CN112714346A - Live broadcast system and audio signal transmission system and equipment thereof - Google Patents
Live broadcast system and audio signal transmission system and equipment thereof Download PDFInfo
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- CN112714346A CN112714346A CN202011584977.4A CN202011584977A CN112714346A CN 112714346 A CN112714346 A CN 112714346A CN 202011584977 A CN202011584977 A CN 202011584977A CN 112714346 A CN112714346 A CN 112714346A
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- 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
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- 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]
- H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
- H04N21/42206—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor characterized by hardware details
- H04N21/42221—Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
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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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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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
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- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Human Computer Interaction (AREA)
- Circuit For Audible Band Transducer (AREA)
Abstract
The invention discloses a live broadcast system and an audio signal transmission system and equipment thereof, wherein the audio signal transmission system comprises: the receiving end module and the transmitting end module are of split structures; the receiving end module includes: the terminal interface is in wired connection with a terminal for live broadcasting; a processor connected between the terminal interface and the first wireless communication chip; the transmitting end module includes: the headset interface is in wired connection with a headset for live broadcasting; the second wireless communication chip is used for transmitting audio signals with the headset interface; the first wireless communication chip and the second wireless communication chip carry out wireless data transceiving through a private protocol with transmission efficiency greater than that of a standard protocol. The audio data transmission quality is improved in the live broadcasting process, and the audio transmission efficiency is improved.
Description
Technical Field
The invention relates to the technical field of live broadcast audio signal processing, in particular to a live broadcast system and an audio signal transmission system and equipment thereof.
Background
With the development of internet entertainment, various types of live broadcast (performances, with goods and the like) are more and more favored by users, and therefore, an external live broadcast sound card matched for live broadcast is produced. The external live sound card is generally provided with rich audio input and output interfaces, and functions of earphone monitoring, microphone input, accompaniment input, mobile phone input/output and the like are provided. Through the external live sound card, the live operation is greatly facilitated, and the user experience is improved. In conventional solutions, the wireless communication device sound card of the anchor configuration is usually wired, however, this may limit the active range of the anchor. In order to solve the problem that the use is inconvenient due to excessive connecting wires of the sound card, wireless communication equipment for live broadcasting, such as a wireless sound card, also appears in the prior art.
For example, to avoid complicated connection lines, chinese patent with publication number CN207475842U discloses an external wireless live broadcast sound card, which performs wireless data transceiving with a sound pick-up, and is divided into a sound card host and a sound card slave, wherein the sound card host is wirelessly connected with the sound pick-up and the mobile phone terminal slave respectively, thereby avoiding inconvenience caused by wired connection and improving convenience of anchor broadcast.
However, in terms of live quality, it sacrifices live sound quality in pursuit of convenience of anchor. Specifically, it brings about the following problems:
(1) compared with a traditional wired mode, the wireless communication mode can reduce the transmission efficiency, so that great time delay often exists when the headset and the like communicate with a mobile phone end, and a blocking phenomenon is easily caused;
(2) the arrangement of a plurality of wireless nodes causes mutual interference between internal wireless communications, and increases the probability of the wireless nodes being interfered by external wireless signals.
Therefore, in the live broadcast process, on the premise of how to ensure the transmission quality of the audio signal, improving the convenience of the anchor becomes an urgent technical problem to be solved.
