CN108462763B - Noise reduction terminal and noise reduction method - Google Patents
Noise reduction terminal and noise reduction method Download PDFInfo
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- CN108462763B CN108462763B CN201710097611.6A CN201710097611A CN108462763B CN 108462763 B CN108462763 B CN 108462763B CN 201710097611 A CN201710097611 A CN 201710097611A CN 108462763 B CN108462763 B CN 108462763B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/175—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound
- G10K11/178—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
- H04M1/724—User interfaces specially adapted for cordless or mobile telephones
- H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
- H04M1/72454—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to context-related or environment-related conditions
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
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Abstract
The invention provides a noise reduction terminal and a noise reduction method. The noise reduction terminal of the present invention includes: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and two auxiliary voice receivers, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor. The auxiliary voice receiver is used for acquiring a first noise signal of the current environment; the processor is used for obtaining a first noise reduction signal according to the first noise signal; the loudspeaker is used for emitting first noise reduction sound waves according to the first noise reduction signals, and the receiver is used for emitting second noise reduction sound waves according to the first noise reduction signals; the reference speech receiver is used for acquiring speech signals and/or noise signals. The noise reduction terminal and the noise reduction method can reduce the noise of the environment in the conversation process, the recording process or the music playing process while ensuring that the original structure of the terminal is not influenced by the noise reduction structure, and improve the use experience of users.
Description
Technical Field
The invention relates to notification engineering technology, in particular to a noise reduction terminal and a noise reduction method.
Background
The use of the intelligent mobile terminal is more popular at present, so that the daily life of a user is greatly facilitated.
The voice call function, the recording function, the music playing function and the like are common functions on the mobile terminal at present, and if the functions are used in a noisy environment, the call effect, the recording effect or the music playing effect of a user can be influenced due to larger environmental noise. In order to achieve a better call effect recording effect or music playing effect, a user generally increases the volume or uses headphones or searches for a quiet place to perform call, recording or music playing, so that loss of a terminal and harm to ears are caused, and the use experience of the user is affected.
Disclosure of Invention
The invention provides a noise reduction terminal and a noise reduction method, which are used for overcoming the loss of the terminal and the harm to human ears caused by the fact that the terminal in the prior art has no noise reduction function.
The invention provides a noise reduction terminal, which comprises: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and at least one auxiliary voice receiver, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor;
when the noise reduction terminal is in a recording state, the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
The processor is used for obtaining a first noise reduction signal according to the first noise signal and sending the first noise reduction signal to the loudspeaker and/or the receiver;
the loudspeaker is used for emitting first noise reduction sound waves according to the first noise reduction signals, the receiver is used for emitting second noise reduction sound waves according to the first noise reduction signals, and the first noise reduction sound waves and/or the second noise reduction sound waves are used for canceling noise of the current environment;
the reference voice receiver is used for acquiring a first voice signal and sending the first voice signal to the processor, wherein the first voice signal is a signal corresponding to a sound to be recorded.
The noise reduction terminal as described above, when the noise reduction terminal is in a call state and the opposite terminal user utters a voice,
the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
the reference voice receiver is further used for acquiring a second noise signal of the current environment and sending the second noise signal to the processor;
the processor is further configured to obtain a second noise reduction signal according to the first noise signal and the second noise signal, and send the second noise reduction signal to the speaker and/or receiver;
The loudspeaker is used for sending out third noise-reducing sound waves according to the second noise-reducing signals, the receiver is used for sending out fourth noise-reducing sound waves according to the second noise-reducing signals, and the third noise-reducing sound waves and/or the fourth noise-reducing sound waves are used for canceling noise of the current environment.
The noise reduction terminal as described above, when the noise reduction terminal is in a call state and a user to which the noise reduction terminal belongs utters a voice,
the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
the reference voice receiver is further configured to obtain a second voice signal, and send the second voice signal to the processor, where the second voice signal is a signal corresponding to a second voice, and the second voice includes a voice sent by a user to which the noise reduction terminal belongs and noise of a current environment;
the processor is further configured to synthesize a third voice signal according to the first noise reduction signal and the second voice signal, and send the third voice signal to a user device of a peer user, so that the peer user listens to a sound corresponding to the third voice signal.
