CN111246331A - Wireless panorama sound mixing sound earphone - Google Patents
Wireless panorama sound mixing sound earphone Download PDFInfo
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- CN111246331A CN111246331A CN202010027886.4A CN202010027886A CN111246331A CN 111246331 A CN111246331 A CN 111246331A CN 202010027886 A CN202010027886 A CN 202010027886A CN 111246331 A CN111246331 A CN 111246331A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
- H04M1/6041—Portable telephones adapted for handsfree use
- H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
- H04M1/6066—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/62—Constructional arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72406—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by software upgrading or downloading
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72409—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories
- H04M1/72412—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality by interfacing with external accessories using two-way short-range wireless interfaces
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72403—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality
- H04M1/72442—User interfaces specially adapted for cordless or mobile telephones with means for local support of applications that increase the functionality for playing music files
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/033—Headphones for stereophonic communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
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- Circuit For Audible Band Transducer (AREA)
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Abstract
The invention relates to the field of audio equipment, and discloses a wireless panoramic sound mixing earphone.A left end and a right end of a neck hanging part are respectively connected with embedded equipment, a left earplug part and a right earplug part are respectively connected with the embedded equipment at the left end and the right end of the neck hanging part through audio lines, the audio lines are connected with a central microphone, and the left earplug part and the right earplug part respectively comprise a loudspeaker unit positioned at the inner side and a panoramic sound microphone positioned at the outer side; the Bluetooth connection unit of the embedded equipment and the Bluetooth connection unit of the intelligent terminal equipment realize uplink or downlink wireless transmission of audio data; the invention carries out signal processing and stereo sound mixing through the environmental sound signals collected by the panoramic sound microphone and the central microphone, the sound signals of a wearer and the music stream signals transmitted by the intelligent terminal device, monitors the stereo signals in real time on the earphone and provides a high-quality audio signal wireless transmission function.
Description
Technical Field
The invention relates to the field of audio equipment, in particular to a wireless panoramic sound mixing earphone.
Background
With the continuous upgrading and upgrading of mobile terminals such as smart phones, portable computers, various music electronic devices and the like, the mobile terminals have become indispensable electronic products in people's lives, wherein the most important functions are communication and listening to high-quality music, and more users hope to listen to music while performing other activities, or avoid causing sound interference to other people as much as possible, so that the users can listen to music by using earphones.
At present, the existing bluetooth headset listens to music, the bluetooth headset can wirelessly communicate with a mobile terminal storing music through bluetooth, and the convenience is slightly stronger compared with the traditional wired headset, but the transmission of an audio signal between two headsets of the existing bluetooth headset is still in a wired mode, for example, a common earmuff type bluetooth headset.
At present, chinese patent application No. CN106209130B discloses a wireless headset and a method for outputting audio data by using the wireless headset, including a main headset and an auxiliary headset, where the main headset includes an audio receiving module for wirelessly obtaining audio data; the first audio processing module is used for extracting a first sound channel signal corresponding to the main headset from the audio data and sending the first sound channel signal to the main headset loudspeaker unit for playing; and extracting a second channel signal corresponding to the auxiliary headset from the audio data, and transmitting the second channel signal to the auxiliary headset in a wireless manner based on the carrier signal meeting the preset condition.
Above-mentioned technical scheme can utilize wireless mode transmission audio signal between two headsets of same pair of earphone, does not influence user's use when conveniently carrying, and has avoided loaded down with trivial details adjustment operation, nevertheless has following defect: the bluetooth linkage unit of this earphone can't go upward high-quality audio transmission to intelligent terminal, also can't carry out real-time audio mixing with the microphone signal of collection simultaneously to and the ear in local returns and monitors etc. for this, need to develop a wireless panorama sound mixing earphone urgently.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a wireless panoramic sound mixing earphone which performs signal processing and stereo sound mixing through an environmental sound signal and a wearer sound signal collected by a panoramic sound microphone and a central microphone and a music stream signal transmitted by intelligent terminal equipment in an uplink manner, monitors stereo signals in real time on the earphone and provides a high-quality audio signal wireless transmission function.
