CN109600703B - Sound amplification system, sound amplification method thereof, and computer-readable storage medium - Google Patents
Sound amplification system, sound amplification method thereof, and computer-readable storage medium Download PDFInfo
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- CN109600703B CN109600703B CN201811619254.6A CN201811619254A CN109600703B CN 109600703 B CN109600703 B CN 109600703B CN 201811619254 A CN201811619254 A CN 201811619254A CN 109600703 B CN109600703 B CN 109600703B
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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
- H04R27/00—Public address systems
- H04R27/04—Electric megaphones
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
Abstract
The invention discloses a sound reinforcement method of a sound reinforcement system, wherein the sound reinforcement system comprises a sound reinforcement host, at least one near-speaking voice acquisition device and at least one far-speaking voice acquisition device, the near-speaking voice acquisition device and the far-speaking voice acquisition device are respectively connected with the sound reinforcement host, and the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source; the sound amplifying method of the sound amplifying system comprises the following steps: when a first audio signal collected by a near-speaking voice collection device and a second audio signal collected by a far-speaking voice collection device are received, carrying out audio pre-processing on the first audio signal; and performing sound amplification playing on the first audio signal subjected to audio preprocessing. The invention also discloses a sound amplification system and a computer readable storage medium. The invention ensures the tone quality of the audio signal played by the sound reinforcement.
Description
Technical Field
The present invention relates to the field of sound processing technologies, and in particular, to a sound reinforcement system, a sound reinforcement method thereof, and a computer-readable storage medium.
Background
In the field of education, classroom lectures are usually given without using an acoustic amplification system, or with a simple acoustic amplification system. The simple sound amplifying system only amplifies the sound of a teacher through sound amplifying equipment such as a sound box, the sound quality of the sound amplifying scheme is poor, hearing damage can be caused to teachers and students close to the sound amplifying equipment, and the sound amplifying system also has the problem that the sound quality of audio signals is poor.
Disclosure of Invention
The invention mainly aims to provide an acoustic amplification system, an acoustic amplification method thereof and a computer readable storage medium, and aims to solve the problem of poor tone quality of the acoustic amplification system.
In order to achieve the above object, the present invention provides an acoustic amplifying method for an acoustic amplifying system, where the acoustic amplifying system includes an acoustic amplifying host, at least one near-speaking voice collecting device and at least one far-speaking voice collecting device, the near-speaking voice collecting device and the far-speaking voice collecting device are respectively connected to the acoustic amplifying host, and a distance between the near-speaking voice collecting device and a sound source is smaller than a distance between the far-speaking voice collecting device and the sound source; the sound amplifying method of the sound amplifying system comprises the following steps:
when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, performing audio pre-processing on the first audio signal, wherein the audio pre-processing comprises at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing and gain enhancement processing;
and performing sound amplification playing on the first audio signal after audio preprocessing.
In an embodiment, the sound reinforcement method of the sound reinforcement system further includes:
when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, determining a playing end of the first audio signal;
when the playing end is a terminal of a preset type, executing the step of performing audio preprocessing on the first audio signal;
performing howling suppression processing on the first audio signal after audio preprocessing;
and performing sound amplification playing on the first audio signal subjected to the howling suppression processing.
In an embodiment, after the step of determining the play end of the first audio signal, the method further includes:
when the playing end is a remote terminal in communication connection with the sound amplification host, acquiring a remote audio signal transmitted by the remote terminal;
performing audio preprocessing on the first audio signal and the second audio signal, and performing echo suppression processing on the first audio signal and the second audio signal after the audio preprocessing according to the remote audio signal;
and sending the first audio signal and the second audio signal after the echo suppression processing to a remote terminal.
In an embodiment, the public address host further includes a local audio input module, and the public address method of the public address system further includes:
detecting whether a third audio signal input by a local audio input module is received;
and when the third audio signal is not received, executing the step of pre-processing the audio of the first audio signal by the audio.
In an embodiment, after the step of detecting whether the third audio signal input by the local audio input module is received, the method further includes:
when the third audio signal is received, performing audio preprocessing on the first audio signal and the third audio signal;
performing audio mixing processing on the first audio signal and the third audio signal after audio preprocessing to enable the third audio signal to serve as a background audio of the processed first audio signal;
and performing sound amplification playing on the first audio signal after the sound mixing processing.
In an embodiment, after the step of detecting whether the third audio signal input by the local audio input module is received, the method further includes:
when the third audio signal is received, judging whether the sound amplification host starts a priority mode of the third audio signal;
executing the step of performing audio preprocessing on the first audio signal and the third audio signal when the priority mode of the third audio signal is not started by the sound amplification host;
and when the priority mode of the third audio signal is started by the sound amplifying host, carrying out audio preprocessing on the third audio signal, and carrying out sound amplifying playing on the third audio signal after the audio preprocessing.