Disclosure of Invention
Based on the above situation, the present invention is directed to a live broadcasting system, an audio signal transmission system and an audio signal transmission device thereof, so as to improve the convenience of a main broadcast and improve the live broadcasting effect on the premise of how to ensure the transmission quality of an audio signal in the live broadcasting process.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, an embodiment of the present invention discloses a live audio signal transmission system, including:
the receiving end module and the transmitting end module are of split structures; the receiving end module includes: the terminal interface is in wired connection with a live broadcast terminal and is used for receiving and transmitting audio signals with the terminal; the first wireless communication chip is used for receiving and transmitting audio signals with the transmitting end module; the processor is connected between the terminal interface and the first wireless communication chip; the processor is used for processing the audio signal received by the first wireless communication chip and then transmitting the processed audio signal to the terminal interface, and processing the audio signal received by the terminal interface and then transmitting the processed audio signal to the first wireless communication chip; the transmitting end module includes: the headset interface is in wired connection with a headset for live broadcasting and is used for receiving and transmitting audio signals with the headset; the second wireless communication chip is used for transmitting audio signals with the headset interface; the second wireless communication chip sends the audio signal collected by the headset interface to the first wireless communication chip and transmits the audio signal received from the first wireless communication chip to the headset interface; the first wireless communication chip and the second wireless communication chip carry out wireless data transceiving through a private protocol with transmission efficiency greater than that of a standard protocol.
Optionally, the first wireless communication chip is a bluetooth communication chip, and the second wireless communication chip is a bluetooth communication chip.
Optionally, the method further comprises: the paired matching keys are respectively arranged on the transmitting end module and the receiving end module and are used for matching the first wireless communication chip and the second wireless communication chip; the volume key is arranged at the transmitting end module; and the power adjusting key is arranged at the receiving end module and used for adjusting the transmitting power and the receiving power of the first wireless communication chip.
Optionally, the terminal interface is a digital interface, and the terminal interface is connected to the processor.
Optionally, the terminal interface is an analog interface; the terminal interface is connected with the processor through a first digital-to-analog converter and a first analog-to-digital converter respectively.
Optionally, the headset interface includes a microphone interface and an earphone interface, the microphone interface is a digital interface, and the earphone interface is an analog interface; the microphone interface is connected to the second wireless communication chip to directly provide digital signals to the second wireless communication chip; the earphone interface is connected to the second wireless communication chip through a second digital-to-analog converter, and the second digital-to-analog converter performs DA conversion on digital signals output by the second wireless communication chip and then transmits the digital signals to the earphone interface.
Optionally, the headset interface includes a microphone interface and an earphone interface, the microphone interface is an analog interface, and the earphone interface is an analog interface; the microphone interface is connected to a second wireless communication chip through a second analog-to-digital converter, and the second analog-to-digital converter performs AD conversion on an analog signal output by the microphone interface and then transmits the analog signal to the second wireless communication chip; the earphone interface is connected to the second wireless communication chip through a second digital-to-analog converter, and the second digital-to-analog converter performs DA conversion on digital signals output by the second wireless communication chip and then transmits the digital signals to the earphone interface.
In a second aspect, an embodiment of the present invention discloses a live broadcast device, including:
a first housing; a second housing; and the live audio signal transmission system disclosed in the first aspect above; the receiving end module is arranged in the first shell to form first equipment, and the transmitting end module is arranged in the second shell to form second equipment.
In a third aspect, an embodiment of the present invention discloses a live broadcast system, including:
the second aspect discloses a live device and a headset.
Optionally, the live broadcasting system further includes a terminal for live broadcasting.
[ PROBLEMS ] the present invention
According to the live broadcasting system and the audio signal transmission equipment thereof disclosed by the embodiment of the invention, the receiving end module and the transmitting end module are of a split structure, wherein the receiving end module is in wired connection with a terminal for live broadcasting through a terminal interface, and the transmitting end module is in wired connection with a headset through a headset interface, so that the audio signal can be transmitted between the receiving end module and the terminal quickly and with high quality, and the audio signal can be transmitted between the transmitting end module and the headset quickly and with high quality; the first wireless communication chip of the receiving end module and the second wireless communication chip of the transmitting end module receive and transmit wireless data through a private protocol with transmission efficiency greater than that of a standard protocol, so that audio signals can be transmitted between the receiving end module and the transmitting end module quickly and with high quality. Therefore, the audio signal can be rapidly transmitted with high quality between the headset for live broadcasting and the live broadcasting terminal. That is, the audio data transmission quality is improved in the live broadcast process, and the audio transmission efficiency is improved.
