准USB3.0设备和外接扩展设备等等。
电视设备130，还用于若设备标识指示外部设备是外接扩展设备120，则将I2S子接口设置为打开状态。
当获取到的设备标识指示相连的外部设备为外接扩展设备时，电视设备需要通过I2S子接口进行信号传输，即将I2S子接口设置为打开状态。
电视设备130，还用于若设备标识指示外部设备不是外接扩展设备120，则将I2S子接口设置为关闭状态。
当获取到的设备标识指示相连的外部设备不是外接扩展设备时，I2S子接口对应的管脚并非用于信号传输，即将I2S子接口设置为关闭状态(I2S子接口对应的管脚处于高阻态)。
可选的，电视设备还可以根据外部设备的类型，切换不同的管脚模式，比如，当设备标识指示外部设备为外接扩展设备时，电视设备将集成物理接口切换为第一管脚模式，第一管脚模式下，启用I2S子接口；当设备标识指示外部设备为标准USB3.0设备时，电视设备将集成物理接口切换为第二管脚模式，第二管脚模式下，I2S子接口切换为标准USB3.0子接口，该集成物理接口即可作为标准USB接口与标准USB设备进行数据传输。
可选的，外接扩展设备120，还用于通过集成物理接口中的I2S子接口向电视设备130的AP传输混音信号，AP用于将混音信号存储为录音。
用户演唱完毕后，可能需要进行回放，因此，外接扩展设备向电视设备的功放电路传输混音信号的同时还可以通过I2S子接口向电视设备的AP传输该混音信号。电视设备的AP接收到该混音信号后，对其存储为录音，当用户指示进行回放时，电视设备即通过播放该录音。需要说明的是，外接扩展设备还可以将麦克风设备采集的用户声音信号传输至电视设备的AP，使得用户可以回放不带伴奏的声音，本公开实施例并不对此进行限定。
当集成物理接口为USB3.0接口时，电视设备与外接扩展设备之间不仅可以通过I2S子接口进行信号传输，还可以通过USB3.0接口中的USB2.0子接口进行信号传输，并借助外接功放进行音频播放。
在一种可能的实施方式中，如图2C所示，电视设备，还用于通过USB2.0子接口并调用UAC(USB Audio Class，USB音频类)向外接扩展设备传输USB伴奏音频信号。
当电视设备支持UAC且检测到外接扩展设备与其相连时，电视设备即可通过USB2.0子接口向外接扩展设备传输USB伴奏音频信号。
外接扩展设备，还用于通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号；对用户声音信号和I2S伴奏音频信号进行混音处理；通过桥接芯 片将I2S混音信号转换为USB混音信号；通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
相应的，外接扩展设备通过集成物理接口中的USB2.0子接口接收电视设备传输的USB音频伴奏信号。对于接收到USB音频伴奏信号，外接扩展设备通过内置的桥接芯片将该USB伴奏音频信号转换为I2S伴奏音频信号，其中，该桥接芯片用于对I2S信号和USB音频信号进行转换。
外接扩展设备对麦克风设备传输的用户声音信号以及转换得到的I2S伴奏音频信号进行混音处理，达到相应的I2S混音信号。
为了实现混音信号的回传，外接扩展设备处理得到I2S混音信号后，需要再次利用桥接芯片将该I2S混音信号转换为USB混音信号，并通过USB2.0子接口向电视设备的AP回传该USB混音信号。
若电视设备的AP对接收到的USB混音信号进行处理，并通过功放电路传输给内置扬声器进行播放，将会产生较大的延时(大于30ms)，导致内置扬声器播放的音频存在明显滞后，影响用户体验，因此，电视设备的AP接收到回传的USB混音信号后，将该USB混音信号作为录音进行存储，供后续回放使用。
需要说明的是，当集成物理接口为USB2.0接口时，外接扩展设备和电视设备也可以通过上述方法实现信号传输，本实施例仅以集成物理接口为USB3.0接口为例进行示意性说明，并不对本公开构成限定。
外接扩展设备，还用于通过Line Out接口或SPDIF向外接功放传输I2S混音信号；
外接功放，用于播放接收到的I2S混音信号。
为了使用户收听到混音后的音频，外接扩展设备上还设置有Line Out接口或SPDIF。完成混音处理后，外接扩展设备即可通过Line Out接口或SPDIF外接功放传输I2S混音信号，使得外接功放能够进行音频播放；同时，由于I2S混音信号无需经过AP，用户演唱与外接功放播放音频之间的延迟较小，用户体验良好。
结合图2A和图2B，如图3所示，其示出了一示意性实施例所提供的外接扩展设备310和电视设备320的结构示意图。
其中，外接扩展设备310中包括混音处理芯片311以及与混音处理芯片311 电性相连的集成物理接口312(公头)；电视设备320中包括集成物理接口321(母头)、功放电路322以及扬声器323。
外接扩展设备310通过集成物理接口312与电视设备320的集成物理接口321相连，并接收电视设备320的供电和信号传输。
该集成物理接口可以是USB2.0接口、USB3.0接口、Type C接口或Lightning接口等等。
混音处理芯片311，用于获取电视设备320通过集成物理接口321传输的伴奏音频信号；对麦克风设备采集的用户声音信号以及伴奏音频信号进行混音处理。
外接扩展设备310通过有线或无线方式接收麦克风设备采集到的用户声音信号。可选的，外接扩展设备310中还可以包括音频输入接口，并通过该音频输入接口接收麦克风设备传输的用户声音信号。
用户进行卡拉OK时，电视设备320通过与外接扩展设备310之间的集成物理接口321向外接扩展设备310传输伴奏音频信号，外接扩展设备310接收到该伴奏音频信号后，通过混音处理芯片311对伴奏音频信号以及用户声音信号进行混音处理。
混音处理芯片311，还用于通过集成物理接口向电视设备的功放电路传输混音信号。
对伴奏音频信号以及用户声音信号进行混音处理后，混音处理芯片311通过集成物理接口312将处理得到的混音信号传输至电视设备320内部的功放电路322，电视设备320通过内置扬声器323对功放电路322接收到的混音信号进行播放。
在一种可能的实施方式中，外接扩展设备310的集成物理接口312为USB3.0接口(公头)，相应的，电视设备320的集成物理接口321也可以为USB3.0接口(母头)。