In an embodiment, the step of playing the first audio signal after audio preprocessing by public address includes:
performing power amplification on the first audio signal after audio pre-processing to obtain a fourth audio signal;
and transmitting the fourth audio signal to a sound box connected with the sound amplifying main body, so that the sound box performs sound amplifying playing corresponding to the fourth audio signal.
In an embodiment, the sound reinforcement method of the sound reinforcement system further includes:
detecting whether the near-talking voice acquisition device and the far-talking voice acquisition device acquire audio signals in real time;
when the near-talking voice acquisition device acquires a first audio signal, or when the near-talking voice acquisition device acquires the first audio signal and the far-talking voice acquisition device acquires a second audio signal, executing the step of performing audio pre-processing on the first audio signal;
when the far-speaking voice acquisition device acquires a second audio signal, carrying out audio preprocessing on the second audio signal;
and performing sound amplification playing on the second audio signal after audio preprocessing.
In order to achieve the above object, the present invention further provides an acoustic amplifying system, where the acoustic amplifying system includes an acoustic amplifying host, at least one near-speaking voice collecting device and at least one far-speaking voice collecting device, the near-speaking voice collecting device and the far-speaking voice collecting device are respectively connected to the acoustic amplifying host, and a distance between the near-speaking voice collecting device and a sound source is smaller than a distance between the far-speaking voice collecting device and the sound source; the public address host comprises a processor, a memory and a public address program stored on the memory and capable of running on the processor, wherein the public address program realizes the steps of the public address method of the public address system when being executed by the processor.
To achieve the above object, the present invention further provides a computer-readable storage medium storing a sound amplification program, which when executed by the processor, implements the steps of the sound amplification method of the sound amplification system as described above.
The sound amplifying system comprises a sound amplifying host, a near-speaking voice acquisition device and a far-speaking voice acquisition device which are respectively connected with the sound amplifying host, wherein the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source; because the sound amplifying system supports near-distance and remote audio sound amplification, when the sound amplifying host receives near-distance audio signals and remote audio signals, only the near-distance audio signals are subjected to audio pre-processing, and the near-distance audio signals subjected to audio pre-processing are subjected to sound amplification playing, so that the sound amplifying system can perform sound amplification playing on the near-distance audio signals with low audio tone quality loss, and the tone quality of the audio signals is further ensured because the near-distance audio signals are subjected to audio pre-processing.
Drawings
Fig. 1 is a schematic view of a sound reinforcement system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a hardware structure of a sound reinforcement host in the sound reinforcement system according to the present invention;
fig. 3 is a schematic flow chart of a first embodiment of the sound reinforcement method of the sound reinforcement system according to the present invention;
fig. 4 is a schematic flow chart of a second embodiment of the sound reinforcement method of the sound reinforcement system according to the present invention;
fig. 5 is a schematic flow chart of a sound reinforcement method of the sound reinforcement system according to a third embodiment of the present invention;
fig. 6 is a schematic flow chart of an acoustic amplification method of an acoustic amplification system according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The main solution of the embodiment of the invention is as follows: when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, performing audio pre-processing on the first audio signal, wherein the audio pre-processing comprises at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing and gain enhancement processing; and performing sound amplification playing on the first audio signal after audio preprocessing.
Because the sound amplifying system supports near-distance and remote audio sound amplification, when the sound amplifying host receives near-distance audio signals and remote audio signals, only the near-distance audio signals are subjected to audio pre-processing, and the near-distance audio signals subjected to audio pre-processing are subjected to sound amplification playing, so that the sound amplifying system can perform sound amplification playing on the near-distance audio signals with low audio tone quality loss, and the tone quality of the audio signals is further ensured because the near-distance audio signals are subjected to audio pre-processing.
Referring to fig. 1, fig. 1 is a schematic view of a sound reinforcement system according to the present invention.
The public address system includes public address host computer 100, nearly pronunciation collection system 200 and the pronunciation collection system 300 of far-speaking of saying, nearly pronunciation collection system 200 and the pronunciation collection system 300 of far-speaking are connected with public address host computer 100 respectively of saying, nearly pronunciation collection system 200 of saying can be wireless microphone, far-speaking pronunciation collection system 200 can be wired microphone, nearly pronunciation collection system 200 of saying is used for gathering the audio signal in the first distance scope, and far-speaking pronunciation collection system 300 of speaking is used for gathering the audio signal in the second distance scope, the second distance scope is greater than the first distance scope. The close-talking voice collecting device 200 is connected with the loud-speaking host 100 through a wireless connection technology (the connection between the close-talking voice collecting device and the loud-speaking host 100 is shown by a dotted line), and the far-talking voice collecting device 300 is connected with the loud-speaking host 100 through a line (the connection between the far-talking voice collecting device and the loud-speaking host is shown by a solid line).