The noise reduction terminal is characterized in that the processor, the loudspeaker, the receiver, the reference voice receiver and the at least one auxiliary voice receiver are arranged inside a shell of the noise reduction terminal, and the loudspeaker, the receiver, the reference voice receiver and the at least one auxiliary voice receiver are arranged close to the side wall of the shell.
The noise reduction terminal as described above, wherein the reference voice receiver is disposed close to the speaker; the auxiliary voice receiver is disposed proximate the receiver.
The invention also provides a method for reducing noise of the terminal, which is a method for reducing noise by applying the noise reduction terminal, and when the terminal is in a recording state, the method comprises the following steps:
acquiring a first noise signal of the current environment obtained by an auxiliary voice receiver;
obtaining a first noise reduction signal according to the first noise signal;
and sending the first noise reduction signal to a loudspeaker and/or a receiver so that the loudspeaker sends out a first noise reduction sound wave according to the first noise reduction signal, and/or the receiver sends out a second noise reduction sound wave according to the first noise reduction signal, wherein the first noise reduction sound wave and/or the second noise reduction sound wave are used for canceling noise of the current environment, so that a reference voice receiver obtains a clear first voice signal, and the first voice signal is a signal corresponding to the sound to be recorded.
The method comprises the following steps that when the terminal is in a call state and a voice is sent by a user at the opposite end:
acquiring a first noise signal of the current environment obtained by the auxiliary voice receiver;
acquiring a second noise signal of the current environment obtained by a reference voice receiver;
obtaining a second noise reduction signal according to the first noise signal and the second noise signal;
and sending the second noise reduction signal to the loudspeaker and/or the receiver so that the loudspeaker sends out a third noise reduction sound wave according to the second noise reduction signal, and/or the receiver sends out a fourth noise reduction sound wave according to the second noise reduction signal, wherein the third noise reduction sound wave and/or the fourth noise reduction sound wave are used for canceling the noise of the current environment.
The method comprises the following steps that when the terminal is in a call state and a user to which the noise reduction terminal belongs sends out voice, the method comprises the following steps:
acquiring a second voice signal obtained by the reference voice receiver, wherein the second voice signal is a signal corresponding to the second voice, and the second voice comprises voice sent by a user to which the noise reduction terminal belongs and noise of the current environment;
acquiring a first noise signal of the current environment obtained by the auxiliary voice receiver;
Obtaining a first noise reduction signal according to the first noise signal, and synthesizing a third voice signal according to the first noise reduction signal and the second voice signal;
and sending the third voice signal to user equipment of the opposite terminal user.
The invention provides a noise reduction terminal and a noise reduction method. The noise reduction terminal of the present invention includes: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and two auxiliary voice receivers, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor. The auxiliary voice receiver is used for acquiring a first noise signal of the current environment and transmitting the first noise signal to the processor; the processor is used for obtaining a first noise reduction signal according to the first noise signal and sending the first noise reduction signal to the loudspeaker and/or the receiver; the loudspeaker is used for emitting first noise-reducing sound waves according to the first noise-reducing signals, the receiver is used for emitting second noise-reducing sound waves according to the first noise-reducing signals, and the first noise-reducing sound waves and/or the second noise-reducing sound waves are used for counteracting noise of the current environment; the reference voice receiver is used for acquiring a first voice signal and sending the first voice signal to the processor, wherein the first voice signal is a signal corresponding to a sound to be recorded. The noise reduction terminal provided by the invention can obtain clear sound recording while ensuring that the original structure of the terminal is not influenced by the noise reduction structure, so that a user to which the noise reduction terminal belongs can hear clear sound sent by a user equipment at the opposite end and the opposite end user can hear sound sent by the user to which the noise reduction terminal belongs, and the use experience of the user is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural diagram of a first embodiment of a noise reduction terminal provided by the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of a noise reduction terminal provided by the present invention;
fig. 3 is a schematic structural diagram one of a third embodiment of a noise reduction terminal provided by the present invention;
fig. 4 is a schematic structural diagram two of a fourth embodiment of a noise reduction terminal provided by the present invention;
FIG. 5 is a schematic flow chart of a noise reduction method according to the present invention;
FIG. 6 is a second schematic flow chart of the noise reduction method according to the present invention;
fig. 7 is a schematic flow chart of a noise reduction method provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a schematic structural diagram of a first embodiment of a noise reduction terminal provided by the present invention, where the noise reduction terminal in the present embodiment can reduce noise in a current environment when in a recording state, so as to obtain a clear recording. As shown in fig. 1, the noise reduction terminal of the present embodiment may include: the processor 101, the speaker 102, the receiver 103, the reference voice receiver 104, and the two auxiliary voice receivers 105, the reference voice receiver 104, each of the auxiliary voice receivers 105, the speaker 102, and the receiver 103 are connected to the processor 101.