其中，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口3122，USB3.0接口中的USB3.0管脚用于构成I2S子接口3121，外接扩展设备310即通过I2S子接口3121接收电视设备320传输的伴奏音频信号，并通过I2S子接口3121向电视设备320回传混音信号。
具体的，如图2B所示，USB3.0中的GND管脚、D-管脚、D+管脚和VCC 管脚USB2.0子接口，USB3.0中的SS_RX+管脚、SS_RX-管脚、SS_TX+管脚、SS_TX-管脚和GND_DRAIN管脚构成I2S子接口，并分别用于传输SCK信号、WS信号、SD IN、SD OUT和MCLK信号。
当电视设备320支持UAC时，电视设备320不仅可以通过I2S子接口与外接扩展设备310进行信号传输，还可以通过USB2.0子接口进行信号传输。可选的，如图3所示，外接扩展设备320还包括桥接芯片313。
桥接芯片313的一端与USB2.0子接口3122电性相连，桥接芯片313的另一端与混音处理芯片311电性相连。
桥接芯片313，用于将电视设备320通过USB2.0子接口3122传输的USB伴奏音频信号转换为I2S伴奏音频信号；向混音处理芯片311传输I2S伴奏音频信号。
桥接芯片311用于将USB信号转换为I2S信号，或，将I2S信号转换为USB信号。桥接芯片313通过USB2.0子接口3122接收到电视设备320传输的USB伴奏音频信号后，将该USB伴奏音频信号转换为I2S伴奏音频信号，并将转换得到的I2S伴奏音频信号传输至混音处理芯片311。
混音处理芯片311，用于对用户声音信号和I2S伴奏音频信号进行混音处理。
混音处理芯片311对用户声音信号和I2S伴奏音频信号进行混音处理，得到相应的混音信号。
如图3所示，当外接扩展设备310利用USB2.0子接口3122进行混音信号回传时，该混音信号需要经过电视设备320的AP324，由AP324对该混音信号进行处理后将其发送至功放电路322。采用这种方式进行回传，延迟将会大大提高，影响用户体验。为了减小传输延迟，可选的，如图3所示，外接扩展设备310还包括Line Out接口或SPDIF314。
混音处理芯片311处理得到混音信号后，即通过Line Out接口或SPDIF314向外接功放传输I2S混音信号；外接功放接收到该I2S混音信号后进行播放，能够显著减小用户演唱与混音播放之间的延迟。
可选的，混音处理芯片311还用于向桥接芯片313传输I2S混音信号；
桥接芯片313，还用于将I2S混音信号转换为USB混音信号；通过USB2.0子接口3122向电视设备320的AP324传输USB混音信号，AP用于将USB混 音信号存储为录音。
需要说明的是，在其他可能的实施方式中，混音处理芯片311还可以仅向桥接芯片313回传麦克风设备采集到的用户声音信号，本实施例并不对此进行限定。
混音处理芯片311通过Line Out接口或SPDIF314向外接功放传输I2S混音信号的同时，还可以向桥接芯片313传输该I2S混音信号。桥接芯片313接收到I2S混音信号后，将I2S混音信号转换为USB混音信号，并通过USB2.0子接口3122向电视设备320的AP324传输USB混音信号。AP324接收到该USB混音信号后，将其存储为录音，当用户进行回放操作时，AP324即可将存储的录音发送至功放电路322，并借助内置扬声器323进行播放。
需要说明的是，本实施例中，桥接芯片和混音处理芯片可以是独立设置的芯片，或者，桥接芯片可以是集成在混音处理芯片内部的芯片，本公开实施例并不对此进行限定。
图4示出了一示意性实施例所提供的音频播放方法的方法流程图。本实施例以该音频播放方法应用于图1中的外接扩展设备120为例进行说明。该音频播放方法包括：
在步骤401中，获取麦克风设备采集的用户声音信号。
在步骤402中，通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号。
在步骤403中，对用户声音信号和伴奏音频信号进行混音处理。
在步骤404中，通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
综上所述，本实施例提供的音频播放方法，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能 进行升级。
图5示出了另一示意性实施例所提供的音频播放方法的方法流程图。本实施例以该音频播放方法应用于图1中的电视设备130为例进行说明。该音频播放方法包括：
在步骤501中，通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号。
在步骤502中，通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的。
在步骤503中，通过内置扬声器播放功放电路接收到的混音信号。
综上所述，本实施例提供的音频播放方法，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
图6A示出了再一示意性实施例所提供的音频播放方法的方法流程图。本实施例以该音频播放方法应用于图1所示的音频播放系统为例进行说明。该音频播放方法包括：
在步骤601中，外接扩展设备获取麦克风设备采集的用户声音信号。
当该麦克风设备为有线话筒等有线设备时，外接扩展设备即通过与麦克风设备之间的线缆获取麦克风设备采集到的用户声音信号；当该麦克风设备为无线话筒的无线设备时，外接扩展设备即通过无线获取该用户声音信号。本实施例并不对外接扩展设备获取用户声音信号的方式进行限定。
在步骤602中，电视设备通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号。
在一种可能的实施方式中，该集成物理接口中包括用于传输I2S信号的I2S子接口，电视设备即通过集成物理接口中的I2S子接口向外接扩展设备传输伴奏音频信号。
在步骤603中，外接扩展设备通过集成物理接口接收电视设备传输的伴奏音频信号。
相应的，外接扩展设备通过集成物理接口中的I2S子接口接收该伴奏音频信号。
在步骤604中，外接扩展设备对用户声音信号和伴奏音频信号进行混音处理。
由于外接扩展设备中内置有混音处理芯片，因此，在接收到用户声音信号和伴奏音频信号，由外接扩展设备对两者进行混音处理，最终得到相应的混音信号。