As an implementation, the sound amplification host may be as shown in fig. 2.
The embodiment of the invention relates to a sound amplification host machine in a sound amplification system, which comprises: a processor 101, e.g. a CPU, a memory 102, a communication bus 103. Wherein a communication bus 103 is used for enabling the connection communication between these components.
The memory 102 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). As shown in fig. 1, a memory 102, which is a computer-readable storage medium, may include a sound amplification program therein; and the processor 101 may be configured to call the public address program stored in the memory 102 and perform the following operations:
when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, performing audio pre-processing on the first audio signal, wherein the audio pre-processing comprises at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing and gain enhancement processing;
and performing sound amplification playing on the first audio signal after audio preprocessing.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, determining a playing end of the first audio signal;
when the playing end is a terminal of a preset type, executing the step of performing audio preprocessing on the first audio signal;
performing howling suppression processing on the first audio signal after audio preprocessing;
and performing sound amplification playing on the first audio signal subjected to the howling suppression processing.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
when the playing end is a remote terminal in communication connection with the sound amplification host, acquiring a remote audio signal transmitted by the remote terminal;
performing audio preprocessing on the first audio signal and the second audio signal, and performing echo suppression processing on the first audio signal and the second audio signal after the audio preprocessing according to the remote audio signal;
and sending the first audio signal and the second audio signal after the echo suppression processing to a remote terminal.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
detecting whether a third audio signal input by a local audio input module is received;
and when the third audio signal is not received, executing the step of pre-processing the audio of the first audio signal by the audio.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
when the third audio signal is received, performing audio preprocessing on the first audio signal and the third audio signal;
performing audio mixing processing on the first audio signal and the third audio signal after audio preprocessing to enable the third audio signal to serve as a background audio of the processed first audio signal;
and performing sound amplification playing on the first audio signal after the sound mixing processing.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
when the third audio signal is received, judging whether the sound amplification host starts a priority mode of the third audio signal;
executing the step of performing audio preprocessing on the first audio signal and the third audio signal when the priority mode of the third audio signal is not started by the sound amplification host;
and when the priority mode of the third audio signal is started by the sound amplifying host, carrying out audio preprocessing on the third audio signal, and carrying out sound amplifying playing on the third audio signal after the audio preprocessing.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
performing power amplification on the first audio signal after audio pre-processing to obtain a fourth audio signal;
and transmitting the fourth audio signal to a sound box connected with the sound amplifying host so that the sound box performs sound amplifying playing corresponding to the fourth audio signal.
In one embodiment, the processor 101 may be configured to call a public address program stored in the memory 102 and perform the following operations:
detecting whether the near-talking voice acquisition device and the far-talking voice acquisition device acquire audio signals in real time;
when the near-talking voice acquisition device acquires a first audio signal, or when the near-talking voice acquisition device acquires the first audio signal and the far-talking voice acquisition device acquires a second audio signal, executing the step of performing audio pre-processing on the first audio signal;
when the far-speaking voice acquisition device acquires a second audio signal, carrying out audio preprocessing on the second audio signal;
and performing sound amplification playing on the second audio signal after audio preprocessing.
According to the scheme, the sound amplifying system comprises a sound amplifying host, a near-speaking voice acquisition device and a far-speaking voice acquisition device which are respectively connected with the sound amplifying host, wherein the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source, a first audio signal acquired by the near-speaking voice acquisition device and a second audio signal acquired by the far-speaking voice acquisition device are received by the sound amplifying host, and at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing and gain increase processing is performed on the first audio signal, so that sound amplifying playing is performed on the first audio signal after audio preprocessing; because the sound amplifying system supports near-distance and remote audio sound amplification, when the sound amplifying host receives near-distance audio signals and remote audio signals, only the near-distance audio signals are subjected to audio pre-processing, and the near-distance audio signals subjected to audio pre-processing are subjected to sound amplification playing, so that the sound amplifying system can perform sound amplification playing on the near-distance audio signals with low audio tone quality loss, and the tone quality of the audio signals is further ensured because the near-distance audio signals are subjected to audio pre-processing.
Based on the hardware architecture of the sound reinforcement host, the embodiment of the sound reinforcement method of the sound reinforcement system is provided.