The auxiliary voice receiver 105 is configured to acquire a first noise signal of the current environment and send the first noise signal to the processor 101;
the processor 101 is configured to obtain a first noise reduction signal according to the first noise signal, and send the first noise reduction signal to the speaker 102 and/or the receiver 103;
the loudspeaker 102 is used for emitting a first noise reduction sound wave according to the first noise reduction signal, the receiver 103 is used for emitting a second noise reduction sound wave according to the first noise reduction signal, and the first noise reduction sound wave and/or the second noise reduction sound wave are used for canceling the noise of the current environment;
the reference voice receiver 104 is configured to obtain a first voice signal, and send the first voice signal to the processor 101, where the first voice signal is a signal corresponding to a sound to be recorded.
Specifically, the processor, the speaker, the receiver, the reference voice receiver and the two auxiliary voice receivers of the embodiment are disposed inside the housing of the noise reduction terminal, and the speaker, the receiver, the reference voice receiver and the two auxiliary voice receivers are disposed close to the side wall of the housing. In fig. 1, for clarity of illustration, the connection relationship between the structures is not shown, and a broken line is used to indicate that the processor processes the inside of the housing of the noise reduction terminal.
The auxiliary voice receiver of this embodiment is preferably disposed near the receiver, but may be disposed not near the receiver, such as one disposed on the front of the mobile phone, one disposed on the back of the mobile phone, or both. As shown in fig. 1, the two auxiliary voice receivers of the present embodiment are disposed on both sides of the receiver and are symmetrical with respect to the receiver. The reference speech receiver of the present embodiment is preferably located close to the speaker. Because receiver sets up at the top of terminal generally, and the speaker sets up in the bottom of terminal generally, and auxiliary voice receiver is close to the receiver setting, and reference voice receiver is close to the speaker setting can make auxiliary voice receiver and reference voice receiver distance ratio far away to make the sound of recording clear.
The reference voice receiver in this embodiment is a reference microphone, and the auxiliary voice receiver is an auxiliary microphone. It will be appreciated by those skilled in the art that the reference microphone and the auxiliary microphone are of the same structure, and the microphone closest to the sound source to be recorded is the reference microphone.
When the noise reduction terminal of the embodiment is used for recording, the distance between the sound source of the sound to be recorded and the reference microphone needs to be as large as possible, so that the recorded sound is clear.
The processor in this embodiment is a central processor of the noise reduction terminal itself. The noise reduction terminal of the embodiment does not additionally increase a noise reduction structure or a noise reduction circuit, and the original structure of the terminal is adopted to realize noise reduction in the recording process, so that the effect that the original structure of the terminal cannot be influenced by the noise reduction structure is realized, and meanwhile, clear recording is obtained.
The following describes the operation of the noise reduction terminal of the present embodiment in detail.