在步骤605中，外接扩展设备通过集成物理接口向电视设备的功放电路传输混音信号。
与电视设备传输伴奏音频信号相似的，当集成物理接口中包括I2S子接口时，外接扩展设备即通过该I2S子接口直接向电视设备的功放电路传输混音信号。
在步骤606中，电视设备通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号。
相应的，电视设备通过I2S子接口接收外接扩展设备向功放电路传输的混音信号。
在步骤607中，电视设备通过内置扬声器播放功放电路接收到的混音信号。
由于该混音信号被直接传输至功放电路，而未经过电视设备的AP，其传输延迟较低，即用户演唱与混音播放之间的时间间隔较短(低于30ms)，从而达到较好的用户体验。
综上所述，本实施例提供的音频播放方法，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至 电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
本实施例中，外接扩展设备通过与电视设备之间的I2S子接口直接将混音处理后的混音信号传输至电视设备的功放电路，并由电视设备的内置扬声器进行播放，避免了通过电视设备的AP进行混音信号进行回传，从而降低了回传延迟，提升了用户体验。
电视设备上的集成物理接口(母头)不仅可以与该外接扩展设备相连，还可以与其他外部设备相连。当电视设备与外接扩展设备相连时，电视设备需要通过I2S子接口与外接扩展设备进行信号传输；当电视设备与其他外部设备(比如标准USB3.0设备)相连时，该I2S子接口对应的管脚可能并非用来传输I2S信号。
因此，为了避免信号传输错误以及集成物理接口损坏，在一种可能的实施方式中，集成物理接口中的I2S子接口具有打开状态和关闭状态，当电视设备与外接扩展设备相连时，该I2S子接口处于打开状态，该I2S子接口能够传输I2S信号；当电视设备与外接扩展设备相连时，该I2S子接口处于关闭状态，I2S子接口禁止传输I2S信号。如图6B所示，上述步骤602之前，还可以包括如下步骤。
在步骤608中，电视设备检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识。
不同类型的外部设备具有不同的设备标识，电视设备即可根据外部设备的设备标识确定该外部设备是否为具有卡拉OK功能的外接扩展设备。
在一种可能的实施方式中，电视设备获取到设备标识后，检测该设备标识中是否包含预定关键词(比如Cara OK)，当检测该设备标识中包含预定关键词时，确定该外部设备为外接扩展设备；当检测该设备标识中不包含预定关键词时，确定该外部设备不是外接扩展设备。
在步骤609中，若设备标识指示外部设备是外接扩展设备，电视设备则将I2S子接口设置为打开状态。
当检测到该外部设备为外接扩展设备时，电视设备将集成物理接口中I2S子接口设置为打开状态，并通过I2S子接口进行伴奏音频信号传输，执行步骤 602。
在步骤610中，若设备标识指示外部设备不是外接扩展设备，电视设备则将I2S子接口设置为关闭状态。
当检测到该外部设备不是外接扩展设备时，电视设备可以将I2S子接口的管脚设置为高阻态，使得该I2S子接口处于关闭状态，停止I2S信号传输。
进一步的，电视设备还可以根据该外部设备的设备类型，对I2S子接口进行切换。比如，当该外部设备为标准USB3.0设备时，电视设备可以将I2S子接口切换为标准USB3.0子接口，保证标准USB3.0设备与电视设备的数据传输，本公开并不对此进行限定。
本实施例中，电视设备根据外部设备的设备标识确定该外部设备是否为外接扩展设备，并在该外部设备不是外接扩展设备时将I2S设置为关闭状态，避免了信号传输错误以及集成物理接口损坏。
可选的，在图6A的基础上，如图6C所示，上述步骤604之后，还可以包括如下步骤。
在步骤611中，外接扩展设备通过集成物理接口中的I2S子接口向电视设备的AP传输混音信号。
外接扩展设备向电视设备功放电路传输混音信号时，可以通过I2S子接口向向电视设备的AP传输混音信号。需要说明的是，在其他可能的实施方式中，外接扩展设备还可以仅将用户声音信号回传给电视设备AP，本实施例并不对此进行限定。
在步骤612中，电视设备通过AP接收外接扩展设备传输的混音信号。
在步骤613中，电视设备将混音信号存储为录音。
接收到该混音信号后，电视设备将该混音信号存储为录音以供回放；同时，电视设备的AP还可以根据该录音的音准和节奏进行评分，并对评分进行显示，本公开并不对此进行限定。
在一种可能的实施方式中，电视设备还可以通过集成物理接口中的USB2.0子接口向外接扩展设备传输伴奏音频信号，外接扩展设备也可以借助外接功放对处理后的混音信号进行播放。如图6D所示，当电视设备与外接扩展设备之间的集成物理接口中包括USB子接口时，上述步骤601之后，可以 包括如下步骤。
在步骤614中，电视设备通过USB2.0子接口并调用UAC传输USB伴奏音频信号。
当电视设备支持UAC时，电视设备可以通过USB2.0子接口向外接扩展设备传输USB音频信号。
在步骤615中，外接扩展设备通过USB2.0子接口接收USB伴奏音频信号。
相应的，外接扩展设备通过该USB2.0子接口接收电视设备传输的USB伴奏音频信号。
在步骤616中，外接扩展设备通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号。
如图3所示，外接扩展设备310的USB2.0子接口3122与桥接芯片313电性相连，当接收到USB伴奏音频信号时，外接扩展设备即通过该桥接芯片313将USB伴奏音频信号转换为I2S伴奏音频信号。本实施例并不对桥接芯片的类型进行限定。
在步骤617中，外接扩展设备对用户声音信号和I2S伴奏音频信号进行混音处理生成I2S混音信号。
与上述步骤604相似的，外接扩展设备对转换得到的I2S伴奏音频信号以及用户声音信号进行混音处理，生成相应的I2S混音信号。
在步骤618中，外接扩展设备通过Line Out接口或SPDIF向外接功放传输I2S混音信号。
为了降低用户演唱与混音播放之间的延迟，如图3所示，外接扩展设备310通过Line Out/SPDIF314向外接功放传输I2S混音信号，使得外接功放能够进行混音音频的播放。
在步骤619中，外接功放播放该I2S混音信号。