The technical purpose of the invention is realized by the following technical scheme:
a wireless panoramic sound mixing earphone comprises a left earplug part, a right earplug part and a hanging neck part, wherein the end part of the hanging neck part is connected with embedded equipment, the left earplug part comprises a left loudspeaker unit positioned at the inner side and a left panoramic sound microphone positioned at the outer side, the right earplug part comprises a right loudspeaker unit positioned at the inner side and a right panoramic sound microphone positioned at the outer side, and a central microphone is connected on an audio line between the embedded equipment and the left earplug part or the right earplug part; the embedded equipment comprises a Bluetooth connecting unit, a signal processing and sound mixing unit, an audio analog-to-digital converter, an audio digital-to-analog converter, an A2DP decoder and an audio encoder, wherein a multi-channel or single-channel uplink and downlink transmission audio signal is adopted between the Bluetooth connecting unit of the embedded equipment and a Bluetooth module of the intelligent terminal equipment; the system comprises a central microphone, an audio analog-to-digital converter, a signal processing and sound mixing unit, a left panoramic sound microphone, a right panoramic sound microphone, a left panoramic sound microphone, a right panoramic sound microphone; the method comprises the steps that a streaming media playing software installed on intelligent terminal equipment transmits music stream signals to a Bluetooth module of the intelligent terminal equipment, the Bluetooth module of the intelligent terminal equipment sends A2DP music stream signals to a Bluetooth connecting unit of embedded equipment in an A2DP music stream mode, the Bluetooth connecting unit receives the A2DP music stream signals and sends the music stream signals to an A2DP decoder, and the music stream signals decoded by the A2DP decoder are sent to a signal processing and sound mixing unit; the signal processing and sound mixing unit is used for respectively processing a sound signal of a wearer, an environment sound signal and a music flow signal and performing stereo sound mixing, the stereo sound mixing signal after the sound mixing processing is sent to the audio encoder and the audio digital-to-analog converter, the stereo sound mixing signal is sent to the left loudspeaker unit and the right loudspeaker unit after being subjected to digital-to-analog conversion by the audio digital-to-analog converter, the stereo sound mixing signal is sent to the Bluetooth connecting unit after being encoded by the audio encoder, the Bluetooth connecting unit of the embedded equipment transmits the stereo sound mixing signal to the Bluetooth module of the intelligent terminal equipment in an uplink mode, and the stereo sound mixing signal received by the Bluetooth module is sent to audio data receiving and processing software.
The invention is further configured that the signal processing of the sound signal of the wearer by the signal processing and mixing unit is reverberation, equalization, gain or tone adjustment, the signal processing of the environmental sound signal by the signal processing and mixing unit is equalization, gain, and the signal processing of the music stream signal by the signal processing and mixing unit is human sound elimination, musical instrument sound elimination or equalization.
The invention is further configured that the mixing relation of the stereo mixing of the sound signal of the wearer, the environment sound signal and the music stream signal by the signal processing and mixing unit is as follows: [ OutL, OutR ] = [ g 1L. MicL + g 2L. MicC + g 3L. MusicL, g 1R. MicR + g 2R. MicC + g 3R. MusicR ], where MicL and MicR are ambient sound signals collected by left and right panoramic sound microphones, respectively, MicC is a wearer sound signal collected by a center microphone, MusicL and MusicR are left and right music channel signals of a music stream signal, OutL and OutR are left and right channel signals of an output stereo mix signal, respectively, g1L, g2L, g3L, g1R, g2R and g3R are mix coefficients, and the ambient sound signal, the wearer sound signal and the left and right music channel signals of the music stream signal are original signals or processed signals.
The invention is further provided that the mixing coefficients g1L, g2L, g3L, g1R, g2R and g3R are all greater than or equal to 0 and less than or equal to 1.
The invention is further set that the sampling frequency of the uplink and downlink transmission audio signals between the Bluetooth connecting unit of the embedded device and the Bluetooth module of the intelligent terminal device is more than 16khz, and the number of channels is more than or equal to 2.