After the noise of the current environment is received by the two auxiliary microphones, the noise is converted into a simulated first noise signal by the auxiliary microphones, and then the two auxiliary microphones respectively send the first noise signal obtained by the two auxiliary microphones to the processor 101; after receiving the first noise signals sent by the two auxiliary microphones, the processor 101 performs an averaging process on the two first noise signals to obtain an averaged first noise signal, and then obtains a first noise reduction signal according to the averaged first noise signal, where the first noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the first noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the first noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
After the processor 101 obtains the first noise reduction signal, the first noise reduction signal is sent to the speaker 102 and/or the receiver 103. The speaker 102 emits a first noise-reducing sound wave according to the first noise-reducing signal, and the receiver 103 emits a second noise-reducing sound wave according to the first noise-reducing signal, where the first noise-reducing sound wave and/or the second noise-reducing sound wave are used to cancel noise of the current environment. That is, noise-reduced sound waves cancel noise in the current environment after being emitted through the speaker 102 and/or the receiver 103. At this time, since the noise of the current environment is cancelled by the noise-reducing sound wave, the reference microphone 104 can obtain a clear signal of the sound to be recorded, and send the signal of the sound to be recorded to the processor 101 for storage.
Through the above process, clear sound recording is obtained.
The noise reduction terminal of this embodiment includes: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and two auxiliary voice receivers, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor. The auxiliary voice receiver is used for acquiring a first noise signal of the current environment and transmitting the first noise signal to the processor; the processor is used for obtaining a first noise reduction signal according to the first noise signal and sending the first noise reduction signal to the loudspeaker and/or the receiver; the loudspeaker is used for emitting first noise-reducing sound waves according to the first noise-reducing signals, the receiver is used for emitting second noise-reducing sound waves according to the first noise-reducing signals, and the first noise-reducing sound waves and/or the second noise-reducing sound waves are used for counteracting noise of the current environment; the reference voice receiver is used for acquiring a first voice signal and sending the first voice signal to the processor, wherein the first voice signal is a signal corresponding to a sound to be recorded. The noise reduction terminal of the embodiment can obtain clear recording and improve the use experience of a user while ensuring that the original structure of the terminal is not influenced by the noise reduction structure.
Fig. 2 is a schematic structural diagram of a second embodiment of a noise reduction terminal according to the present invention, where the noise reduction terminal of the present embodiment can reduce noise in a current environment when a user at an opposite end is in a call state and the user at the opposite end makes a voice, so as to obtain a clear voice of the user at the opposite end. As shown in fig. 2, the noise reduction terminal of the present embodiment may include: processor 101, speaker 102, receiver 103, reference speech receiver 104, and an auxiliary speech receiver 105, reference speech receiver 104, auxiliary speech receiver 105, speaker 102, and receiver 103 are all coupled to processor 101.
The auxiliary voice receiver 105 is configured to acquire a first noise signal of the current environment and send the first noise signal to the processor 101;
the reference voice receiver 104 is configured to acquire a second noise signal of the current environment, and send the second noise signal to the processor 101;
the processor 101 is further configured to obtain a second noise reduction signal according to the first noise signal and the second noise signal, and send the second noise reduction signal to the speaker 102 and/or the receiver 103;
the speaker 102 is configured to emit a third noise-reducing sound wave according to the second noise-reducing signal, the receiver 103 is configured to emit a fourth noise-reducing sound wave according to the second noise-reducing signal, and the third noise-reducing sound wave and/or the fourth noise-reducing sound wave are configured to cancel noise of the current environment.
Specifically, the processor 101, the speaker 102, the receiver 103, the reference voice receiver 104, and one auxiliary voice receiver 105 of the present embodiment are disposed inside the housing of the noise reduction terminal, and the speaker 102, the receiver 103, the reference voice receiver 104, and the auxiliary voice receiver 105 are disposed near the side wall of the housing. In fig. 2, for clarity of illustration, the connection relationship between the structures is not shown, and a dotted line is used to indicate that the processor 101 is located inside the housing of the noise reduction terminal and is not visible from the outside.
Preferably, the auxiliary voice receiver 105 of the present embodiment is disposed close to the receiver 103, and the reference voice receiver 104 of the present embodiment is preferably disposed close to the speaker 102. The auxiliary voice receiver 105 is arranged close to the receiver 103, so that noise received by the auxiliary voice receiver 105 is as same as noise of the environment where the receiver 103 is located as possible, and the noise reduction effect is good. In addition, since the receiver 103 is generally disposed at the top of the terminal, the speaker 102 is generally disposed at the bottom of the terminal, the auxiliary voice receiver 105 is disposed close to the receiver 103, and the reference voice receiver 104 is disposed close to the speaker 102, so that the auxiliary voice receiver 105 and the reference voice receiver 104 are far away from each other, so that the noise signal acquired in the embodiment can fully reflect the noise of the current environment as much as possible.