In addition, the live broadcast audio signal transmission system disclosed by the embodiment of the invention improves the convenience of the anchor or the user because the anchor or the user only needs to carry the transmitting terminal module and does not need to carry the receiving terminal module and the live broadcast terminal. In summary, the live audio signal transmission circuit disclosed in the embodiment of the present invention improves the convenience of the anchor on the premise of ensuring the quality of the live audio.
Moreover, the processor and the like are arranged at the receiving end, so that on one hand, the structure of the transmitting end module can be greatly simplified, namely, the transmitting end module is exquisite and small in structure and convenient to carry by the anchor; on the other hand, in the case that the transmitting end transmits a signal wirelessly to the receiving end with interference, the processor of the receiving end may process (compensate) the interfered data, for example, and the receiving end is connected to the live terminal by wire, so that the compensated signal can be stably transmitted to the live terminal.
Other advantages of the present invention will be described in the detailed description, and those skilled in the art will understand the technical features and technical solutions presented in the description.
Drawings
Embodiments according to the present invention will be described below with reference to the accompanying drawings. In the figure:
fig. 1 is a schematic structural diagram of a live broadcast system disclosed in this embodiment;
fig. 2 is a schematic circuit diagram of a live audio signal transmission system disclosed in this embodiment;
fig. 3A and fig. 3B are schematic circuit structures of a live audio signal transmission system according to a first embodiment of the present disclosure, where fig. 3A illustrates that a microphone interface 21a is an analog interface, and fig. 3B illustrates that the microphone interface 21a is a digital interface;
fig. 4A and fig. 4B are schematic circuit structures of a live audio signal transmission system according to a second embodiment of the present disclosure, where fig. 4A illustrates that the microphone interface 21a is an analog interface, and fig. 4B illustrates that the microphone interface 21a is a digital interface.
Detailed Description
In order to improve the transmission quality of audio data and improve the audio transmission efficiency in the live broadcast process on the premise of being convenient for the anchor to carry the device, the present embodiment discloses a live broadcast audio signal transmission system, please refer to fig. 1, which is a schematic structural diagram of the live broadcast system disclosed in the present embodiment. In this embodiment, live broadcasting refers to a scene in which a user/anchor performs audio and video interaction based on a network platform, and the specific scene may be, for example, live broadcasting performance, live broadcasting tape goods, and the like.
Referring to fig. 1, the live broadcasting system includes: live audio signal transmission system 100, a headset 200 for live broadcasting, and a terminal 300 for live broadcasting, where the live audio signal transmission system 100 may also be called as a live broadcasting device or a sound card, and in a specific embodiment:
the headset 200 may be an existing headset with audio capturing and receiving functions, or may be a specially-configured headset. In this embodiment, the headset 200 is a wired headset. In particular implementations, the headset 200 may be two separate components, i.e., may be a single microphone and earphone; or, an earphone integrated with a microphone.
The terminal 300 may be an existing mobile terminal or a dedicated terminal with a live networking function. In an embodiment, the terminal 300 communicates with the live audio signal transmission system 100 via a wired connection.
Referring to fig. 1, a live audio signal transmission system 100 disclosed in the present embodiment includes: the receiving end module 110 and the transmitting end module 120, wherein the receiving end module 110 and the transmitting end module 120 are of a split structure. Specifically, the receiving end module 110 and the transmitting end module 120 may be respectively disposed in two different housings, that is, the receiving end module 110 and the transmitting end module 120 are not on the same PCB in terms of circuit boards.
In this embodiment, in the live broadcast process, the transmitting end module 120 and the headset 200 are carried by a main broadcast or a user, and therefore, in this embodiment, the transmitting end module 120 and the headset 200 may be defined as main broadcast end devices.