The invention is further set that audio signals are transmitted between the Bluetooth connecting unit of the embedded device and the Bluetooth module of the intelligent terminal device in an uplink and downlink mode based on the HFP protocol, the sampling frequency is 16khz or 8khz, the number of channels is single channel, and the recording transmission function of the call is realized.
The invention is further arranged that the A2DP decoder and the audio encoder have full-band stereo encoding, and the encoding and decoding mode is selected from SBC, OPUS, Apt-X or AAC.
The invention is further set that the intelligent terminal equipment is a mobile phone with a Bluetooth module, a tablet computer, a notebook computer, a PC, a network set-top box, a television, and an ios, android, linux, windows and mac intelligent system; the central microphone, the left loudspeaker unit, the right loudspeaker unit, the left panoramic sound microphone, the right panoramic sound microphone and the embedded equipment are powered by a rechargeable battery, and a charging end of the rechargeable battery is connected with a USB interface or a contact interface.
The invention is further configured that A2DP connection is established between the Bluetooth module of the intelligent terminal device and the Bluetooth connection unit of the embedded device, the music stream signal output by the streaming media playing software of the intelligent terminal device is sent to the Bluetooth module, and the Bluetooth module of the intelligent terminal device transmits the A2DP music stream signal to the Bluetooth connection unit of the embedded device in a downlink manner.
The invention is further set up that a Bluetooth module of the intelligent terminal device is connected with a Bluetooth connecting unit of the embedded device through SWISS, the Bluetooth connecting unit transmits stereo audio mixing signals to the Bluetooth module of the intelligent terminal device in an uplink mode, and the audio data receiving and processing software receives the stereo audio mixing signals and then performs data decoding, data processing, data presentation or data internet transmission.
In conclusion, the beneficial technical effects of the invention are as follows:
1. according to the invention, a stereo audio mixing signal is transmitted to a Bluetooth module of intelligent terminal equipment in an uplink manner through a Bluetooth connecting unit of embedded equipment, and audio data receiving and processing software receives the stereo audio mixing signal and then performs data decoding, data processing, data presentation or data internet transmission; the music streaming signal output by the streaming media playing software of the intelligent terminal device is sent to the Bluetooth module, the Bluetooth module of the intelligent terminal device transmits an A2DP music streaming signal to the Bluetooth connecting unit of the embedded device in a downlink mode, the environmental sound signal and the sound signal of a wearer collected by the panoramic sound microphone and the central microphone and the music streaming signal transmitted by the intelligent terminal device in an uplink mode are subjected to signal processing and stereo sound mixing, the stereo signal is monitored in real time through the earphone, and a high-quality audio signal wireless transmission function is provided.
2. A2DP connection is established between a Bluetooth module of the intelligent terminal device and a Bluetooth connecting unit of the embedded device, SWISS connection is established between the Bluetooth module of the intelligent terminal device and the Bluetooth connecting unit of the embedded device, multi-channel uplink and downlink transmission audio signals are adopted between the Bluetooth connecting unit of the embedded device and the Bluetooth module of the intelligent terminal device, the transmitted audio signals are stereo signals with the number of channels being more than or equal to 2, the sampling frequency is more than 16khz, and wireless transmission of high-quality audio is provided.
3. The Bluetooth connecting unit of the embedded equipment transmits stereo audio mixing signals to the Bluetooth module of the intelligent terminal equipment in an uplink mode, the stereo audio mixing signals received by the Bluetooth module are sent to audio data receiving and processing software installed on the intelligent terminal equipment for processing, and the audio data receiving and processing software receives the stereo audio mixing signals and then performs data decoding, data processing, data presentation or data internet transmission, so that the purposes of network entertainment, education, conferences and other applications are achieved.
Drawings
FIG. 1 is an overall schematic view of the present invention;
fig. 2 is a schematic block diagram of the system of the present invention.