Referring to fig. 3, fig. 3 is a first embodiment of the sound amplifying method based on the sound amplifying system of the present invention, and the sound amplifying method of the sound amplifying system includes the following steps:
step S10, when receiving a first audio signal acquired by the close-talking voice acquisition device and a second audio signal acquired by the far-talking voice acquisition device, performing audio pre-processing on the first audio signal, where the audio pre-processing includes at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing, and gain adjustment processing;
in the invention, the sound amplifying system can be applied to places needing sound amplification such as classrooms, large-scale activities and the like, the sound amplifying system comprises a sound amplifying host, and a near-speaking voice acquisition device and a far-speaking voice acquisition device which are connected with the sound amplifying host, wherein the near-speaking voice acquisition device and the far-speaking voice acquisition device can be arranged in a plurality of numbers, the near-speaking voice acquisition device can be a wireless microphone, and the wireless microphone can be a portable microphone.
The voice amplification host comprises a wireless access module, and the wireless access module is used for receiving a first audio signal acquired by the near-talking voice acquisition device; the sound amplification host further comprises a wired access module, and the wired access module is used for receiving a second audio signal collected by the far-speaking voice collection device. The wireless access module receives a first audio signal acquired by the near-talking voice acquisition device through a wireless access technology, wherein the wireless access technology comprises a 2.4GHz wireless technology and Bluetooth.
The near-talking voice acquisition device adopts a 2.4GHz wireless technology, and the sound amplification host needs to be provided with a receiver, so that the aim of rapidly transmitting an audio signal by the near-talking voice acquisition device is fulfilled; when the near-talking voice acquisition device adopts Bluetooth to transmit audio signals, the sound amplification host needs to be provided with a corresponding Bluetooth module; the sound amplification host needs to be paired with the near-talking voice acquisition device in advance.
The sound amplification host is provided with a dodging function, and when the first audio signal and the second audio are received at the same time, only the first audio signal is subjected to sound amplification output, namely only the close-range audio signal is subjected to sound amplification output. Specifically, when receiving the first audio signal and the second audio signal, the sound amplification host performs audio preprocessing on the first audio signal, where the audio preprocessing includes at least one of noise reduction processing, filtering processing, parametric equalization processing, volume adjustment processing, and gain processing, and preferably performs all the above processing on the first audio signal. The audio pre-processing is executed by an input audio processing module in the sound amplification host, the algorithm adopted by the input audio processing module can comprise algorithms such as high-pass filtering, low-pass filtering, parameter equalization, a limiter, a volume controller, a peak value table and self-adaptive automatic noise reduction, and the input audio processing module carries out corresponding audio pre-processing through the algorithms. In the present invention, the order of the audio preprocessing is not limited, but the order of the processing of the audio preprocessing is preferably: filtering processing, parameter equalization processing, volume adjustment processing, gain processing and noise reduction processing.
And step S20, performing sound amplification playing on the first audio signal after audio preprocessing.
The sound amplification host further comprises an audio matrix module and an output audio processing module, when the input audio processing module outputs a first audio signal after audio preprocessing, the first audio signal after audio preprocessing is transmitted to the audio matrix module, the audio matrix module switches and distributes the audio signal, namely, the first audio signal after audio preprocessing input by the input audio processing module is subjected to matrix exchange and then is transmitted to the output audio processing module, the output audio processing module comprises algorithms such as parametric equalization and volume control, and the output audio processing module can amplify the power of the first audio signal after audio preprocessing to obtain a fourth audio signal.
The output audio processing module also comprises a power amplifier output module and a non-power amplifier output module, the power amplifier output module can be connected with the sound box, namely the power amplifier module transmits the fourth audio signal to the sound box, so that the sound box performs sound amplification playing on the fourth audio signal; the non-power amplifier output module can be connected with the recording and broadcasting host, and the fourth audio signal is recorded through the recording and broadcasting host. The fourth audio signal can be simultaneously played by the sound box and recorded by the recording and playing host, and the fourth audio signal can also be transmitted to a remote terminal in communication connection with the sound amplification host.
In the practical application scene, the sound that mr or host sent has big or small, in order to make the personnel in the place hear clearly, can set up minimum volume threshold to the audio signal of public address, the personnel that minimum volume threshold can guarantee the place can hear clearly teacher or host's sound, set up the biggest volume threshold to the audio signal of public address simultaneously, it is too big to avoid teacher or host's sound, lead to audio signal's public address volume too big, thereby cause the hearing to harm to the personnel in the place.
In addition, still can set up the ambient noise sensor, the ambient noise in the ambient noise sensor collection place to send the volume of ambient noise to the public address host computer, the audio signal that the public address broadcast is required in the appropriate adjustment of the volume of public address host computer through the ambient noise, avoid appearing noisy sound and cover the condition of host computer or mr's sound, and can reduce the audio signal that needs the public address output under quiet environment, avoid appearing the too big condition of volume. By the method, the classroom or the activity field achieves dynamic balance and fusion, and easy listening is really implemented.