Referring to fig. 1 and fig. 2, wherein fig. 2 is a schematic circuit structure diagram of a live audio signal transmission system disclosed in this embodiment, in an embodiment, the receiving end module 110 includes: a first wireless communication chip 11, a terminal interface 13, and a processor 14, wherein:
the terminal interface 13 is connected to the live broadcast terminal 300 by wire, and transmits and receives audio signals to and from the terminal 300. Specifically, the terminal interface 13 and the terminal 300 may be connected by wire, for example, by a data line, an audio line, or the like. Generally, when audio signals are transmitted and received by adopting a wired connection mode, delay is basically avoided, namely, the audio signals are transmitted and received by adopting the wired connection mode, so that the timeliness requirement of live broadcasting can be met.
The first wireless communication chip 11 performs audio signal transmission and reception with the terminal interface 13. Specifically, the terminal interface 13 and the first wireless communication chip 11 may be connected through the processor 14, referring to fig. 2, the processor 14 is connected between the first wireless communication chip 11 and the terminal interface 13, and the terminal interface 13 bidirectionally transmits audio signals with the first wireless communication chip 11 through the processor 14. Specifically, after the first wireless communication chip 11 wirelessly receives the microphone signal sent by the transmitting end module 120, the processor 14 processes the signal and transmits the processed signal to the terminal interface 13, so that the microphone signal is transmitted to the terminal 300, thereby providing the microphone signal of the main broadcast to the live broadcast platform. Similarly, after the terminal interface 13 acquires the live audio from the terminal 300, the processor 14 processes the signal and transmits the processed signal to the first wireless communication chip 11, so that the live audio of the live platform is provided to the headset 200.
Referring to fig. 1 and fig. 2, in an embodiment, the transmitting end module 120 includes: a headset interface 21 and a second wireless communication chip 22, wherein:
the headset interface 21 is connected to the headset 200 for live broadcasting via a wire, and transmits and receives audio signals to and from the headset 200. In particular, the headset interface 21 and the headset 200 may be wired, for example, by means of an audio line or the like. Generally, when audio signals are transmitted and received by adopting a wired connection mode, delay is basically avoided, namely, the audio signals are transmitted and received by adopting the wired connection mode, so that the timeliness requirement of live broadcasting can be met.
The second wireless communication chip 22 performs audio signal transmission with the headset interface 21. The second wireless communication chip 22 transmits an audio signal (e.g., a microphone signal) collected by the headset interface 21 to the first wireless communication chip 11, and transmits the audio signal received from the first wireless communication chip 11 to the headset interface 21, so that the audio signal can be transmitted to the headset 200. In an implementation process, some signal processing modules, such as an operational amplifier, a power amplifier, etc., may be connected between the second wireless communication chip 22 and the headset interface 21, for example, see the following description. In this embodiment, the second wireless communication chip 22 receives the live audio (provided by the terminal 300) sent by the receiving module 110, and transmits the live audio to the headset interface 21, so that the live audio of the terminal 300 is transmitted to the headset 200. Similarly, after acquiring the microphone signal from the headset 200, the headset interface 21 transmits the microphone signal to the second wireless communication chip 22, so that the terminal provides the microphone signal of the headset 200. In a specific embodiment, the headset interface 21 may include a microphone interface 21a and an earphone interface 21b, that is, the microphone interface 21a and the earphone interface 21b are different interfaces; of course, the microphone interface 21a and the earphone interface 21b may share one interface, and the audio signal and the microphone signal are distinguished by different contact terminals.