本实施例中，电视设备通过USB2.0子接口向外接扩展设备传输USB伴奏音频信号，外接扩展设备根据该USB伴奏音频信号和用户声音信号生成I2S混音信号，并借助外接功放进行播放，扩大了外接扩展设备的适用范围，减小用户演唱与混音播放之间的延迟，提高了用户体验。
可选的，在图6D的基础上，如图6E所示，上述步骤617之后，还可以包括如下步骤。
在步骤618中，外接扩展设备通过桥接芯片将I2S混音信号转换为USB混音信号。
如图3所示，外接扩展设备320通过Line Out/SPDIF314向外接功放传输I2S混音信号的同时，通过桥接芯片313将I2S混音信号转换为USB混音信号。
需要说明的是，外接扩展设备还可以仅将用户声音信号回传给电视设备AP，本实施例并不对此进行限定。
在步骤619中，外接扩展设备通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号。
与电视设备传输USB伴奏音频信号相似的，外接扩展设备通过USB2.0子接口并调用UAC向电视设备的AP传输转换得到的USB混音信号。
在步骤620中，电视设备将USB混音信号存储为录音。
电视设备将接收到的USB混音信号存储为录音以供回放；同时，电视设备的AP还可以根据该录音的音准和节奏进行评分，并对评分进行显示，本公开并不对此进行限定。
下述为本公开装置实施例，可以用于执行本公开方法实施例。对于本公开装置实施例中未披露的细节，请参照本公开方法实施例。
图7示出了一示意性实施例提供的音频处理装置的结构示意图。该音频处理装置可以通过专用硬件电路，或者，软硬件的结合实现成为图1中外接扩展设备120的全部或一部分，该音频处理装置包括：
第一获取模块701，被配置为获取麦克风设备采集的用户声音信号；
第一接收模块702，被配置为通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号；
第一处理模块703，被配置为对用户声音信号和伴奏音频信号进行混音处理；
第一传输模块704，被配置为通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
综上所述，本实施例提供的音频处理装置，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视 机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
图8示出了另一示意性实施例提供的音频处理装置的结构示意图。该音频处理装置可以通过专用硬件电路，或者，软硬件的结合实现成为图1中外接扩展设备120的全部或一部分，该音频处理装置包括：
第一获取模块801，被配置为获取麦克风设备采集的用户声音信号；
第一接收模块802，被配置为通过与电视设备间的集成物理接口接收电视设备传输的伴奏音频信号；
第一处理模块803，被配置为对用户声音信号和伴奏音频信号进行混音处理；
第一传输模块804，被配置为通过集成物理接口向电视设备的功放电路传输混音信号，电视设备用于通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
第一接收模块802，被配置为通过I2S子接口接收电视设备传输的伴奏音频信号；
第一传输模块804，被配置为通过I2S子接口向电视设备的功放电路传输混音信号。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
第一管脚用于传输SCK信号；
第二管脚用于传输WS信号；
第三管脚用于传输SD IN；
第四管脚用于传输SD OUT；
第五管脚用于传输MCLK信号、SD IN或SD OUT中任一信号。
可选的，该装置，还包括：
第二传输模块805，被配置为通过集成物理接口中的I2S子接口向电视设备的AP传输混音信号，AP用于将混音信号存储为录音。
可选的，电视设备通过USB2.0子接口并调用UAC传输USB伴奏音频信号；
该装置，还包括：
第二接收模块806，被配置为通过USB2.0子接口接收USB伴奏音频信号
第一转换模块807，被配置为通过桥接芯片将USB伴奏音频信号转换为I2S伴奏音频信号；
第二处理模块808，被配置为对用户声音信号和I2S伴奏音频信号进行混音处理生成I2S混音信号；
第二转换模块809，被配置为通过桥接芯片将I2S混音信号转换为USB混音信号；
第三传输模块810，被配置为通过USB2.0子接口并调用UAC向电视设备的AP传输USB混音信号，AP用于将USB混音信号存储为录音。
可选的，外接扩展设备通过Line Out接口或SPDIF与外接功放相连；
该装置，还包括：
第四传输模块811，被配置为通过Line Out接口或SPDIF向外接功放传输I2S混音信号，外接功放用于播放接收到的I2S混音信号。
综上所述，本实施例提供的音频处理装置，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
本实施例中，外接扩展设备通过与电视设备之间的I2S子接口直接将混音处理后的混音信号传输至电视设备的功放电路，并由电视设备的内置扬声器进行播放，避免了通过电视设备的AP进行混音信号进行回传，从而降低了回传延迟，提升了用户体验。
本实施例中，电视设备根据外部设备的设备标识确定该外部设备是否为外接扩展设备，并在该外部设备不是外接扩展设备时将I2S设置为关闭状态，避免了信号传输错误以及集成物理接口损坏。
本实施例中，电视设备通过USB2.0子接口向外接扩展设备传输USB伴奏音频信号，外接扩展设备根据该USB伴奏音频信号和用户声音信号生成I2S混音信号，并借助外接功放进行播放，扩大了外接扩展设备的适用范围，减小用户演唱与混音播放之间的延迟，提高了用户体验。
图9示出了再一示意性实施例提供的音频播放装置的结构示意图。该音频播放装置可以通过专用硬件电路，或者，软硬件的结合实现成为图1中电视设备130的全部或一部分，该音频播放装置包括：
第五传输模块901，被配置为通过与外接扩展设备之间的集成物理接口向外接扩展设备传输伴奏音频信号；
第三接收模块902，被配置为通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的；
播放模块903，被配置为通过内置扬声器播放功放电路接收到的混音信号。