The reference voice receiver 104 in this embodiment is a reference microphone, and the auxiliary voice receiver 105 is an auxiliary microphone. It will be appreciated by those skilled in the art that the reference microphone and the auxiliary microphone are of the same construction.
The processor 101 in this embodiment is a central processor of the noise reduction terminal itself. The noise reduction terminal of the embodiment does not additionally increase a noise reduction structure or a noise reduction circuit, and noise reduction is realized by adopting the structure of the terminal, so that clear sound sent by a user at the opposite end through user equipment is listened to while the original structure of the terminal is ensured not to be influenced by the noise reduction structure.
The following describes the operation of the noise reduction terminal of the present embodiment in detail.
After the noise of the current environment is received by the auxiliary microphone and the reference microphone respectively, the noise of the current environment is converted into a first noise signal by the auxiliary microphone, the noise of the current environment is converted into a second noise signal by the reference microphone, then the auxiliary microphone sends the first noise signal to the processor 101, and the reference microphone sends the second noise signal to the processor 101, wherein the second noise signal and the first noise signal can be the same or different; after receiving the first noise signal and the second noise signal, the processor 101 performs an averaging process on the first noise signal and the second noise signal to obtain an averaged third noise signal, and then obtains a second noise reduction signal according to the third noise signal. The second noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the second noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the second noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
After the processor 101 obtains the second noise reduction signal, the second noise reduction signal is sent to the speaker 102 and/or the receiver 103. The speaker 102 emits a third noise-reducing sound wave according to the second noise-reducing signal, and the receiver 103 emits a fourth noise-reducing sound wave according to the second noise-reducing signal, where the third noise-reducing sound wave and/or the fourth noise-reducing sound wave are used to cancel noise of the current environment. That is to say noise-reducing sound waves are cancelled out by the current ambient noise after being emitted through the loudspeaker 102 and/or the receiver 103. At this time, because the noise of the current environment is counteracted by the noise-reducing sound wave, the user to which the noise-reducing terminal belongs can hear the sound sent by the opposite-end user through the user equipment.
By adopting the noise reduction terminal to communicate, the loss of the terminal and the harm to human ears caused by the increase of the communication sound quantity of the terminal by the user of the noise reduction terminal in a noisy environment are avoided, and the use experience of the user is improved.
It can be understood by those skilled in the art that the noise reduction terminal of the present embodiment may also reduce noise of the current environment when in a music playing state.
The noise reduction terminal of this embodiment includes: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and two auxiliary voice receivers, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor. The auxiliary voice receiver is used for acquiring a first noise signal of the current environment and transmitting the first noise signal to the processor; the reference voice receiver is used for acquiring a second noise signal of the current environment and transmitting the second noise signal to the processor; the processor is further used for obtaining a second noise reduction signal according to the first noise signal and the second noise signal, and sending the second noise reduction signal to the loudspeaker and/or the receiver; the loudspeaker is used for sending out third noise-reducing sound waves according to the second noise-reducing signals, the receiver is used for sending out fourth noise-reducing sound waves according to the second noise-reducing signals, and the third noise-reducing sound waves and/or the fourth noise-reducing sound waves are used for counteracting noise of the current environment. The noise reduction terminal in this embodiment can not receive the influence of noise reduction structure in guaranteeing the original structure of terminal, and clear hearing is opposite terminal user through the sound that user equipment sent, has avoided increasing the loss of terminal and to the injury of people's ear of the conversation volume of terminal in noisy environment, has promoted user's use experience.