Considering that earphones, microphones, mobile phones and the like are often devices of different manufacturers, the devices can only communicate by adopting a standard protocol, and the requirement of real-time transmission of high tone quality in the live broadcast process cannot be well guaranteed. In view of the above, in the present embodiment, the first wireless communication chip 11 and the second wireless communication chip 22 perform wireless data transceiving through a proprietary protocol with transmission efficiency greater than that of the standard protocol. In a specific embodiment, the proprietary protocol is different from the standard communication protocol, and specifically, for example, some fields of a frame header and a frame trailer can be reduced, so that the overhead of the protocol can be reduced; as another example, the communication delay between the first wireless communication chip 11 and the anchor may be reduced by configuring wireless transmission parameters, which may include sampling rate, bandwidth, delay, etc. In the present embodiment, the reduction of the delay of the wireless communication between the first wireless communication chip 11 and the anchor (for example, the transmitting-side second wireless communication chip 22) is realized by a proprietary protocol. It should be noted that, in this embodiment, since the communication between the receiving end module 110 and the transmitting end module 120 is internal communication, the first wireless communication chip 11 and the second wireless communication chip 22 can communicate according to a private protocol, thereby overcoming the technical obstacles of the communication standard.
In an alternative embodiment, in the process of wirelessly transceiving signals by the first wireless communication chip 11 and the second wireless communication chip 22, when there is a packet loss condition in the microphone signal received by the first wireless communication chip 11, the processor 14 performs packet loss repairing processing on the received microphone signal to compensate for the packet loss signal. In contrast to providing a processor at the transmitting end, in this embodiment, the processor 14 can compensate the microphone signal and stably transmit the microphone signal to the live terminal.
In an alternative embodiment, the first wireless communication chip 11 is a bluetooth communication chip, and the second wireless communication chip 22 is a bluetooth communication chip. That is, wireless communication is performed between the first wireless communication chip 11 and the second wireless communication chip 22 through bluetooth. In an embodiment, referring to fig. 2, a microphone path 12a (shown by a dashed arrow in fig. 2) and a live audio path 12b (shown by a solid arrow in fig. 2) are respectively formed between the terminal interface 13 and the first wireless communication chip 11. The microphone path 12a is used to transmit a microphone signal collected by the live headset 200, and the live audio path 12b is used to transmit a live audio signal transmitted by the live terminal 300. Accordingly, the transmit side module 120 may also include a microphone path and a live audio path. In a specific implementation process, the headset 200 acquires sound waves through a microphone to obtain a microphone signal, and then sends the microphone signal to the first wireless communication chip 11 through the second wireless communication chip 22 of the transmitting-end module 120, and then transmits the microphone signal to the terminal interface 13 through the microphone path 12a, so as to provide the microphone signal to the terminal 300.
The terminal interface 13 receives the live audio from the terminal 300, transmits the live audio to the first wireless communication chip 11 through the live audio path 12b, and transmits the live audio to the second wireless communication chip 22 of the transmitting-side module 120 through the first wireless communication chip 11, thereby providing the live audio to the headset 200.
In a specific embodiment, the terminal interface 13 may be a digital interface or an analog interface.
In an embodiment, the terminal interface 13 is a digital interface, please refer to fig. 3A and fig. 3B, which are schematic circuit structure diagrams of a live audio signal transmission system disclosed in this embodiment, wherein fig. 3A illustrates that the microphone interface 21a is an analog interface, fig. 3B illustrates that the microphone interface 21a is a digital interface, in the embodiment illustrated in fig. 3A and fig. 3B, the terminal interface 13 is a digital interface, the digital interface may be an interface for transmitting digital signals, such as a USB interface, a miniUSB interface, a type C interface, and the like, and the terminal interface 13 is connected to the processor 14, that is, the terminal interface 13 and the first wireless communication chip 11 through the processor 14 respectively form a microphone path 12a and a live audio path 12B.
