CN113223550A - Real-time call system, control method of real-time call system, and driving device - Google Patents
Real-time call system, control method of real-time call system, and driving device Download PDFInfo
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- CN113223550A CN113223550A CN202110518795.5A CN202110518795A CN113223550A CN 113223550 A CN113223550 A CN 113223550A CN 202110518795 A CN202110518795 A CN 202110518795A CN 113223550 A CN113223550 A CN 113223550A
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- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
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- 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
- G10L15/00—Speech recognition
- G10L15/20—Speech recognition techniques specially adapted for robustness in adverse environments, e.g. in noise, of stress induced speech
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- 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
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
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- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
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- 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
- G10L15/00—Speech recognition
- G10L15/22—Procedures used during a speech recognition process, e.g. man-machine dialogue
- G10L2015/223—Execution procedure of a spoken command
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- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L2021/02082—Noise filtering the noise being echo, reverberation of the speech
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Abstract
The invention discloses a real-time communication system, a control method of the real-time communication system and driving equipment, wherein the real-time communication system comprises a voice acquisition device, a controller and a voice processing device, wherein the voice acquisition device is used for acquiring voice signals in the driving equipment and transmitting the voice signals to the controller; the power amplifier is electrically connected with the controller through a first automobile audio bus and is used for acquiring sound signals played by an audio speaker and a headrest speaker in the driving equipment and transmitting the acquired sound signals to the controller as echo cancellation reference signals; and the controller is used for carrying out noise reduction processing on the voice signals based on the echo cancellation reference signals and transmitting the processed voice signals to the power amplifier through the second automobile audio bus so that the power amplifier transmits the processed voice signals to the corresponding headrest loudspeaker. The invention realizes the technical effect that the real-time talkback can be carried out on different positions in the cockpit and the passenger cabin of the same driving device by using low-cost hardware devices.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a real-time communication system, a control method of the real-time communication system and driving equipment.
Background
Due to the fact that the size of the large passenger car is large in the car, in the driving process, if the large passenger car is in the situation of playing music or other noisy sounds, the problem that the other party cannot hear the speech easily occurs between the driver/the passenger car and the passenger in the rear passenger cabin, and therefore communication between the driver/the passenger car and the passenger in the rear passenger cabin is difficult. At present, communication devices are usually arranged in a cockpit and a passenger cabin respectively to solve the problem of difficult communication between the cockpit and the passenger cabin.
However, the communication device provided in the prior art can realize real-time talkback only under the condition that two talkback positions are isolated from each other, for example, a separate cockpit and a separate passenger cabin exist, and cannot realize real-time talkback in most cases; and other buttons are needed for assistance when voice input is carried out, unidirectional communication is also realized, and a noise reduction processing method commonly used in the prior art is to realize talkback by collecting noise reduction signals through a voice collecting device array, so that the noise reduction effect is poor.
Disclosure of Invention
The invention provides a real-time communication system, a control method of the real-time communication system and a driving device, and solves the technical problems that a cockpit and a passenger cabin of the same driving device cannot communicate in real time and the noise reduction effect of a sound signal cannot be achieved in the prior art.
The embodiment of the invention provides a real-time communication system, which comprises a controller, at least two voice acquisition devices, a plurality of headrest speakers and a power amplifier, wherein the controller is used for controlling the at least two voice acquisition devices to be connected with the headrest speakers;
the headrest speakers are arranged at the headrest of each seat in the driving equipment, and the plurality of headrest speakers are electrically connected with the power amplifier;
the voice acquisition device is arranged in the driving equipment, is electrically connected with the controller and is used for acquiring voice signals in the driving equipment and transmitting the voice signals to the controller;
the power amplifier is electrically connected with the controller through a first automobile audio bus and is used for acquiring sound signals played by an audio speaker in the driving equipment and a headrest speaker and transmitting the acquired sound signals to the controller as echo cancellation reference signals;
the controller carries out noise reduction processing on the voice signal based on the echo cancellation reference signal, and transmits the processed voice signal to the power amplifier through a second automobile audio bus, so that the power amplifier transmits the processed voice signal to the corresponding headrest loudspeaker.