In the technical scheme provided by this embodiment, the sound amplifying system includes a sound amplifying host, and a near-speaking voice collecting device and a far-speaking voice collecting device which are respectively connected to the sound amplifying host, where a distance between the near-speaking voice collecting device and a sound source is smaller than a distance between the far-speaking voice collecting device and the sound source, and the sound amplifying host receives a first audio signal collected by the near-speaking voice collecting device and a second audio signal collected by the far-speaking voice collecting device, and performs at least one of noise reduction processing, filtering processing, parameter equalization adjustment processing, volume adjustment processing, and gain increase processing on the first audio signal, so as to perform sound amplifying playing on the first audio signal after audio preprocessing; because the sound amplifying system supports near-distance and remote audio sound amplification, when the sound amplifying host receives near-distance audio signals and remote audio signals, only the near-distance audio signals are subjected to audio pre-processing, and the near-distance audio signals subjected to audio pre-processing are subjected to sound amplification playing, so that the sound amplifying system can perform sound amplification playing on the near-distance audio signals with low audio tone quality loss, and the tone quality of the audio signals is further ensured because the near-distance audio signals are subjected to audio pre-processing.
Referring to fig. 4, fig. 4 is a second embodiment of the sound amplifying method of the sound amplifying system according to the present invention, and based on the first embodiment, the sound amplifying method of the sound amplifying system further includes:
step S30, when receiving a first audio signal acquired by the near-talking voice acquisition device and a second audio signal acquired by the far-talking voice acquisition device, determining a playing end of the first audio signal;
step S40, when the playback end is a terminal of a preset type, executing the step of performing audio preprocessing on the first audio signal;
step S50, performing howling suppression processing on the first audio signal after audio preprocessing;
step S60, the first audio signal after the howling suppression processing is played in a sound amplification way;
step S70, when the playing end is a remote terminal in communication connection with the sound reinforcement host, obtaining a remote audio signal transmitted by the remote terminal;
step S80, performing audio preprocessing on the first audio signal and the second audio signal, and performing echo suppression processing on the first audio signal and the second audio signal after the audio preprocessing according to the remote audio signal;
step S90, sending the echo-suppressed first audio signal and the echo-suppressed second audio signal to the remote terminal.
The audio signal can be played locally as well as remotely. The local sound reinforcement refers to local playing of a sound box or other sound reinforcement equipment connected with the sound reinforcement host, and the equipment such as the sound box and the like connected with the sound reinforcement host is set as a playing end of a preset type; the remote playing means that the sound amplification host transmits the acquired audio signal to a terminal connected with the sound amplification host in communication, and the terminal and the sound amplification host realize remote communication, such as a video conference and the like.
When the remote playing is carried out, the sound amplifying system and the remote terminal carry out voice interaction, namely, a sound box connected with the sound amplifying host can play a remote audio signal transmitted by the remote terminal, but the sound amplifying host can transmit an audio signal generated by a teacher or a host to the remote terminal at the same time, and when the audio signal is collected, the remote audio signal is inevitably collected, so that the near-talking and far-talking voice collecting devices are required to collect the audio signal to carry out echo suppression processing, and echo generated by the remote audio signal is eliminated as much as possible. In contrast, when the sound amplification host receives the first audio signal and the second audio signal at the same time, the play end of the first audio signal is determined, when the play end is a remote terminal in communication connection with the sound amplification host, that is, when the interaction mode is between the remote terminal and the sound amplification system, audio preprocessing is required to be performed on the first audio signal and the second audio signal, Echo suppression processing is performed on the first audio signal and the second audio signal after the audio preprocessing according to the remote audio signal (that is, the remote audio signal in the audio signal acquired by the voice acquisition device is eliminated as much as possible), that is, the input audio processing module performs Echo suppression processing on the first audio signal and the second audio signal after the audio preprocessing by an aec (acoustic Echo cancellation) adaptive Echo suppression algorithm, and then the first audio signal and the second audio signal after the Echo suppression processing are sent to the remote terminal, and enabling the remote terminal to play the first audio signal and the second audio signal.
When a sound amplification system carries out local sound amplification, howling cannot be avoided, and in order to reduce the howling generated by an audio signal, howling suppression processing needs to be carried out on the audio signal of the local sound amplification; therefore, when the playing end is a preset type terminal, the input audio processing module performs audio preprocessing on the first audio signal, and then performs howling suppression processing on the first audio signal after the audio preprocessing by using an afc (automatic Feedback suppression) adaptive acoustic Feedback suppression algorithm, so as to perform local amplification playing on the first audio signal after the howling suppression processing.