Reference numerals: 1. a left earplug portion; 2. a right ear plug portion; 3. hanging the neck; 4. an embedded device; 41. a Bluetooth connection unit; 42. a signal processing and mixing unit; 43. an audio analog-to-digital converter; 44. an audio digital-to-analog converter; 45. a2DP decoder, 46, audio encoder; 5. an audio line; 6. a left horn unit; 7. a right horn unit; 8. an intelligent terminal device; 81. a Bluetooth module; 9. a center microphone; 10. a left panoramic acoustic microphone; 11. a right panoramic acoustic microphone.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention discloses a wireless panoramic sound mixing earphone, which comprises a left earplug part 1, a right earplug part 2 and a neck hanging part 3, wherein the end part of the neck hanging part 3 is connected with an embedded device 4, the left earplug part 1 comprises a left loudspeaker unit 6 positioned at the inner side and a left panoramic sound microphone 10 positioned at the outer side, the right earplug part 2 comprises a right loudspeaker unit 7 positioned at the inner side and a right panoramic sound microphone 11 positioned at the outer side, and a central microphone 9 is connected on an audio line 5 between the embedded device 4 and the left earplug part 1 or the right earplug part 2; the embedded device 4 comprises a bluetooth connection unit 41, a signal processing and sound mixing unit 42, an audio analog-to-digital converter 43, an audio digital-to-analog converter 44, an A2DP decoder 45 and an audio encoder 46, wherein multiple channels of uplink and downlink transmission audio signals are adopted between the bluetooth connection unit 41 of the embedded device 4 and the bluetooth module 81 of the intelligent terminal device 8, the sampling frequency of the uplink and downlink transmission audio signals between the bluetooth connection unit 41 of the embedded device 4 and the bluetooth module 81 of the intelligent terminal device 8 is greater than 16khz, and the number of channels is greater than or equal to 2; the wearer's voice signal collected by the central microphone 9 and the environmental voice signal collected by the left and right panoramic microphones 11 are sent to the audio analog-to-digital converter 43, and the wearer's voice signal and the environmental voice signal are sent to the signal processing and sound mixing unit 42 after being subjected to analog-to-digital conversion by the audio analog-to-digital converter 43; the streaming media playing software installed on the intelligent terminal device 8 transmits music stream signals to the bluetooth module 81 of the intelligent terminal device 8, the bluetooth module 81 of the intelligent terminal device 8 establishes A2DP connection with the bluetooth connection unit 41 of the embedded device 4, the bluetooth module 81 of the intelligent terminal device 8 sends the A2DP music stream signals to the bluetooth connection unit 41 of the embedded device 4 in an A2DP music stream mode, the bluetooth connection unit 41 receives the A2DP music stream signals and sends the music stream signals to the A2DP decoder 45, and the music stream signals decoded by the A2DP decoder 45 are sent to the signal processing and mixing unit 42; the signal processing and sound mixing unit 42 is configured to perform signal processing and stereo sound mixing on a sound signal of a wearer, an environmental sound signal and a music stream signal, respectively, send a stereo sound mixing signal after the sound mixing processing to the audio encoder 46 and the audio digital-to-analog converter 44, send the stereo sound mixing signal to the left speaker unit 6 and the right speaker unit 7 after digital-to-analog conversion by the audio digital-to-analog converter 44, send the stereo sound mixing signal to the bluetooth connection unit 41 after being encoded by the audio encoder 46, the bluetooth connection unit 41 of the embedded device 4 transmits the stereo sound mixing signal to the bluetooth module 81 of the intelligent terminal device 8 in an uplink manner, and send the stereo sound mixing signal received by the bluetooth module 81 to audio data receiving and processing software installed in the intelligent terminal.