Furthermore, the at least two voice acquisition devices comprise a first voice acquisition device and at least one second voice acquisition device;
the first voice acquisition device is arranged at the roof between a driver seat and a co-driver seat in the driving equipment; at least one second voice acquisition device is arranged in a passenger cabin of the driving equipment; the first voice acquisition device is connected with the controller through a first transmission line and used for acquiring first voice signals at a driver seat and a passenger seat and transmitting the first voice signals to the controller;
the second voice acquisition device is connected with the controller through a second transmission line and used for acquiring a second voice signal in the passenger cabin and transmitting the second voice signal to the controller.
Further, the controller comprises a voice noise reduction module;
the first voice acquisition device is electrically connected with the voice noise reduction module through the first transmission line;
the second voice acquisition device is electrically connected with the voice noise reduction module through the second transmission line;
the voice noise reduction module realizes signal transmission with the power amplifier through the first automobile audio bus and the second automobile audio bus.
Further, the voice noise reduction module comprises a first noise reduction sub-module, a second noise reduction sub-module and a voice integration sub-module;
the first voice acquisition device is electrically connected with the first noise reduction submodule through the first transmission line; at least one second voice acquisition device is electrically connected with the voice integration submodule and the second noise reduction submodule respectively; the voice integration submodule is electrically connected with the second noise reduction submodule; the first noise reduction submodule and the second noise reduction submodule are connected with the power amplifier through different first automobile audio buses, and the first noise reduction submodule and the second noise reduction submodule are connected with the power amplifier through different second automobile audio buses;
the first noise reduction submodule is used for carrying out noise reduction processing on the voice signal transmitted by the first voice acquisition device;
the second noise reduction submodule is used for carrying out noise reduction processing on the voice signal transmitted by the second voice acquisition device;
and the voice integration sub-module is used for integrating the voice signals transmitted by the second voice acquisition devices and transmitting the integrated voice signals to the second noise reduction sub-module when the number of the second voice acquisition devices is more than 1.
Further, the controller further comprises a music playing module;
the music playing module is electrically connected with the power amplifier.
Further, the power amplifier also comprises a plurality of audio speakers which are electrically connected with the power amplifier.
Further, the number of the first car audio buses is greater than or equal to 4.
Further, in the driving apparatus, one headrest speaker is provided at each of left and right ends of a headrest of each seat.
An embodiment of the present invention further provides a method for controlling a real-time communication system, where the real-time communication system described in any of the above embodiments executes the method for controlling the real-time communication system, and the method includes:
the voice acquisition device acquires voice signals in the driving equipment and transmits the voice signals to the controller;
the power amplifier acquires sound signals played by an audio speaker and a headrest speaker in the driving equipment, and transmits the acquired sound signals to the controller through a first automobile audio bus as echo cancellation reference signals;
the controller carries out noise reduction processing on the voice signal based on the echo cancellation reference signal and transmits the processed voice signal to the power amplifier through a second automobile audio bus;
the power amplifier transmits the processed voice signal to the corresponding headrest speaker.
The embodiment of the invention also provides driving equipment, and the driving equipment comprises the real-time communication system in any embodiment.
The invention discloses a real-time communication system, a control method of the real-time communication system and driving equipment, wherein the real-time communication system comprises a controller, at least two voice acquisition devices, a plurality of headrest speakers and a power amplifier; the voice acquisition device is used for acquiring voice signals in the driving equipment and transmitting the voice signals to the controller; the power amplifier is electrically connected with the controller through a first automobile audio bus and is used for acquiring sound signals played by an audio speaker and a headrest speaker in the driving equipment and transmitting the acquired sound signals to the controller as echo cancellation reference signals; the controller carries out noise reduction processing on the voice signals based on the echo cancellation reference signals, and transmits the processed voice signals to the power amplifier through the second automobile audio bus, so that the power amplifier transmits the processed voice signals to corresponding headrest speakers. The invention solves the technical problems that the cockpit and the passenger cabin of the same driving device can not be talkbacked in real time and the noise reduction effect of the sound signal is realized in the prior art, and realizes the technical effect that the real-time talkback can be carried out at different positions in the cockpit and the passenger cabin of the same driving device by using low-cost hardware equipment.