综上所述，本实施例提供的音频播放装置，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
图10示出了又一示意性实施例提供的音频播放装置的结构示意图。该音频播放装置可以通过专用硬件电路，或者，软硬件的结合实现成为图1中电视设备130的全部或一部分，该音频播放装置包括：
第五传输模块1001，被配置为通过与外接扩展设备之间的集成物理接口向 外接扩展设备传输伴奏音频信号；
第三接收模块1002，被配置为通过集成物理接口接收外接扩展设备向电视设备的功放电路传输的混音信号，混音信号是外接扩展设备对麦克风设备采集的用户声音信号和伴奏音频信号进行混音处理后生成的；
播放模块1003，被配置为通过内置扬声器播放功放电路接收到的混音信号。
可选的，集成物理接口中包括I2S子接口，I2S子接口用于传输I2S信号；
第五传输模块1001，被配置为通过I2S子接口向外接扩展设备传输伴奏音频信号。
可选的，I2S子接口具有打开状态和关闭状态；处于关闭状态下，I2S子接口禁止传输I2S信号；
该装置，还包括：
检测模块1004，被配置为检测到通过集成物理接口与外部设备相连时，获取外部设备的设备标识；
第一设置模块1005，被配置为若设备标识指示外部设备是外接扩展设备，则将I2S子接口设置为打开状态；
第二设置模块1006，被配置为若设备标识指示外部设备不是外接扩展设备，则将I2S子接口设置为关闭状态。
可选的，该装置，还包括：
第四接收模块1007，被配置为通过AP接收外接扩展设备传输的混音信号；
第一存储模块1008，被配置为将混音信号存储为录音。
可选的，集成物理接口是USB3.0接口，USB3.0接口中的USB2.0管脚用于构成USB2.0子接口，USB3.0接口中的USB3.0管脚用于构成I2S子接口；
该装置，还包括：
第六传输模块1009，被配置为通过USB2.0子接口并调用UAC向所述外接扩展设备传输USB伴奏音频信号；
第五接收模块1010，被配置为通过USB2.0子接口接收外接扩展设备传输的USB混音信号，USB混音信号是外接扩展设备通过桥接芯片对I2S混音信号进行转换得到的，I2S混音信号是外接扩展设备对用户声音信号和I2S伴奏音频信号进行混音处理得到的，I2S伴奏音频信号是外接扩展设备通过桥接芯片对USB伴奏音频信号进行转换得到的；
第二存储模块1011，被配置为将USB混音信号存储为录音。
综上所述，本实施例提供的音频播放装置，通过外接扩展设备对麦克风设备采集到的用户声音信号以及电视设备传输的伴奏音频信号进行混音处理，得到混音信号，并通过与电视设备之间的集成物理接口将混音信号回传至电视设备的功放电路，由电视设备的内置扬声器对混音信号进行播放；解决了在电视机中内置卡拉OK处理芯片的成本较高，且不利于升级的问题；达到了将卡拉OK功能集成到外接扩展设备中，利用该外接扩展设备生成混音信号并回传至电视设备，最终借助电视设备内置扬声器对混音信号进行播放，从而无需在电视设备中设置卡拉OK处理芯片，降低了制造成本，方便用户对卡拉OK功能进行升级。
本实施例中，外接扩展设备通过与电视设备之间的I2S子接口直接将混音处理后的混音信号传输至电视设备的功放电路，并由电视设备的内置扬声器进行播放，避免了通过电视设备的AP进行混音信号进行回传，从而降低了回传延迟，提升了用户体验。
本实施例中，电视设备根据外部设备的设备标识确定该外部设备是否为外接扩展设备，并在该外部设备不是外接扩展设备时将I2S设置为关闭状态，避免了信号传输错误以及集成物理接口损坏。
本实施例中，电视设备通过USB2.0子接口向外接扩展设备传输USB伴奏音频信号，外接扩展设备根据该USB伴奏音频信号和用户声音信号生成I2S混音信号，并借助外接功放进行播放，扩大了外接扩展设备的适用范围，减小用户演唱与混音播放之间的延迟，提高了用户体验。
关于上述实施例中的装置，其中各个模块执行操作的具体方式已经在有关该方法的实施例中进行了详细描述，此处将不做详细阐述说明。
图11是根据一示意性实施例示出的电视设备的框图。例如，电视设备1100可以是智能电视。
参照图11，电视设备1100可以包括以下一个或多个组件：处理组件1102，存储器1104，电源组件1106，多媒体组件1108，音频组件1110和输入/输出(I/O)接口1112。
处理组件1102通常控制电视设备1100的整体操作。处理组件1102可以 包括一个或多个处理器1118来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1102可以包括一个或多个模块，便于处理组件102和其他组件之间的交互。例如，处理组件1102可以包括多媒体模块，以方便多媒体组件1108和处理组件1102之间的交互。本实施例中，该处理组件110即为应用处理器AP。
存储器1104被配置为存储各种类型的数据以支持在电视设备1100的操作。这些数据的示例包括用于在电视设备1100上操作的任何应用程序或方法的指令。存储器1104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1106为电视设备1100的各种组件提供电力。电源组件1106可以包括电源管理系统，一个或多个电源，及其他与为电视设备1100生成、管理和分配电力相关联的组件。
多媒体组件1108包括在电视设备1100和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括一个或多个触摸传感器以感测触摸、滑动和触摸面板上的手势。触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与触摸或滑动操作相关的持续时间和压力。在一些实施例中，多媒体组件1108包括一个前置摄像头和/或后置摄像头。当电视设备1100处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1110被配置为输出和/或输入音频信号。本实施例中，该音频组件1110包括一个内置扬声器，用于输出混音信号。
I/O接口1112为处理组件1102和外围接口模块之间提供接口，本实施例中，上述I/O接口可以为USB2.0接口、USB3.0接口、Type C接口或Lightning接口等等。