The signal processing of the signal processing and mixing unit 42 on the sound signal of the wearer is reverberation, equalization, gain or tone adjustment, the signal processing of the signal processing and mixing unit 42 on the environmental sound signal is equalization and gain, and the signal processing of the signal processing and mixing unit 42 on the music stream signal is human sound elimination, musical instrument sound elimination or equalization; the mixing relationship of the signal processing and mixing unit 42 for stereo mixing of the wearer's sound signal, the ambient sound signal and the music stream signal is: [ OutL, OutR ] = [ g1L x MicL + g2L x MicC + g3L x MucL, g1R x MicR + g2R x MicC + g3R x MusicR ], where MicL and MicR are the ambient sound signals collected by the left and right panoramic sound microphones 10 and 11, respectively, MicC is the wearer sound signal collected by the center microphone 9, MusicL and MusicR are the left and right music channel signals of the music stream signal, OutL and OutR are the left and right channel signals of the output stereo mix signal, respectively, g1L, g2L, g3L, g1R, g2R and g3R are each a mix coefficient, g1L, 39g 2 g 38, L, g1 g3, R g3, and g3 is equal to or greater than or equal to or less than 0, and equal to or less than 5960; the ambient sound signal, the wearer sound signal and the left and right music channel signals of the music stream signal are all original signals or processed signals.
As shown in fig. 2, the codec scheme of the A2DP decoder 45 and the audio encoder 46 is full-band stereo encoding, and the codec scheme is selected from SBC, OPUS, Apt-X, and AAC. The intelligent terminal device 8 is a mobile phone, a tablet computer, a notebook computer, a PC, a network set-top box, a television, an ios, android, linux, windows and mac intelligent system with a Bluetooth module 81; the central microphone 9, the left loudspeaker unit 6, the right loudspeaker unit 7, the left panoramic sound microphone 10, the right panoramic sound microphone 11 and the embedded device 4 are powered by a rechargeable battery, and the charging end of the rechargeable battery is connected with a USB interface or a contact interface.
The bluetooth module 81 of the intelligent terminal device 8 establishes SWISS connection with the bluetooth connection unit 41 of the embedded device 4, the bluetooth connection unit 41 transmits stereo audio mixing signals to the bluetooth module 81 of the intelligent terminal device 8 in an uplink manner, and the audio data receiving and processing software receives the stereo audio mixing signals and then performs data decoding, data processing, data presentation or data internet transmission.
In addition, the earphone of this embodiment also supports the conventional voice scene, and audio signals are transmitted between the bluetooth connection unit 41 of the embedded device 4 and the bluetooth module 81 of the intelligent terminal device 8 in an uplink and downlink manner based on the HFP protocol, the sampling frequency is 16khz or 8khz, and the number of channels is a single channel, so that the recording transmission function of the call is realized.
The working principle of the embodiment is as follows:
the central microphone 9 collects a sound signal of a wearer, the left and right panoramic sound microphones 11 collect an environmental sound signal, the bluetooth connection unit 41 of the embedded device 4 transmits A2DP music stream signal from the bluetooth module 81 of the intelligent terminal device 8, the signal processing and mixing unit 42 respectively performs signal processing and stereo mixing on the sound signal of the wearer, the environmental sound signal and the music stream signal, the signal processing and mixing unit 42 performs reverberation, equalization, gain or tone adjustment on the signal of the sound signal of the wearer, the signal processing and mixing unit 42 performs equalization and gain on the signal of the environmental sound signal, and the signal processing and mixing unit 42 performs human sound cancellation, musical instrument sound cancellation or equalization on the signal of the music stream signal; the signal processing and mixing unit 42 performs stereo mixing on the wearer sound signal, the environment sound signal, and the music stream signal according to the following mixing relation: [ out, out ] = [ g1L × MicL + g2L × MicC + g3L × multisicl, g1R × MicR + g2R × MicC + g3R × MusicR ], sending the stereo mixing signal after mixing processing to the audio encoder 46 and the audio digital-to-analog converter 44, sending the stereo mixing signal after digital-to-analog conversion by the audio digital-to-analog converter 44 to the left loudspeaker unit 6 and the right loudspeaker unit 7, and realizing local