Fig. 3 is a schematic structural diagram one of a third embodiment of the noise reduction terminal provided by the present invention, and fig. 4 is a schematic structural diagram two of a third embodiment of the noise reduction terminal provided by the present invention, where the noise reduction terminal of the present embodiment can reduce noise in the current environment when a user to which the noise reduction terminal belongs is in a call state and the user to which the noise reduction terminal belongs makes a voice, so that an opposite user can hear a sound made by the user to which the clear noise reduction terminal belongs. As shown in fig. 3 to 4, the noise reduction terminal of the present embodiment may include: processor 101, speaker 102, receiver 103, reference speech receiver 104, and three auxiliary speech receivers 105, reference speech receiver 104, auxiliary speech receiver 105, speaker 102, and receiver 103 are all coupled to processor 101.
The auxiliary voice receiver 105 is configured to acquire a first noise signal of the current environment and send the first noise signal to the processor 101;
the reference voice receiver 104 is configured to obtain a second voice signal, and send the second voice signal to the processor 101, where the second voice signal is a signal corresponding to the second voice, and the second voice includes voice sent by a user to which the noise reduction terminal belongs and noise of a current environment;
the processor 101 is configured to synthesize a third voice signal according to the first noise reduction signal and the second voice signal, and send the third voice signal to a user device of the opposite terminal user, so that the opposite terminal user listens to a sound corresponding to the third voice signal.
Specifically, the processor 101, the speaker 102, the receiver 103, the reference voice receiver 104, and the three auxiliary voice receivers 105 of the present embodiment are disposed inside the housing of the noise reduction terminal, and the speaker 102, the receiver 103, the reference voice receiver 104, and the auxiliary voice receivers 105 are disposed near the side walls of the housing. In fig. 3, for clarity of illustration, the connection relationship between the structures is not shown, and a dotted line is used to indicate that the processor 101 is located inside the housing of the noise reduction terminal and is not visible from the outside.
The auxiliary speech receiver 105 of the present embodiment is preferably located close to the receiver 103 and the reference speech receiver 104 is preferably located close to the speaker 102. The reference voice receiver 104 is disposed close to the speaker 102, so that a clear sound of a user to whom the noise reduction terminal belongs can be obtained, because the speaker 102 is generally disposed at the bottom of the terminal, and the mouth is generally close to the speaker 102 when the user speaks. In addition, since the receiver 103 is generally disposed at the top of the terminal, the speaker 102 is generally disposed at the bottom of the terminal, the auxiliary voice receiver 105 is disposed close to the receiver, and the reference voice receiver 104 is disposed close to the speaker, so that the distance between the auxiliary voice receiver 105 and the reference voice receiver 104 is relatively long, and thus the voice of the user belonging to the noise reduction terminal received by the reference voice receiver 104 is relatively clear, and the noise of the current environment received by the auxiliary voice receiver 105 is relatively clear. As shown in fig. 3 to 4, in the noise reduction terminal of the present embodiment, two auxiliary voice receivers 105 are disposed on the front surface of the noise reduction terminal, and the other auxiliary voice receiver 105 is disposed on the face of the noise reduction terminal, both being disposed near the receiver 103. At present, the arrangement modes shown in fig. 3 and 4 may not be adopted, and the present embodiment does not limit the arrangement modes of the auxiliary voice receiver and the reference voice receiver.
The reference voice receiver 104 in this embodiment is a reference microphone, and the auxiliary voice receiver 105 is an auxiliary microphone. It will be appreciated by those skilled in the art that the reference microphone and the auxiliary microphone are of the same construction.
The processor 101 in this embodiment is a central processor of the noise reduction terminal itself. The noise reduction terminal of the embodiment does not additionally increase a noise reduction structure or a noise reduction circuit, and the noise reduction is realized by adopting the structure of the terminal, so that clear voice is sent to the opposite terminal user while the original structure of the terminal is ensured not to be influenced by the noise reduction structure.
The following describes the operation of the noise reduction terminal of the present embodiment in detail.
After the noise of the current environment is received by the three auxiliary microphones 105, the noise of the current environment is converted into first noise signals by the auxiliary microphones 105, and the first noise signals corresponding to the auxiliary microphones 105 may be the same or different. Each auxiliary microphone 105 then sends the respective acquired first noise signal to the processor 101; the reference microphone 104 receives a second voice, which is converted into a second voice signal by the reference microphone, and transmits the second voice signal to the processor 101, wherein the second voice includes a voice uttered by a user to whom the noise reduction terminal belongs and noise of a current environment.