在示意性实施例中，电视设备1100可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程 逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述信息接收方法。
在示意性实施例中，还提供了一种包括指令的非临时性计算机可读存储介质，例如包括指令的存储器1104，上述指令可由电视设备1100的处理器1118执行以完成上述音频播放方法。例如，非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本申请旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示意性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (36)

  1. 一种音频播放系统，其特征在于，所述音频播放系统包括：麦克风设备、外接扩展设备和电视设备，所述麦克风设备与所述外接扩展设备相连，且所述外接扩展设备和所述电视设备之间通过一个集成物理接口相连，所述电视设备通过所述集成物理接口为所述外接扩展设备供电并进行信号传输；
    所述麦克风设备，用于向所述外接扩展设备传输采集到的用户声音信号；
    所述电视设备，用于通过所述集成物理接口向所述外接扩展设备传输伴奏音频信号；
    所述外接扩展设备，用于对所述用户声音信号和所述伴奏音频信号进行混音处理生成混音信号；通过所述集成物理接口向所述电视设备的功放电路传输所述混音信号；
    所述电视设备，还用于通过内置扬声器播放所述功放电路接收到的所述混音信号。
  2. 根据权利要求1所述的系统，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述电视设备，用于通过所述I2S子接口向所述外接扩展设备传输所述伴奏音频信号；
    所述外接扩展设备，用于通过所述I2S子接口向所述功放电路传输所述混音信号。
  3. 根据权利要求2所述的系统，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
    所述第一管脚用于传输串行时钟SCK信号；
    所述第二管脚用于传输字选择WS信号；
    所述第三管脚用于传输串行数据输入SD IN；
    所述第四管脚用于传输串行数据输出SD OUT；
    所述第五管脚用于传输主时钟MCLK信号、所述SD IN或所述SD OUT中任一信号。
  4. 根据权利要求2或3所述的系统，其特征在于，所述I2S子接口具有打开状态和关闭状态；处于所述关闭状态下，所述I2S子接口禁止传输所述I2S信号；
    所述电视设备，用于检测到通过所述集成物理接口与外部设备相连时，获取所述外部设备的设备标识；
    所述电视设备，还用于若所述设备标识指示所述外部设备是所述外接扩展设备，则将所述I2S子接口设置为所述打开状态；
    所述电视设备，还用于若所述设备标识指示所述外部设备不是所述外接扩展设备，则将所述I2S子接口设置为所述关闭状态。
  5. 根据权利要求2或3所述的系统，其特征在于，
    所述外接扩展设备，还用于通过所述集成物理接口中的所述I2S子接口向所述电视设备的应用处理器AP传输所述混音信号，所述AP用于将所述混音信号存储为录音。
  6. 根据权利要求3所述的系统，其特征在于，
    所述电视设备，还用于通过所述USB2.0子接口并调用USB音频类UAC向所述外接扩展设备传输USB伴奏音频信号；
    所述外接扩展设备，还用于通过桥接芯片将所述USB伴奏音频信号转换为I2S伴奏音频信号；对所述用户声音信号和所述I2S伴奏音频信号进行混音处理；通过所述桥接芯片将I2S混音信号转换为USB混音信号；通过所述USB2.0子接口并调用所述UAC向所述电视设备的应用处理器AP传输所述USB混音信号，所述AP用于将所述USB混音信号存储为录音。
  7. 根据权利要求6所述的系统，其特征在于，所述系统中还包括外接功放，所述外接扩展设备通过线缆输出Line Out接口或数字音频接口SPDIF与所述外接功放相连；
    所述外接扩展设备，还用于通过所述Line Out接口或所述SPDIF向所述外接功放传输所述I2S混音信号；
    所述外接功放，用于播放接收到的所述I2S混音信号。
  8. 一种外接扩展设备，其特征在于，所述外接扩展设备包括：
    混音处理芯片以及与所述混音处理芯片电性相连的集成物理接口；
    所述外接扩展设备通过所述集成物理接口与电视设备相连，并接收所述电视设备的供电和信号传输；
    所述混音处理芯片，用于获取所述电视设备通过所述集成物理接口传输的伴奏音频信号；对麦克风设备采集的用户声音信号以及所述伴奏音频信号进行混音处理；
    所述混音处理芯片，还用于通过所述集成物理接口向所述电视设备的功放电路传输混音信号。
  9. 根据权利要求8所述的外接扩展设备，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述外接扩展设备通过所述I2S接口接收所述伴奏音频信号，并通过所述I2S接口传输所述混音信号。
  10. 根据权利要求9所述的外接扩展设备，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
    所述第一管脚用于传输串行时钟SCK信号；
    所述第二管脚用于传输字选择WS信号；
    所述第三管脚用于传输串行数据输入SD IN；
    所述第四管脚用于传输串行数据输出SD OUT；
    所述第五管脚用于传输主时钟MCLK信号、所述SD IN或所述SD OUT中任一信号。
  11. 根据权利要求10所述的外接扩展设备，其特征在于，所述外接扩展设备还包括桥接芯片；
    所述桥接芯片的一端与所述USB2.0子接口电性相连，所述桥接芯片的另一端与所述混音处理芯片电性相连；
    所述桥接芯片，用于将所述电视设备通过所述USB2.0子接口传输的USB伴奏音频信号转换为I2S伴奏音频信号；向所述混音处理芯片传输所述I2S伴奏音频信号；
    所述混音处理芯片，用于对所述用户声音信号和所述I2S伴奏音频信号进行混音处理；向所述桥接芯片传输I2S混音信号；