real-time playing of the stereo mixing signal; the stereo audio mixing signal encoded by the audio encoder 46 is sent to the bluetooth connection unit 41, the bluetooth connection unit 41 of the embedded device 4 transmits the stereo audio mixing signal to the bluetooth module 81 of the intelligent terminal device 8 in an uplink manner, the stereo audio mixing signal received by the bluetooth module 81 is sent to audio data receiving and processing software installed in the intelligent terminal device 8 for processing, and the audio data receiving and processing software receives the stereo audio mixing signal and then performs data decoding, data processing, data presentation or data internet transmission, so that the purposes of network entertainment, education, conferences and other applications are achieved.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. The utility model provides a wireless panorama sound mixing of sound earphone, includes left earplug portion (1), right earplug portion (2), hangs neck portion (3), characterized by: the end part of the neck hanging part (3) is connected with an embedded device (4), the left earplug part (1) comprises a left loudspeaker unit (6) positioned on the inner side and a left panoramic sound microphone (10) positioned on the outer side, the right earplug part (2) comprises a right loudspeaker unit (7) positioned on the inner side and a right panoramic sound microphone (11) positioned on the outer side, and a central microphone (9) is connected on an audio line (5) between the embedded device (4) and the left earplug part (1) or the right earplug part (2); the embedded device (4) comprises a Bluetooth connecting unit (41), a signal processing and mixing unit (42), an audio analog-to-digital converter (43), an audio digital-to-analog converter (44), an A2DP decoder (45) and an audio encoder (46), wherein a multichannel or single-channel uplink and downlink transmission audio signal is adopted between the Bluetooth connecting unit (41) of the embedded device (4) and a Bluetooth module (81) of the intelligent terminal device (8); the sound signals of a wearer collected by the central microphone (9) and the environmental sound signals collected by the left and right panoramic sound microphones (11) are sent to the audio analog-to-digital converter (43), and the sound signals of the wearer and the environmental sound signals are respectively sent to the signal processing and sound mixing unit (42) after being subjected to analog-to-digital conversion by the audio analog-to-digital converter (43); the method comprises the steps that streaming media playing software installed on intelligent terminal equipment (8) transmits music stream signals to a Bluetooth module (81) of the intelligent terminal equipment, the Bluetooth module (81) of the intelligent terminal equipment (8) sends the A2DP music stream signals to a Bluetooth connecting unit (41) of embedded equipment (4) in an A2DP music stream mode, the Bluetooth connecting unit (41) receives the A2DP music stream signals and sends the A2DP music stream signals to an A2DP decoder (45), and the music stream signals decoded by the A2DP decoder (45) are sent to a signal processing and mixing unit (42); the signal processing and mixing unit (42) is used for respectively carrying out signal processing and stereo mixing on a sound signal of a wearer, an environment sound signal and a music flow signal, the stereo mixing signal after the mixing processing is sent to the audio coder (46) and the audio digital-to-analog converter (44), the stereo mixing signal is sent to the left loudspeaker unit (6) after the digital-to-analog conversion of the audio digital-to-analog converter (44), the stereo audio mixing signal is coded by the audio coder (46) and then sent to the Bluetooth connecting unit (41) through the right loudspeaker unit (7), the Bluetooth connecting unit (41) of the embedded device (4) transmits the stereo audio mixing signal to the Bluetooth module (81) of the intelligent terminal device (8) in an uplink mode, and the stereo audio mixing signal received by the Bluetooth module (81) is sent to the audio data receiving and processing software installed in the intelligent terminal device (8) to be processed.
2. The wireless panoramic audio mixing headphone of claim 1, characterized in that: the signal processing of the signal processing and mixing unit (42) to the sound signal of the wearer is reverberation, equalization, gain or tone adjustment, the signal processing of the signal processing and mixing unit (42) to the environment sound signal is equalization and gain, and the signal processing of the signal processing and mixing unit (42) to the music stream signal is human sound elimination, musical instrument sound elimination or equalization.