In another embodiment, the terminal interface 13 is an analog interface, please refer to fig. 4A and 4B, which are schematic circuit structure diagrams of a second embodiment of the live audio signal transmission system disclosed in this embodiment, wherein fig. 4A illustrates that the microphone interface 21a is an analog interface, fig. 4B illustrates that the microphone interface 21a is a digital interface, the terminal interface 13 is connected to the processor 14 through the first digital-to-analog converter (shown as DAC1 in fig. 4A and 4B) and the first analog-to-digital converter (shown as ADC1 in fig. 4A and 4B), respectively, that is, the terminal interface 13 forms the microphone path 12a with the first wireless communication chip 11 through the first digital-to-analog converter (shown as DAC1 in fig. 4A and 4B), the processor 14; the terminal interface 13 and the first wireless communication chip 11 form a live audio path 12B through the first analog-to-digital converter (ADC 1 shown in fig. 4A and 4B), the processor 14.
As for the above two embodiments, the microphone interface 21a in the headset interface 21 can be classified into a digital interface and an analog interface, please refer to fig. 3A and 4A, and fig. 3B and 4B, where fig. 3A and 4A illustrate an example in which the microphone interface 21a is an analog interface, and fig. 3B and 4B illustrate an example in which the microphone interface 21a is a digital interface.
In one embodiment, referring to fig. 3A and fig. 4A, the headset interface 21 includes a microphone interface 21a and an earphone interface 21b, the microphone interface 21a is an analog interface, and the earphone interface 21b is an analog interface. The microphone interface 21a is connected to the second wireless communication chip 22 through a second analog-to-digital converter (shown as ADC2 in fig. 3A and 4A), and the second analog-to-digital converter (ADC2) performs AD conversion on the analog signal output by the microphone interface 21a and then transmits the analog signal to the second wireless communication chip 22; the earphone interface 21b is connected to the second wireless communication chip 22 through a second digital-to-analog converter (DAC2), and the digital signal output by the second wireless communication chip 22 is DA-converted by the second digital-to-analog converter and then transmitted to the earphone interface 21 b.
It should be noted that, in the implementation process, an operational amplifier module 23 may be further included between the second analog-to-digital converter (ADC2) and the microphone interface 21a, and is configured to perform operational amplification on the microphone signal output by the microphone interface 21 a.
In another embodiment, referring to fig. 3B and fig. 4B, the headset interface 21 includes a microphone interface 21a and an earphone interface 21B, the microphone interface 21a is a digital interface, and the earphone interface 21B is an analog interface. The microphone interface 21a is connected to the second wireless communication chip 22 to directly supply a digital signal to the second wireless communication chip 22; the earphone interface 21B is connected to the second wireless communication chip 22 through a second digital-to-analog converter (DAC2 shown in fig. 3B and 4B), and the second digital-to-analog converter performs DA conversion on the digital signal output by the second wireless communication chip 22 and then transmits the digital signal to the earphone interface 21B.
It should be noted that, in the implementation, a power amplifier module 24 may be further included between the second digital-to-analog converter (DAC2) and the headphone interface 21b, and is configured to perform power amplification on the analog signal output by the second digital-to-analog converter (DAC 2).
In a specific implementation process, corresponding circuit modules, such as paired matching keys, may also be configured according to actual needs, and are respectively disposed at the transmitting end module 120 and the receiving end module 110, and are used for matching the first wireless communication chip 11 and the second wireless communication chip 22. Specifically, please refer to fig. 2:
for the transmitting end module 120, for example, it may include: a matching key, a volume key and the like, wherein the matching key is used for matching with the receiving end module 110 to perform wireless matching, and matches the first wireless communication chip 11 and the second wireless communication chip 22. The volume key is disposed at the transmitting end module 120, and is used for adjusting the volume of the microphone output by the microphone interface 21a, or also adjusting the volume of the audio signal output to the earphone interface 21 b. In this embodiment, the volume button is disposed on the transmitting module 120, which is convenient for the anchor to adjust and control the volume. In other embodiments of the present invention, the volume button may also be disposed on the receiving end module 110.