Drawings
Fig. 1 is a structural diagram of a real-time communication system according to an embodiment of the present invention;
fig. 2 is a block diagram of another real-time communication system according to an embodiment of the present invention;
fig. 3 is a block diagram of another real-time communication system according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of a real-time call system according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that the terms "first", "second", and the like in the description and claims of the present invention and the accompanying drawings are used for distinguishing different objects, and are not used for limiting a specific order. The following embodiments of the present invention may be implemented individually, or in combination with each other, and the embodiments of the present invention are not limited in this respect.
Fig. 1 is a structural diagram of a real-time call system according to an embodiment of the present invention.
As shown in fig. 1, the real-time call system includes a controller 10, at least two voice collecting devices 20, a plurality of headrest speakers 30, and a power amplifier 40; the headrest speakers 30 are provided at headrests of respective seats in the driving apparatus, and the plurality of headrest speakers 30 are each electrically connected to the power amplifier 40.
The voice collecting device 20 is disposed in the driving device, electrically connected to the controller 10, and configured to collect a voice signal in the driving device and transmit the voice signal to the controller 10.
The power amplifier 40 is electrically connected to the controller 10 through a first car audio bus A2B-1, and is configured to acquire sound signals played by the audio speaker 50 and the headrest speaker 30 in the driving device, and transmit the acquired sound signals to the controller 10 as an echo cancellation reference signal.
The controller 10 performs noise reduction processing on the voice signal based on the echo cancellation reference signal and transmits the processed voice signal to the power amplifier 40 through the second car audio bus A2B-2, so that the power amplifier 40 transmits the processed voice signal to the corresponding headrest speaker 30.
Specifically, the number of the voice collecting devices 20 is at least two, one is arranged in the cockpit of the driving device, and the rest are arranged in the passenger cabin of the driving device and are respectively used for collecting voice signals in the cockpit and the passenger cabin. Referring to fig. 1, taking two voice collecting devices 20 as an example (in the following description of the present application, two voice collecting devices 20 are used as an example), if a voice signal in a cockpit is collected by a voice collecting device 20 in the cockpit, the voice signal is transmitted to the controller 10, and meanwhile, if a sound is played by an audio speaker 50 in the vehicle and a talking sound is just played by a headrest speaker 30, the sounds played by the audio speaker 50 and the headrest speaker 30 are also collected by the voice collecting device 20 at the same time, obviously, the sounds played by the speakers are not the voice signal which needs to be transmitted to a passenger cabin in the cockpit, and therefore need to be filtered out.
At this time, the power amplifier 40 acquires the sound signals emitted by the audio speaker 50 and the headrest speaker 30 in the driving device, and transmits the acquired sound signals to the controller 10 through the first car audio bus A2B-1 as echo cancellation reference signals, the controller 10 performs noise reduction processing on the voice signals transmitted by the voice acquisition device 20 by using the echo cancellation reference signals, that is, in the voice signals acquired by the voice acquisition device 20, the mistakenly acquired voice signals emitted by the audio speaker 50 and the headrest speaker 30 are cancelled, only the voice signals emitted by the driver or co-driver in the cabin are left, and the voice signals subjected to noise reduction processing are transmitted to the power amplifier 40 through the second car audio bus A2B-2; the power amplifier 40 then transmits the processed speech signal from the cockpit to the headrest speaker 30 of the passenger compartment, so that the passenger in the passenger compartment can clearly hear the speaking voice in the cockpit.
Similarly, the principle of speaking into the cockpit by the passenger cabin is the same as that of speaking into the passenger cabin by the cockpit. Therefore, the real-time communication function between the cockpit and the passenger cabin is realized.
The controller 10 may select a common hardware device In the current driving device, namely, an In-Vehicle Infotainment system (IVI), and through the mainstream hardware devices In the current industry, not only the real-time communication system provided by the present application has a stronger universality, but also the cost is saved. The controller 10 and the power amplifier 40 realize signal transmission through the automobile audio bus A2B, and the automobile audio bus A2B provides higher audio quality compared with the traditional audio bus, and simultaneously can greatly save the weight and the cost of the automobile audio wiring harness.