In the technical scheme provided by this embodiment, when a first audio signal and a second audio signal are received, a playing end of the first audio signal is determined to determine whether the playing end is a remote terminal, and if the playing end is the remote terminal, echo suppression processing needs to be performed on the first audio signal and the second audio signal, so that echo generated by remote playing of the audio signals is reduced; and when the playing end is a local playing end in communication connection with the sound amplification host, howling suppression processing needs to be performed on the first audio signal, so that howling generated by local sound amplification of the first audio signal is reduced.
Referring to fig. 5, fig. 5 shows a third embodiment of the sound amplifying method of the sound amplifying system according to the present invention, and based on the first or second embodiment, after step S10, the method further includes:
step S100, detecting whether a third audio signal input by a local audio input module is received;
step S110, when the third audio signal is not received, performing the audio pre-processing on the first audio signal with the audio;
step S120, when the third audio signal is received, performing audio preprocessing on the first audio signal and the third audio signal;
step S130, performing audio mixing processing on the first audio signal and the third audio signal after audio preprocessing, so that the third audio signal is used as a background audio of the processed first audio signal;
step S140, performing sound amplification playing on the first audio signal after the sound mixing processing.
In this embodiment, the sound amplification host is further provided with a line access module, that is, a local audio input module, the line access module is connectable to an external device, the external device may be an intelligent device such as a computer, and the external device may transmit a sound source to the sound amplification host through the line access module, where the sound source may be used as background music of an audio signal.
In contrast, when the first audio signal and the second audio signal are received, whether a third audio signal input by the local audio input module is received or not is detected, and when the third audio signal is not received, that is, the local audio is not received, it is indicated that the first audio signal has no corresponding background music, and at this time, the first audio signal after audio preprocessing can be subjected to sound amplification playing; when the third audio signal is received, it is indicated that the first audio signal has corresponding background music, at this time, the input audio processing module performs audio pre-processing on the first audio signal and the third audio signal, then performs audio mixing processing on the first audio signal and the third audio signal after the audio pre-processing by adopting an audio mixing algorithm, and performs sound amplification playing on the first audio signal and the third audio signal after the audio mixing processing.
The above-mentioned scheme is adopted for local sound amplification, and when the playing end of the first audio signal is a remote terminal, the first, second and third audio signals are subjected to audio preprocessing, then the first, second and third audio signals subjected to audio preprocessing are subjected to echo suppression processing according to the remote audio signal sent by the remote terminal, and then the three are sent to the remote terminal together.
In addition, the sound-mixing function can be set on the sound-amplifying host, if the sound-mixing function of the sound-amplifying host is started, the first audio signal and the third audio signal need to be subjected to sound-mixing processing, and if the sound-mixing function of the sound-amplifying host is not started, the sound-amplifying playing is only performed on the first audio signal.
It should be noted that, when the sound-mixing function is not started by the sound-amplifying host, the sound-amplifying priorities of the first, second, and third audio signals may be set, for example, the sound-amplifying priority of the first audio signal is set to be greater than the sound-amplifying priority of the third audio signal, and the sound-amplifying priority of the third audio signal is set to be greater than the sound-amplifying priority of the second audio signal, and the user may perform corresponding setting on the sound-amplifying host, for example, when a teacher plays a courseware, the sound-amplifying priority of a courseware (the third audio signal) is set to be the maximum, and the sound-amplifying priority of a classmatic sound (the second audio signal) is set to be the minimum.
In one embodiment, when there are three audio signals, only the near-talking audio signal is played in a sound amplifying manner, that is, the first audio signal is played in a sound amplifying manner; in another embodiment, if there are a plurality of audio signals, the sound amplification volumes of the respective audio signals are determined according to the sound amplification priorities, and the volume of the audio signal with the higher sound amplification priority is larger. In contrast, a multi-audio volume processing function can be set, that is, when the multi-audio volume processing function is started by the sound amplification host, the corresponding volume is determined according to the sound amplification priority of each audio signal, and meanwhile, the audio signals are subjected to audio preprocessing and then are subjected to sound amplification playing; when the sound amplification host computer starts the multi-audio volume processing function, only the audio signal with the maximum sound amplification priority is subjected to audio pre-processing, and the audio signal subjected to audio pre-processing is played in a sound amplification mode.
In the technical solution provided in this embodiment, the public address host detects whether a third audio signal of background music, which is an audio signal to be broadcast in public address, is received, and if so, performs audio mixing processing on the audio signal and the third audio signal, so as to blend the audio signal to be broadcast in public address into the background music.