For the receiving end module 110, for example, it may include: one or more combinations of power adjustment keys 15, matching keys, and indicator light modules. The matching key is used for matching with the transmitting end module 120 for wireless matching, and matching the first wireless communication chip 11 and the second wireless communication chip 22. The indicator light module is used for indicating the current working state. In this embodiment, the receiving end module 110 is provided with an indicator light module, which is convenient for the anchor to determine the working condition of the receiving end module 110 in the live broadcasting process.
The power adjustment key 15 is disposed on the receiving end module 110 and connected to the first wireless communication chip 11. In the specific implementation process, the transmission power and the reception power of the first wireless communication chip 11 can be adjusted by detecting the power adjustment key, so as to adjust the wireless transmission distance.
This embodiment also discloses a live equipment, and this live equipment includes: the sound card includes a first housing, a second housing, and the sound card disclosed in the above embodiments, wherein the receiving end module 110 is disposed in the first housing to form a first device, and the transmitting end module 120 is disposed in the second housing to form a second device.
In the present embodiment, the first housing and the second housing are referred to as two independent housings, that is, the functional circuit modules are independently mounted on the two independent housings. The circuit modules assembled in the respective housings can independently realize the respective functions disclosed in the above embodiments.
The present embodiment also discloses a live broadcasting system, please refer to fig. 1, where the live broadcasting system includes: the above embodiments disclose a live device 100 (or referred to as a sound card) and a headset 200.
In an optional embodiment, the live system further comprises: the live broadcast device 100, the headset 200 and the terminal 300 for live broadcast disclosed in the above embodiments.
According to the live broadcasting system and the audio signal transmission equipment thereof disclosed by the embodiment of the invention, the receiving end module and the transmitting end module are of a split structure, wherein the receiving end module is in wired connection with a terminal for live broadcasting through a terminal interface, and the transmitting end module is in wired connection with a headset through a headset interface, so that the audio signal can be transmitted between the receiving end module and the terminal quickly and with high quality, and the audio signal can be transmitted between the transmitting end module and the headset quickly and with high quality; the first wireless communication chip of the receiving end module and the second wireless communication chip of the transmitting end module receive and transmit wireless data through a private protocol with transmission efficiency greater than that of a standard protocol, so that audio signals can be transmitted between the receiving end module and the transmitting end module quickly and with high quality. Therefore, the audio signal can be rapidly transmitted with high quality between the headset for live broadcasting and the live broadcasting terminal. That is, the audio data transmission quality is improved in the live broadcast process, and the audio transmission efficiency is improved.
In addition, the live broadcast audio signal transmission system disclosed by the embodiment of the invention improves the convenience of the anchor or the user because the anchor or the user only needs to carry the transmitting terminal module and does not need to carry the receiving terminal module and the live broadcast terminal. In summary, the live audio signal transmission circuit disclosed in the embodiment of the present invention improves the convenience of the anchor on the premise of ensuring the quality of the live audio.
Moreover, the processor and the like are arranged at the receiving end, so that on one hand, the structure of the transmitting end module can be greatly simplified, namely, the transmitting end module is exquisite and small in structure and convenient to carry by the anchor; on the other hand, in the case that the transmitting end transmits a signal wirelessly to the receiving end with interference, the processor of the receiving end may process (compensate) the interfered data, for example, and the receiving end is connected to the live terminal by wire, so that the compensated signal can be stably transmitted to the live terminal.
It will be appreciated by those skilled in the art that the above-described preferred embodiments may be freely combined, superimposed, without conflict.
It will be understood that the embodiments described above are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions for details described herein may be made by those skilled in the art without departing from the basic principles of the invention.