According to the invention, the signal transmission between the controller and the power amplifier is realized by using the automobile audio bus A2B, and meanwhile, the noise reduction processing is carried out on the voice signal collected by the voice collection device by using the sound signals of the audio speaker and the headrest speaker in the driving equipment as echo cancellation reference signals, so that the technical problems that the cockpit and the passenger cabin of the same driving equipment cannot carry out real-time talkback and the noise reduction effect of the sound signal in the prior art are solved, and the technical effect that the cockpit and different positions in the passenger cabin of the same driving equipment can carry out real-time talkback by using low-cost hardware equipment is realized.
Fig. 2 is a block diagram of another real-time communication system according to an embodiment of the present invention.
Optionally, as shown in fig. 2, the at least two voice collecting devices 20 include a first voice collecting device 21 and at least one second voice collecting device 22; the first voice acquisition device 21 is arranged at the roof between a driver seat and a co-driver seat in the driving equipment; at least one second voice collecting device 22 is arranged in a passenger cabin of the driving equipment; the first voice acquisition device 21 is connected with the controller 10 through a first transmission line a1, and is used for acquiring first voice signals at a driver seat and a passenger seat and transmitting the first voice signals to the controller 10; the second voice collecting device 22 is connected to the controller 10 through a second transmission line a2, and is used for collecting a second voice signal in the passenger compartment and transmitting the second voice signal to the controller 10.
Specifically, the voice collecting device 20 may be a microphone, or may be other electronic devices capable of collecting voice signals in real time.
For example, referring to fig. 2, fig. 2 is a seven-seat driving apparatus, seven seats are respectively denoted by seat1 to seat7, and taking the example of providing two voice collecting devices 20, the first voice collecting device 21 is disposed at the roof between the seat1 of the driver's seat and the seat2 of the passenger's seat, and since the second row of seats is closer to the driver's cabin, the second voice collecting device 22 may not be separately provided for cost saving, but the second voice collecting device 22 is disposed at the roof in the middle of the last row of seats, so as to conveniently collect the voice signals of the last row of passengers farther from the driver's cabin. The first voice collecting device 21 and the second voice collecting device 22 are respectively connected with the controller 10 through a first transmission line a1 and a second transmission line a2, and collected voice signals are transmitted to the controller 10 through different transmission lines without mutual interference, so that the tone quality is ensured.
It should be noted that, if the cost is not considered, the second voice collecting device 22 may be disposed at the roof of the driving device at the middle position of each row of seats in the cabin, so that the real-time communication between the cabin and each row of seats in the cabin is clearer, and the intercom function between the front row of seats and the rear row of seats in the cabin can be realized.
Optionally, as shown in fig. 2, the controller 10 includes a voice noise reduction module 11; the first voice acquisition device 21 is electrically connected with the voice noise reduction module 11 through a first transmission line a 1; the second voice collecting device 22 is electrically connected with the voice noise reduction module 11 through a second transmission line a 2; the voice noise reduction module 11 communicates signals with the power amplifier 40 via a first car audio bus A2B-1 and a second car audio bus A2B-2.
Specifically, the controller 10 is provided with a voice noise reduction module 11, and the voice noise reduction module 11 performs noise reduction and echo removal on the voice signal acquired by the voice acquisition device 20 through a specific algorithm. After processing the voice signal, the voice noise reduction module 11 transmits the processed voice signal to the power amplifier 40 through the second car audio bus A2B-2. In addition, the voice noise reduction module 11 may also receive an echo cancellation reference signal from the power amplifier via the first car audio bus A2B-1. The first automobile audio bus A2B-1 is used as an uplink channel between the voice noise reduction module 11 and the power amplifier 40, and the second automobile audio bus A2B-2 is used as a downlink channel between the voice noise reduction module 11 and the power amplifier 40 respectively, so that mutual interference is avoided, and the quality of signal transmission is ensured.
Fig. 3 is a block diagram of another real-time communication system according to an embodiment of the present invention.