3. The wireless panoramic audio mixing headphone as claimed in claim 2, wherein: the signal processing and mixing unit (42) performs stereo mixing on the sound signal of the wearer, the environment sound signal and the music flow signal according to a mixing relation: [ OutL, OutR ] = [ g 1L. MicL + g 2L. MicC + g 3L. MucR, g 1R. MicR + g 2R. MicC + g 3R. MusicR ], where MicL and MicR are the ambient sound signals collected by left and right panoramic sound microphones (10), (11), respectively, MicC is the wearer's sound signal collected by a center microphone (9), MusicL and MusicR are the left and right music channel signals of a music stream signal, OutL and OutR are the left and right channel signals of an output stereo mix signal, respectively, g1L, g2L, g3L, g1R, g2R and g3R are the mix coefficients, and the ambient sound signal, the wearer's sound signal and the left and right channel signals of the music stream signal are the original or post-processing music signals.
4. The wireless panoramic audio mixing headphone of claim 3, characterized in that: and the mixing coefficients g1L, g2L, g3L, g1R, g2R and g3R are all more than or equal to 0 and less than or equal to 1.
5. The wireless panoramic audio mixing headphone of claim 1, characterized in that: the sampling frequency of uplink and downlink transmission audio signals between the Bluetooth connecting unit (41) of the embedded device (4) and the Bluetooth module (81) of the intelligent terminal device (8) is greater than 16khz, and the number of channels is greater than or equal to 2.
6. The wireless panoramic audio mixing headphone of claim 1, characterized in that: audio signals are transmitted between the Bluetooth connecting unit (41) of the embedded device (4) and the Bluetooth module (81) of the intelligent terminal device (8) in an uplink and downlink mode based on an HFP protocol, the sampling frequency is 16khz or 8khz, the number of channels is single, and the recording transmission function of conversation is achieved.
7. The wireless panoramic audio mixing headphone of claim 1, characterized in that: the A2DP decoder (45) and the audio encoder (46) adopt full-band stereo coding, and the coding and decoding modes are selected from SBC, OPUS, Apt-X or AAC.
8. The wireless panoramic audio mixing headphone of claim 1, characterized in that: the intelligent terminal device (8) is a mobile phone, a tablet computer, a notebook computer, a PC, a network set-top box, a television and an ios, android, linux, windows and mac intelligent system with a Bluetooth module (81); the central microphone (9), the left loudspeaker unit (6), the right loudspeaker unit (7), the left panoramic sound microphone (10), the right panoramic sound microphone (11) and the embedded equipment (4) are powered by a rechargeable battery, and the charging end of the rechargeable battery is connected with a USB interface or a contact interface.
9. The wireless panoramic audio mixing earphone according to any one of claims 1 to 8, wherein: an A2DP connection is established between the Bluetooth module (81) of the intelligent terminal device (8) and the Bluetooth connecting unit (41) of the embedded device (4), the music stream signal output by the streaming media playing software of the intelligent terminal device (8) is sent to the Bluetooth module (81), and the Bluetooth module (81) of the intelligent terminal device (8) transmits the A2DP music stream signal to the Bluetooth connecting unit (41) of the embedded device (4) in a downlink mode.
10. The wireless panoramic audio mixing earphone according to any one of claims 1 to 8, wherein: the Bluetooth module (81) of the intelligent terminal device (8) is connected with the Bluetooth connecting unit (41) of the embedded device (4) through SWISS, the Bluetooth connecting unit (41) transmits stereo audio mixing signals to the Bluetooth module (81) of the intelligent terminal device (8) in an uplink mode, and the audio data receiving and processing software receives the stereo audio mixing signals and then performs data decoding, data processing, data presentation or data internet transmission.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010027886.4A CN111246331A (en) | 2020-01-10 | 2020-01-10 | Wireless panorama sound mixing sound earphone |
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| CN202010027886.4A CN111246331A (en) | 2020-01-10 | 2020-01-10 | Wireless panorama sound mixing sound earphone |
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| CN111246331A true CN111246331A (en) | 2020-06-05 |
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| CN202010027886.4A Pending CN111246331A (en) | 2020-01-10 | 2020-01-10 | Wireless panorama sound mixing sound earphone |
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| WO2023184661A1 (en) * | 2022-03-29 | 2023-10-05 | 王丰硕 | Wireless earbuds |
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