Claims (10)
1. A live audio signal transmission system (100), comprising: the receiving end module (110) and the transmitting end module (120) are of split structures;
the receiving-end module (110) comprises:
a terminal interface (13) which is connected with a live broadcast terminal (300) by wire and which receives and transmits audio signals from and to the terminal (300);
a first wireless communication chip (11) that transceives audio signals with the transmitting-end module (120); and
a processor (14) connected between the terminal interface (13) and the first wireless communication chip (11); the processor (14) is configured to process the audio signal received by the first wireless communication chip (11) and transmit the processed audio signal to the terminal interface (13), and process the audio signal received by the terminal interface (13) and transmit the processed audio signal to the first wireless communication chip (11);
the transmitting end module (120) comprises:
a headset interface (21) that is wired to a headset (200) for live broadcasting and that transmits and receives audio signals to and from the headset (200); and
a second wireless communication chip (22) that performs audio signal transmission with the headset interface (21); the second wireless communication chip (22) sends the audio signal collected by the headset interface (21) to the first wireless communication chip (11), and transmits the audio signal received from the first wireless communication chip (11) to the headset interface (21);
the first wireless communication chip (11) and the second wireless communication chip (22) carry out wireless data transceiving through a private protocol with transmission efficiency greater than a standard protocol.
2. The live audio signal transmission system of claim 1, wherein the first wireless communication chip (11) is a bluetooth communication chip and the second wireless communication chip (22) is a bluetooth communication chip.
3. The live audio signal transmission system of claim 1, further comprising:
the paired matching keys are respectively arranged on the transmitting end module (120) and the receiving end module (110) and are used for matching the first wireless communication chip (11) and the second wireless communication chip (22);
a volume key arranged at the transmitting terminal module (120);
and the power adjusting key is arranged on the receiving end module (110) and used for adjusting the transmitting power and the receiving power of the first wireless communication chip (11).
4. A live audio signal transmission system according to any one of claims 1-3, wherein the terminal interface (13) is a digital interface, the terminal interface (13) being connected to the processor (14).
5. A live audio signal transmission system according to any one of claims 1-3, wherein the terminal interface (13) is an analog interface, the terminal interface (13) being connected to the processor (14) via a first digital-to-analog converter and a first analog-to-digital converter, respectively.
6. A live audio signal transmission system according to any of claims 1-3, wherein the headset interface (21) comprises a microphone interface (21a) and an earphone interface (21b), the microphone interface (21a) being a digital interface and the earphone interface (21b) being an analog interface;
the microphone interface (21a) is connected to the second wireless communication chip (22) to directly provide a digital signal to the second wireless communication chip (22);
the earphone interface (21b) is connected to the second wireless communication chip (22) through a second digital-to-analog converter, and the second digital-to-analog converter performs DA conversion on the digital signal output by the second wireless communication chip (22) and then transmits the digital signal to the earphone interface (21 b).
7. A live audio signal transmission system according to any of the claims 1-6, wherein the headset interface (21) comprises a microphone interface (21a) and an earphone interface (21b), the microphone interface (21a) being an analog interface and the earphone interface (21b) being an analog interface;
the microphone interface (21a) is connected to the second wireless communication chip (22) through a second analog-to-digital converter, and the second analog-to-digital converter performs AD conversion on an analog signal output by the microphone interface (21a) and then transmits the analog signal to the second wireless communication chip (22);
the earphone interface (21b) is connected to the second wireless communication chip (22) through a second digital-to-analog converter, and the second digital-to-analog converter performs DA conversion on the digital signal output by the second wireless communication chip (22) and then transmits the digital signal to the earphone interface (21 b).
8. A live device, comprising:
a first housing;
a second housing; and
a live audio signal transmission system as claimed in any one of claims 1-7;
wherein the receiving end module (110) is arranged in the first housing to form a first device, and the transmitting end module (120) is arranged in the second housing to form a second device.
9. A live broadcast system, comprising:
live device as claimed in claim 8 and a headset (200).
10. A live system according to claim 9, characterized in that the live system further comprises a terminal (300) for live.
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| CN202011584977.4A CN112714346A (en) | 2020-12-28 | 2020-12-28 | Live broadcast system and audio signal transmission system and equipment thereof |
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Application publication date: 20210427 |