Referring to fig. 6, fig. 6 is a fourth embodiment of the sound reinforcement method of the sound reinforcement system according to the present invention, and based on the first to third embodiments, before the step S10, the method further includes:
step S150, detecting whether the near-talking voice acquisition device and the far-talking voice acquisition device acquire audio signals in real time;
step S160, when the near-speaking voice acquisition device acquires a first audio signal, or when the near-speaking voice acquisition device acquires the first audio signal and the far-speaking voice acquisition devices acquire a second audio signal, executing the step of performing audio pre-processing on the first audio signal;
step S170, when the far-speaking voice acquisition device acquires a second audio signal, performing audio pre-processing on the second audio signal;
step S180, the second audio signal after audio preprocessing is played in a sound amplifying mode;
the sound amplification host can detect whether the near-talking voice acquisition device and the far-talking voice acquisition device acquire audio signals in real time, and if the near-talking voice acquisition device acquires a first audio signal or the near-talking voice acquisition device acquires a first audio signal and the far-talking voice acquisition device acquires a second audio signal, the near-talking audio signal is subjected to sound amplification playing; when the sound amplification host only receives the second audio signal, the second audio signal needs to be subjected to audio preprocessing, and finally the second audio signal subjected to audio preprocessing is subjected to sound amplification playing.
The invention also provides an acoustic amplification system, which comprises an acoustic amplification host, at least one near-speaking voice acquisition device and at least one far-speaking voice acquisition device, wherein the near-speaking voice acquisition device and the far-speaking voice acquisition device are respectively connected with the acoustic amplification host, and the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source; the public address host comprises a processor, a memory and a public address program stored on the memory and capable of running on the processor, wherein the public address program realizes the steps of the public address method of the public address system according to the above embodiment when being executed by the processor.
The present invention also provides a computer-readable storage medium, which stores a sound amplification program, which when executed by the processor implements the steps of the sound amplification method of the sound amplification system as described in the above embodiments.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM/RAM, magnetic disk, optical disk) as described above, and includes several instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an audio processor, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. The sound reinforcement method of the sound reinforcement system is characterized in that the sound reinforcement system comprises a sound reinforcement host, a local audio input module, at least one near-speaking voice acquisition device and at least one far-speaking voice acquisition device, wherein the near-speaking voice acquisition device and the far-speaking voice acquisition device are respectively connected with the sound reinforcement host, and the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source; the sound amplifying method of the sound amplifying system comprises the following steps:
when a first audio signal collected by the near-speaking voice collection device and a second audio signal collected by the far-speaking voice collection device are received, determining a playing end of the first audio signal;
when the playing end is a preset type terminal, performing audio preprocessing on the first audio signal, performing howling suppression processing on the first audio signal after the audio preprocessing, and performing sound amplification playing on the first audio signal after the howling suppression processing through local sound amplification, wherein the audio preprocessing comprises performing filtering processing, parametric equalization processing, volume adjustment processing, gain processing and noise reduction processing in sequence, the local sound amplification is performed through sound amplification equipment connected with a sound amplification host locally, and the first audio signal subjected to sound amplification playing is provided with a minimum volume threshold and a maximum volume threshold;
when the playing end is a remote terminal in communication connection with the sound amplification host, the remote audio signal transmitted by the remote terminal is acquired, the first audio signal and the second audio signal are subjected to audio preprocessing, echo suppression processing is performed on the first audio signal and the second audio signal after the audio preprocessing by the remote audio signal, the first audio signal, the second audio signal and a third audio signal after the echo suppression processing are sent to the remote terminal, and the third audio signal is a signal input by the local audio input module.
2. The sound reinforcement method for a sound reinforcement system according to claim 1, further comprising:
detecting whether a third audio signal input by the local audio input module is received;
and when the third audio signal is not received, executing the step of performing audio pre-processing on the first audio signal.
3. The sound amplifying method of the sound amplifying system as claimed in claim 2, wherein the step of detecting whether the third audio signal inputted from the local audio input module is received further comprises:
when the third audio signal is received, performing audio preprocessing on the first audio signal and the third audio signal;
performing audio mixing processing on the first audio signal and the third audio signal after audio preprocessing to enable the third audio signal to serve as a background audio of the processed first audio signal;
and performing sound amplification playing on the first audio signal after sound mixing processing.
4. The sound reinforcement method for a sound reinforcement system according to claim 3, wherein said step of detecting whether a third audio signal is received from a local audio input module further comprises:
when the third audio signal is received, judging whether the sound amplification host starts a priority mode of the third audio signal;
executing the step of performing audio preprocessing on the first audio signal and the third audio signal when the priority mode of the third audio signal is not started by the sound amplification host;
and when the priority mode of the third audio signal is started by the sound amplifying host, carrying out audio preprocessing on the third audio signal, and carrying out sound amplifying playing on the third audio signal after the audio preprocessing.
5. The sound reinforcement method for a sound reinforcement system according to any one of claims 1-4, wherein said step of playing the howling suppressed first audio signal in sound reinforcement through local sound reinforcement comprises:
performing power amplification on the first audio signal after the howling suppression processing to obtain a fourth audio signal;
and transmitting the fourth audio signal to a sound box connected with the sound amplifying host so that the sound box performs sound amplifying playing corresponding to the fourth audio signal.