Optionally, as shown in fig. 3, the voice noise reduction module 11 includes a first noise reduction sub-module 111, a second noise reduction sub-module 112, and a voice integration sub-module 113; the first voice acquisition device 21 is electrically connected with the first noise reduction submodule 111 through a first transmission line a 1; the at least one second voice acquisition device 22 is electrically connected with the voice integration sub-module 113 and the second noise reduction sub-module 112 respectively; the voice integration sub-module 113 is electrically connected with the second noise reduction sub-module 112; the first and second noise reduction sub-modules 111, 112 are coupled to the power amplifier 40 via a first, different, vehicle audio bus A2B-1, and the first and second noise reduction sub-modules 111, 112 are coupled to the power amplifier 40 via a second, different, vehicle audio bus A2B-2.
The first noise reduction submodule 111 is configured to perform noise reduction processing on the voice signal transmitted from the first voice acquisition device 21; the second noise reduction submodule 112 is configured to perform noise reduction processing on the voice signal transmitted by the second voice acquisition device 22; the voice integration sub-module 113 is configured to, when the number of the second voice collecting devices 22 is greater than 1, integrate the voice signals transmitted by the plurality of second voice collecting devices 22 and transmit the integrated voice signals to the second noise reduction sub-module 112.
Specifically, the voice noise reduction module 11 is provided with two noise reduction submodules, namely a first noise reduction submodule 111 and a second noise reduction submodule 112, and the two noise reduction submodules are respectively and correspondingly connected to the first voice collecting device 21 and the second voice collecting device 22, that is, the voice signal collected in the cockpit and the voice signal collected in the passenger cabin respectively enter the two different noise reduction submodules for noise reduction and echo cancellation. By arranging the two noise reduction submodules, the voice signals in the cockpit and the passenger cabin can be simultaneously and separately processed in the noise reduction submodules and are respectively input to the power amplifier 40 through the independent automobile audio bus A2B, so that the power amplifier 40 can correspondingly send the voice signals to the headrest loudspeaker 30 at the corresponding position according to the setting, and the real-time talkback between the cockpit and the passenger cabin can be realized.
Optionally, as shown in fig. 2 and 3, the controller 10 further includes a music playing module 12; the music playing module 12 is electrically connected to the power amplifier 40.
Specifically, the music playing module 12 is used to play other sounds to be played, such as music, movie, and television series, and transmit the sounds to the audio speaker 50 through the power amplifier 40 for playing.
Optionally, as shown in fig. 2 and 3, the real-time call system further includes a plurality of audio speakers 50, and the plurality of audio speakers 50 are electrically connected to the power amplifier 40 (the connection line between the audio speaker 50 and the power amplifier 40 is not shown in the figure).
Specifically, the audio speakers 50 are usually provided at the front left, rear left, front right, and rear right of the driving apparatus, and it is apparent that, for better sound effects in the driving apparatus, the audio speakers 50 may also be provided at other positions in the driving apparatus as needed, for example, in the structural diagrams shown in fig. 2 and 3, the audio speakers 50 are provided at the front right of the driving apparatus, at the left and right of the second row of seats, and one audio speaker 50 is also provided at the right of the last row of seats.
In the embodiment of the present invention, the audio speaker 50 for playing music and the headrest speaker 30 for real-time communication are respectively disposed, and the sound played by the audio speaker 50 can be transmitted to the voice noise reduction module 11 in the controller 10 in an uplink manner, so that the headrest speaker 30 does not generate howling, and the sound quality and sound effect of real-time communication are ensured.
Optionally, the number of the first car audio buses A2B-1 is greater than or equal to 4.
Specifically, for sound effects, it is necessary to collect at least the sound signals of the audio speakers 50 at the front left, rear left, front right, and rear right, and thus the number of the first automobile audio buses A2B-1 is 4 at a minimum. In the embodiment of the present invention, in order to make the voice noise reduction module 11 better process the voice signals, 8 first car audio buses A2B-1 are provided, wherein four of the first car audio buses are used for transmitting the collected sound signals of the audio speakers 50 at the front left, the rear left, the front right and the rear right to the voice noise reduction module 11 in an upward manner, and the other four sound signals are used for collecting the sound signals of the headrest speakers 30 at four seats to the voice noise reduction module 11 in an upward manner.
Alternatively, in the driving apparatus, one headrest speaker 30 is provided at each of the left and right ends of the headrest of each seat.