    所述桥接芯片，还用于将所述I2S混音信号转换为USB混音信号；通过所述USB2.0子接口向所述电视设备的应用处理器AP传输所述USB混音信号，所述AP用于将所述USB混音信号存储为录音。
  12. 根据权利要求11所述的外接扩展设备，其特征在于，所述外接扩展设备还包括线缆输出Line Out接口或数字音频接口SPDIF；
    所述外接扩展设备通过所述Line Out接口或所述SPDIF向外接功放传输所述I2S混音信号。
  13. 一种音频处理方法，其特征在于，用于外接扩展设备，所述方法包括：
    获取麦克风设备采集的用户声音信号；
    通过与电视设备间的集成物理接口接收所述电视设备传输的伴奏音频信号；
    对所述用户声音信号和所述伴奏音频信号进行混音处理；
    通过所述集成物理接口向所述电视设备的功放电路传输混音信号，所述电视设备用于通过内置扬声器播放所述功放电路接收到的所述混音信号。
  14. 根据权利要求13所述的方法，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述通过与电视设备间的集成物理接口接收所述电视设备传输的伴奏音频信号，包括：
    通过所述I2S子接口接收所述电视设备传输的所述伴奏音频信号；
    所述通过所述集成物理接口向所述电视设备的功放电路传输混音信号，包括：
    通过所述I2S子接口向所述电视设备的功放电路传输所述混音信号。
  15. 根据权利要求14所述的方法，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
    所述第一管脚用于传输串行时钟SCK信号；
    所述第二管脚用于传输字选择WS信号；
    所述第三管脚用于传输串行数据输入SD IN；
    所述第四管脚用于传输串行数据输出SD OUT；
    所述第五管脚用于传输主时钟MCLK信号、所述SD IN或所述SD OUT中任一信号。
  16. 根据权利要求14或15所述的方法，其特征在于，所述方法，还包括：
    通过所述集成物理接口中的所述I2S子接口向所述电视设备的应用处理器AP传输所述混音信号，所述AP用于将所述混音信号存储为录音。
  17. 根据权利要求15所述的方法，其特征在于，所述电视设备通过所述USB2.0子接口并调用USB音频类UAC传输USB伴奏音频信号；
    所述方法，还包括：
    通过所述USB2.0子接口接收所述USB伴奏音频信号；
    通过桥接芯片将所述USB伴奏音频信号转换为I2S伴奏音频信号；
    对所述用户声音信号和所述I2S伴奏音频信号进行混音处理生成I2S混音信号；
    通过所述桥接芯片将所述I2S混音信号转换为USB混音信号；
    通过所述USB2.0子接口并调用所述UAC向所述电视设备的应用处理器AP 传输所述USB混音信号，所述AP用于将所述USB混音信号存储为录音。
  18. 根据权利要求17所述的方法，其特征在于，所述外接扩展设备通过线缆输出Line Out接口或数字音频接口SPDIF与外接功放相连；
    所述方法，还包括：
    通过所述Line Out接口或所述SPDIF向所述外接功放传输所述I2S混音信号，所述外接功放用于播放接收到的所述I2S混音信号。
  19. 一种音频播放方法，其特征在于，用于电视设备，所述方法包括：
    通过与外接扩展设备之间的集成物理接口向所述外接扩展设备传输伴奏音频信号；
    通过所述集成物理接口接收所述外接扩展设备向所述电视设备的功放电路传输的混音信号，所述混音信号是所述外接扩展设备对麦克风设备采集的用户声音信号和所述伴奏音频信号进行混音处理后生成的；
    通过内置扬声器播放所述功放电路接收到的所述混音信号。
  20. 根据权利要求19所述的方法，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述通过与外接扩展设备之间的集成物理接口向所述外接扩展设备传输伴奏音频信号，包括：
    通过所述I2S子接口向所述外接扩展设备传输所述伴奏音频信号。
  21. 根据权利要求20所述的方法，其特征在于，所述I2S子接口具有打开状态和关闭状态；处于所述关闭状态下，所述I2S子接口禁止传输所述I2S信号；
    所述方法，还包括：
    检测到通过所述集成物理接口与外部设备相连时，获取所述外部设备的设备标识；
    若所述设备标识指示所述外部设备是所述外接扩展设备，则将所述I2S子接口设置为所述打开状态；
    若所述设备标识指示所述外部设备不是所述外接扩展设备，则将所述I2S子接口设置为所述关闭状态。
  22. 根据权利要求20或21所述的方法，其特征在于，所述方法，还包括：
    通过应用处理器AP接收所述外接扩展设备传输的所述混音信号；
    将所述混音信号存储为录音。
  23. 根据权利要求20所述的方法，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述方法，还包括：
    通过所述USB2.0子接口并调用USB音频类UAC向所述外接扩展设备传输USB伴奏音频信号；
    通过所述USB2.0子接口接收所述外接扩展设备传输的USB混音信号，所述USB混音信号是所述外接扩展设备通过桥接芯片对I2S混音信号进行转换得到的，所述I2S混音信号是所述外接扩展设备对所述用户声音信号和I2S伴奏音频信号进行混音处理得到的，所述I2S伴奏音频信号是所述外接扩展设备通过所述桥接芯片对所述USB伴奏音频信号进行转换得到的；
    将所述USB混音信号存储为录音。
  24. 一种音频处理装置，其特征在于，所述装置包括：
    第一获取模块，被配置为获取麦克风设备采集的用户声音信号；
    第一接收模块，被配置为通过与电视设备间的集成物理接口接收所述电视设备传输的伴奏音频信号；
    第一处理模块，被配置为对所述用户声音信号和所述伴奏音频信号进行混音处理；
    第一传输模块，被配置为通过所述集成物理接口向所述电视设备的功放电路传输混音信号，所述电视设备用于通过内置扬声器播放所述功放电路接收到的所述混音信号。