6. The sound amplification method of a sound amplification system according to any one of claims 1 to 4, wherein the sound amplification method of a sound amplification system further comprises:
detecting whether the near-talking voice acquisition device and the far-talking voice acquisition device acquire audio signals in real time;
when the near-talking voice acquisition device acquires the first audio signal, or when the near-talking voice acquisition device acquires the first audio signal and the far-talking voice acquisition device acquires the second audio signal, executing the step of performing audio pre-processing on the first audio signal;
when the second audio signal is acquired by the far-speaking voice acquisition device, carrying out audio preprocessing on the second audio signal;
and performing sound amplification playing on the second audio signal after audio preprocessing.
7. The sound reinforcement system is characterized by comprising a sound reinforcement host, at least one near-speaking voice acquisition device and at least one far-speaking voice acquisition device, wherein the near-speaking voice acquisition device and the far-speaking voice acquisition device are respectively connected with the sound reinforcement host, and the distance between the near-speaking voice acquisition device and a sound source is smaller than the distance between the far-speaking voice acquisition device and the sound source; the public address host comprises a processor, a memory and a public address program stored on the memory and operable on the processor, the public address program, when executed by the processor, implementing the steps of the public address method of the public address system as claimed in any one of claims 1 to 6.
8. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a sound amplification program, which when executed by a processor implements the steps of the sound amplification method of the sound amplification system according to any one of claims 1 to 6.
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| CN112104963B (en) * | 2020-10-30 | 2022-03-01 | 北京声智科技有限公司 | Following type robot sound amplification method and system |
| CN112911482B (en) * | 2021-03-15 | 2023-03-24 | 世邦通信股份有限公司 | System and method for automatically adjusting sound amplification area and area volume |
| CN116567483B (en) * | 2023-04-18 | 2024-02-09 | 北京万讯博通科技发展有限公司 | Intelligent management method and system for infrared wireless teaching sound expansion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179295A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and communication audio processing apparatus |
| CN201167379Y (en) * | 2008-03-20 | 2008-12-17 | 上海华平信息技术股份有限公司 | Videoconference system and echo eliminating apparatus for the same |
| CN203827453U (en) * | 2013-11-29 | 2014-09-10 | 广州华工信元通信技术有限公司 | Video conference system |
| CN107801141A (en) * | 2017-10-10 | 2018-03-13 | 江苏中协智能科技有限公司 | A kind of auditorium sound reinforcement system |
| CN108449691A (en) * | 2018-05-04 | 2018-08-24 | 科大讯飞股份有限公司 | A kind of sound pick up equipment and sound source distance determine method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8442833B2 (en) * | 2009-02-17 | 2013-05-14 | Sony Computer Entertainment Inc. | Speech processing with source location estimation using signals from two or more microphones |
| CN107483731A (en) * | 2017-08-18 | 2017-12-15 | 广东欧珀移动通信有限公司 | Control method, device and the storage medium and mobile terminal of audio broadcast sound volume |
| CN107786751A (en) * | 2017-10-31 | 2018-03-09 | 维沃移动通信有限公司 | A kind of method for broadcasting multimedia file and mobile terminal |
| CN107766030A (en) * | 2017-11-13 | 2018-03-06 | 百度在线网络技术（北京）有限公司 | Volume adjusting method, device, equipment and computer-readable medium |
| CN108681440A (en) * | 2018-04-03 | 2018-10-19 | 百度在线网络技术（北京）有限公司 | A kind of smart machine method for controlling volume and system |
| CN108845787B (en) * | 2018-06-11 | 2022-03-01 | 北京小米移动软件有限公司 | Audio adjusting method, device, terminal and storage medium |
-
2018
- 2018-12-27 CN CN201811619254.6A patent/CN109600703B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101179295A (en) * | 2006-11-10 | 2008-05-14 | 索尼株式会社 | Echo canceller and communication audio processing apparatus |
| CN201167379Y (en) * | 2008-03-20 | 2008-12-17 | 上海华平信息技术股份有限公司 | Videoconference system and echo eliminating apparatus for the same |
| CN203827453U (en) * | 2013-11-29 | 2014-09-10 | 广州华工信元通信技术有限公司 | Video conference system |
| CN107801141A (en) * | 2017-10-10 | 2018-03-13 | 江苏中协智能科技有限公司 | A kind of auditorium sound reinforcement system |
| CN108449691A (en) * | 2018-05-04 | 2018-08-24 | 科大讯飞股份有限公司 | A kind of sound pick up equipment and sound source distance determine method |
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|---|---|
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