Specifically, in order to improve the sound effect and sound quality, the optimal scheme is to arrange one headrest speaker 30 at each of the left and right ends of the headrest of each seat, so that the left and right ears of a person on the seat can receive sound at the same time, and to arrange the headrest speakers 30 at the positions of the headrests of the seats, it can be ensured that the sound transmitted from the other party affects the overall sound environment in the vehicle as little as possible. Of course, in consideration of cost, only one headrest speaker 30 may be provided on the headrest of the seat, and will not be described herein.
It should be noted that the headrest speakers 30 may be provided on headrests of some of the seats as needed, and as shown in fig. 2 and 3, the headrest speakers 30 are provided on the driver's seat, the front passenger seat, and the last row of seats; if the cost is not considered, the headrest speaker 30 may be provided on the headrest of each seat, and will not be described herein.
In the embodiment of the invention, the real-time communication system has the following advantages: 1. in the real-time call process, multimedia music, navigation and other vehicle-mounted music can be played by using the audio speaker synchronously, and the use of the headrest speaker in the real-time call process is not influenced; 2. the headrest loudspeaker is arranged on the headrest, so that the sound transmitted from the other party can be ensured to influence the whole sound environment in the vehicle as little as possible; 3. transmission line channels between the voice acquisition device and the voice noise reduction module and between the voice noise reduction module and the power amplifier are independently arranged and do not interfere with each other, so that real-time transmission of front and rear row sound signals is realized; 4. the voice noise reduction module and the power amplifier adopt an automobile audio bus A2B for signal transmission, so that the tone quality is better.
Fig. 4 is a flowchart of a control method of a real-time call system according to an embodiment of the present invention.
The method for controlling a real-time communication system executed by the real-time communication system according to any of the embodiments includes the following steps:
step S401, the voice collecting device collects voice signals in the driving equipment and transmits the voice signals to the controller.
Specifically, the voice acquisition device comprises a first voice acquisition device and at least one second voice acquisition device; the first voice acquisition device is arranged at the roof between a driver seat and a co-driver seat in the driving equipment; the at least one second voice acquisition device is arranged in a passenger cabin of the driving equipment, and the first voice acquisition device and the second voice acquisition device respectively use different transmission lines to transmit acquired voice signals to the controller.
Step S402, the power amplifier acquires sound signals played by an audio speaker and a headrest speaker in the driving device, and transmits the acquired sound signals to the controller through the first automobile audio bus as echo cancellation reference signals.
Specifically, the audio speaker is used for playing other sounds needing to be played, such as music, movie and television series, and the like, and the sounds are transmitted to the audio speaker through the power amplifier for playing, the headrest speaker is used for playing the sounds during real-time conversation, and the sounds played by the audio speaker and the sounds emitted by the headrest speaker may be collected as voice signals together with the sounds emitted by the actual vehicle occupant, so that the power amplifier acquires the sound signals played by the audio speaker and the headrest speaker, and transmits the sound signals to the controller through the first vehicle audio bus as echo cancellation reference signals.
And S403, the controller performs noise reduction processing on the voice signal based on the echo cancellation reference signal and transmits the processed voice signal to the power amplifier through the second automobile audio bus.
Specifically, after the controller receives the echo cancellation reference signal, the controller performs noise reduction processing on the voice signal transmitted by the voice acquisition device by using the echo cancellation reference signal, namely, in the voice signal acquired by the voice acquisition device, the voice signal which is emitted by the audio speaker and the headrest speaker and is acquired by mistake is eliminated, only the voice signal emitted by the personnel in the automobile is left, and the voice signal after the noise reduction processing is sent to the power amplifier through the second automobile audio bus.
In step S404, the power amplifier transmits the processed voice signal to a corresponding headrest speaker.
Specifically, the power amplifier transmits the received voice signals subjected to noise reduction and echo cancellation processing to corresponding headrest speakers, so that a real-time conversation function between the cockpit and the passenger cabin is realized.