  25. 根据权利要求24所述的装置，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述第一接收模块，被配置为通过所述I2S子接口接收所述电视设备传输的所述伴奏音频信号；
    所述第一传输模块，被配置为通过所述I2S子接口向所述电视设备的功放电路传输所述混音信号。
  26. 根据权利要求25所述的装置，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述USB3.0管脚中包括第一管脚、第二管脚、第三管脚、第四管脚和第五管脚；
    所述第一管脚用于传输串行时钟SCK信号；
    所述第二管脚用于传输字选择WS信号；
    所述第三管脚用于传输串行数据输入SD IN；
    所述第四管脚用于传输串行数据输出SD OUT；
    所述第五管脚用于传输主时钟MCLK信号、所述SD IN或所述SD OUT中任一信号。
  27. 根据权利要求25或26所述的装置，其特征在于，所述装置，还包括：
    第二传输模块，被配置为通过所述集成物理接口中的所述I2S子接口向所述电视设备的应用处理器AP传输所述混音信号，所述AP用于将所述混音信号存储为录音。
  28. 根据权利要求26所述的装置，其特征在于，所述电视设备通过所述USB2.0子接口并调用USB音频类UAC传输USB伴奏音频信号；
    所述装置，还包括：
    第二接收模块，被配置为通过所述USB2.0子接口接收所述USB伴奏音频信号
    第一转换模块，被配置为通过桥接芯片将所述USB伴奏音频信号转换为I2S伴奏音频信号；
    第二处理模块，被配置为对所述用户声音信号和所述I2S伴奏音频信号进行 混音处理生成I2S混音信号；
    第二转换模块，被配置为通过所述桥接芯片将所述I2S混音信号转换为USB混音信号；
    第三传输模块，被配置为通过所述USB2.0子接口并调用所述UAC向所述电视设备的应用处理器AP传输所述USB混音信号，所述AP用于将所述USB混音信号存储为录音。
  29. 根据权利要求28所述的装置，其特征在于，所述外接扩展设备通过线缆输出Line Out接口或数字音频接口SPDIF与外接功放相连；
    所述装置，还包括：
    第四传输模块，被配置为通过所述Line Out接口或所述SPDIF向所述外接功放传输所述I2S混音信号，所述外接功放用于播放接收到的所述I2S混音信号。
  30. 一种音频播放装置，其特征在于，所述装置包括：
    第五传输模块，被配置为通过与外接扩展设备之间的集成物理接口向所述外接扩展设备传输伴奏音频信号；
    第三接收模块，被配置为通过所述集成物理接口接收所述外接扩展设备向所述电视设备的功放电路传输的混音信号，所述混音信号是所述外接扩展设备对麦克风设备采集的用户声音信号和所述伴奏音频信号进行混音处理后生成的；
    播放模块，被配置为通过内置扬声器播放所述功放电路接收到的所述混音信号。
  31. 根据权利要求30所述的装置，其特征在于，所述集成物理接口中包括集成电路内置音频I2S子接口，所述I2S子接口用于传输I2S信号；
    所述第五传输模块，被配置为通过所述I2S子接口向所述外接扩展设备传输所述伴奏音频信号。
  32. 根据权利要求31所述的方法，其特征在于，所述I2S子接口具有打开状态和关闭状态；处于所述关闭状态下，所述I2S子接口禁止传输所述I2S信号；
    所述装置，还包括：
    检测模块，被配置为检测到通过所述集成物理接口与外部设备相连时，获取所述外部设备的设备标识；
    第一设置模块，被配置为若所述设备标识指示所述外部设备是所述外接扩展设备，则将所述I2S子接口设置为所述打开状态；
    第二设置模块，被配置为若所述设备标识指示所述外部设备不是所述外接扩展设备，则将所述I2S子接口设置为所述关闭状态。
  33. 根据权利要求31或32所述的装置，其特征在于，所述装置，还包括：
    第四接收模块，被配置为通过应用处理器AP接收所述外接扩展设备传输的所述混音信号；
    第一存储模块，被配置为将所述混音信号存储为录音。
  34. 根据权利要求31所述的装置，其特征在于，所述集成物理接口是通用串行总线3.0USB3.0接口，所述USB3.0接口中的通用串行总线2.0USB2.0管脚用于构成USB2.0子接口，所述USB3.0接口中的USB3.0管脚用于构成所述I2S子接口；
    所述装置，还包括：
    第六传输模块，被配置为通过所述USB2.0子接口并调用USB音频类UAC向所述外接扩展设备传输USB伴奏音频信号；
    第五接收模块，被配置为通过所述USB2.0子接口接收所述外接扩展设备传输的USB混音信号，所述USB混音信号是所述外接扩展设备通过桥接芯片对I2S混音信号进行转换得到的，所述I2S混音信号是所述外接扩展设备对所述用户声音信号和I2S伴奏音频信号进行混音处理得到的，所述I2S伴奏音频信号是所述外接扩展设备通过所述桥接芯片对所述USB伴奏音频信号进行转换得到的；
    第二存储模块，被配置为将所述USB混音信号存储为录音。
  35. 一种音频处理装置，其特征在于，所述装置包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    获取麦克风设备采集的用户声音信号；
    通过与电视设备间的集成物理接口接收所述电视设备传输的伴奏音频信号；
    对所述用户声音信号和所述伴奏音频信号进行混音处理；
    通过所述集成物理接口向所述电视设备的功放电路传输混音信号，所述电视设备用于通过内置扬声器播放所述功放电路接收到的所述混音信号。
  36. 一种音频播放装置，其特征在于，所述装置包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    通过与外接扩展设备之间的集成物理接口向所述外接扩展设备传输伴奏音频信号；
    通过所述集成物理接口接收所述外接扩展设备向所述电视设备的功放电路传输的混音信号，所述混音信号是所述外接扩展设备对麦克风设备采集的用户声音信号和所述伴奏音频信号进行混音处理后生成的；
    通过内置扬声器播放所述功放电路接收到的所述混音信号。
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