Taking the example that a person in a cockpit speaks to a person in a passenger cabin, when a first voice acquisition device in the cockpit acquires a voice signal, the voice signal is transmitted to a controller, meanwhile, a power amplifier transmits the sound played by an audio speaker and a headrest speaker as an echo cancellation reference signal to the controller through a first automobile audio bus, the controller performs noise reduction and echo cancellation processing on the voice signal transmitted by the first voice acquisition device by using the echo cancellation reference signal, and transmits the processed voice signal to the power amplifier through a second automobile audio bus, so that the power amplifier transmits the received processed voice signal to the headrest speaker in the passenger cabin, and the function that the person in the cockpit speaks to the person in the passenger cabin is completed; similarly, the function of a person in the passenger compartment speaking to a person in the cockpit is similar to the process described above.
The embodiment of the invention provides a control method of a real-time call system executed by the real-time call system, which has the same technical characteristics as the real-time call system provided by the embodiment, so that the same technical problems can be solved, and the same technical effect can be achieved.
The embodiment of the invention also provides driving equipment, and the driving equipment comprises the real-time communication system in any embodiment.
The driving device provided by the embodiment of the present invention includes the real-time communication system in the above embodiment, so the driving device provided by the embodiment of the present invention also has the beneficial effects described in the above embodiment, and details are not described herein again.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A real-time communication system is characterized by comprising a controller, at least two voice acquisition devices, a plurality of headrest speakers and a power amplifier;
the headrest speakers are arranged at the headrest of each seat in the driving equipment, and the plurality of headrest speakers are electrically connected with the power amplifier;
the voice acquisition device is arranged in the driving equipment, is electrically connected with the controller and is used for acquiring voice signals in the driving equipment and transmitting the voice signals to the controller;
the power amplifier is electrically connected with the controller through a first automobile audio bus and is used for acquiring sound signals played by an audio speaker in the driving equipment and a headrest speaker and transmitting the acquired sound signals to the controller as echo cancellation reference signals;
the controller carries out noise reduction processing on the voice signal based on the echo cancellation reference signal, and transmits the processed voice signal to the power amplifier through a second automobile audio bus, so that the power amplifier transmits the processed voice signal to the corresponding headrest loudspeaker.
2. The real-time communication system according to claim 1, wherein the at least two voice capturing devices comprise a first voice capturing device and at least a second voice capturing device;
the first voice acquisition device is arranged at the roof between a driver seat and a co-driver seat in the driving equipment; at least one second voice acquisition device is arranged in a passenger cabin of the driving equipment; the first voice acquisition device is connected with the controller through a first transmission line and used for acquiring first voice signals at a driver seat and a passenger seat and transmitting the first voice signals to the controller;
the second voice acquisition device is connected with the controller through a second transmission line and used for acquiring a second voice signal in the passenger cabin and transmitting the second voice signal to the controller.
3. The real-time telephony system of claim 2, wherein the controller comprises a voice noise reduction module;
the first voice acquisition device is electrically connected with the voice noise reduction module through the first transmission line;
the second voice acquisition device is electrically connected with the voice noise reduction module through the second transmission line;
the voice noise reduction module realizes signal transmission with the power amplifier through the first automobile audio bus and the second automobile audio bus.
4. The real-time communication system according to claim 3, wherein the voice noise reduction module comprises a first noise reduction sub-module, a second noise reduction sub-module and a voice integration sub-module;
the first voice acquisition device is electrically connected with the first noise reduction submodule through the first transmission line; at least one second voice acquisition device is electrically connected with the voice integration submodule and the second noise reduction submodule respectively; the voice integration submodule is electrically connected with the second noise reduction submodule; the first noise reduction submodule and the second noise reduction submodule are connected with the power amplifier through different first automobile audio buses, and the first noise reduction submodule and the second noise reduction submodule are connected with the power amplifier through different second automobile audio buses;
the first noise reduction submodule is used for carrying out noise reduction processing on the voice signal transmitted by the first voice acquisition device;
the second noise reduction submodule is used for carrying out noise reduction processing on the voice signal transmitted by the second voice acquisition device;
and the voice integration sub-module is used for integrating the voice signals transmitted by the second voice acquisition devices and transmitting the integrated voice signals to the second noise reduction sub-module when the number of the second voice acquisition devices is more than 1.
5. The real-time communication system according to claim 1, wherein the controller further comprises a music playing module;
the music playing module is electrically connected with the power amplifier.
6. The real-time telephone system according to claim 5, further comprising a plurality of said audio speakers electrically connected to said power amplifier.
7. The real-time call system according to claim 1, wherein the number of the first car audio buses is greater than or equal to 4.
8. The real-time call system according to claim 1, wherein one headrest speaker is provided at each of left and right ends of a headrest of each seat in the driving apparatus.
9. A method for controlling a real-time communication system, wherein the real-time communication system according to any one of claims 1 to 8 performs the method for controlling the real-time communication system, and the method comprises:
the voice acquisition device acquires voice signals in the driving equipment and transmits the voice signals to the controller;
the power amplifier acquires sound signals played by an audio speaker and a headrest speaker in the driving equipment, and transmits the acquired sound signals to the controller through a first automobile audio bus as echo cancellation reference signals;
the controller carries out noise reduction processing on the voice signal based on the echo cancellation reference signal and transmits the processed voice signal to the power amplifier through a second automobile audio bus;
the power amplifier transmits the processed voice signal to the corresponding headrest speaker.
10. A driving apparatus, characterized in that the driving apparatus comprises the real-time communication system of any one of the above claims 1 to 8.
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| CN202110518795.5A CN113223550A (en) | 2021-05-12 | 2021-05-12 | Real-time call system, control method of real-time call system, and driving device |
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| CN202110518795.5A CN113223550A (en) | 2021-05-12 | 2021-05-12 | Real-time call system, control method of real-time call system, and driving device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113766057A (en) * | 2021-10-08 | 2021-12-07 | 中国第一汽车股份有限公司 | In-vehicle communication method, device and system and vehicle |
| CN113973254A (en) * | 2021-09-07 | 2022-01-25 | 杭州新资源电子有限公司 | Noise reduction system of automobile audio power amplifier |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022591A (en) * | 2017-12-30 | 2018-05-11 | 北京百度网讯科技有限公司 | The processing method of speech recognition, device and electronic equipment in environment inside car |
| CN109618266A (en) * | 2018-11-06 | 2019-04-12 | 东莞市华泽电子科技有限公司 | Two-way real time phone call audio-frequency processing method and two-way real time phone call intercom system |
| CN111391771A (en) * | 2020-03-25 | 2020-07-10 | 斑马网络技术有限公司 | Method, device and system for processing noise |
| CN111696539A (en) * | 2020-06-29 | 2020-09-22 | 浙江吉利新能源商用车集团有限公司 | Voice interaction system and vehicle for actively reducing noise of internal call |
| CN112309416A (en) * | 2020-10-20 | 2021-02-02 | 中国第一汽车股份有限公司 | Vehicle-mounted voice echo eliminating method, system, vehicle and storage medium |
-
2021
- 2021-05-12 CN CN202110518795.5A patent/CN113223550A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108022591A (en) * | 2017-12-30 | 2018-05-11 | 北京百度网讯科技有限公司 | The processing method of speech recognition, device and electronic equipment in environment inside car |
| CN109618266A (en) * | 2018-11-06 | 2019-04-12 | 东莞市华泽电子科技有限公司 | Two-way real time phone call audio-frequency processing method and two-way real time phone call intercom system |
| CN111391771A (en) * | 2020-03-25 | 2020-07-10 | 斑马网络技术有限公司 | Method, device and system for processing noise |
| CN111696539A (en) * | 2020-06-29 | 2020-09-22 | 浙江吉利新能源商用车集团有限公司 | Voice interaction system and vehicle for actively reducing noise of internal call |
| CN112309416A (en) * | 2020-10-20 | 2021-02-02 | 中国第一汽车股份有限公司 | Vehicle-mounted voice echo eliminating method, system, vehicle and storage medium |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113973254A (en) * | 2021-09-07 | 2022-01-25 | 杭州新资源电子有限公司 | Noise reduction system of automobile audio power amplifier |
| CN113973254B (en) * | 2021-09-07 | 2024-03-12 | 杭州新资源电子有限公司 | Noise reduction system of automobile audio power amplifier |
| CN113766057A (en) * | 2021-10-08 | 2021-12-07 | 中国第一汽车股份有限公司 | In-vehicle communication method, device and system and vehicle |
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