After receiving the first noise signals transmitted by the auxiliary microphones 105, the processor 101 averages the first noise signals to obtain averaged noise signals, and then obtains a first noise reduction signal according to the averaged noise signals. The first noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the first noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the first noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
After the processor 101 obtains the first noise reduction signal, the first noise reduction signal is added to the second voice signal, and environmental noise in the second voice signal is cancelled, so as to obtain a third voice signal. Because the third voice signal does not contain environmental noise, after the third voice signal is sent to the user equipment of the opposite terminal, the user of the opposite terminal can hear the sound made by the user to which the clear noise reduction terminal belongs.
By adopting the noise reduction terminal to communicate, the loss of the terminal and the harm to human ears caused by the increase of the voice quantity of the user of the noise reduction terminal in a noisy environment are avoided, and the use experience of the user is improved.
The noise reduction terminal of this embodiment includes: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and two auxiliary voice receivers, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor. The auxiliary voice receiver is used for acquiring a first noise signal of the current environment and transmitting the first noise signal to the processor; the reference voice receiver is used for acquiring a second voice signal and sending the second voice signal to the processor, wherein the second voice signal is a signal corresponding to the second voice, and the second voice comprises voice sent by a user to which the noise reduction terminal belongs and noise of the current environment; the processor is used for synthesizing a third voice signal according to the first noise reduction signal and the second voice signal, and sending the third voice signal to user equipment of the opposite terminal user so that the opposite terminal user can listen to sound corresponding to the third voice signal. The noise reduction terminal of this embodiment can hear the sound that the user of terminal belonged to of making an uproar clearly to the user of opposite end when guaranteeing that the original structure of terminal can not receive noise reduction structure influence, has avoided increasing the loss of speaking volume to the terminal and to the injury of people's ear in noisy environment, has promoted user's use experience.
Fig. 5 is a schematic flow chart of a noise reduction method provided by the present invention, where the method in this embodiment is a noise reduction method applied to a terminal when the terminal is in a recording state, and the terminal may be a mobile phone, a tablet or a computer; referring to fig. 5, the noise reduction method of the present embodiment includes:
step S501, obtaining a first noise signal of the current environment obtained by an auxiliary voice receiver;
step S502, obtaining a first noise reduction signal according to the first noise signal;
step S503, the first noise reduction signal is sent to the speaker and/or the receiver, so that the speaker sends out a first noise reduction sound wave according to the first noise reduction signal, and/or the receiver sends out a second noise reduction sound wave according to the first noise reduction signal, where the first noise reduction sound wave and/or the second noise reduction sound wave are used to cancel noise in the current environment, so that the reference voice receiver obtains a clear first voice signal, and the first voice signal is a signal corresponding to the sound to be recorded.
Specifically, the apparatus on which the method of this embodiment may be based is implemented as the apparatus shown in fig. 1.
The method of the present embodiment will be described in detail below taking the method of the present embodiment implemented based on the apparatus shown in fig. 1 as an example.
After the noise of the current environment is received by the two auxiliary microphones, the noise is converted into a simulated first noise signal by the auxiliary microphones, and then the two auxiliary microphones respectively send the first noise signal obtained by the two auxiliary microphones to the processor; after receiving the first noise signals sent by the two auxiliary microphones, the processor averages the two first noise signals to obtain an averaged first noise signal, and then obtains a first noise reduction signal according to the averaged first noise signal. The first noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the first noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the first noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
After the processor obtains the first noise reduction signal, the first noise reduction signal is sent to the loudspeaker and/or the receiver. The loudspeaker sends out first noise reduction sound waves according to the first noise reduction signals, the receiver sends out second noise reduction sound waves according to the first noise reduction signals, and the first noise reduction sound waves and/or the second noise reduction sound waves are used for counteracting noise of the current environment. That is, noise-reducing sound waves are emitted through the loudspeaker and/or the receiver and then cancel out the current environmental noise. At this time, since the noise of the current environment is counteracted by the noise-reducing sound wave, the reference microphone can acquire a clear signal of the sound to be recorded, and the signal of the sound to be recorded is sent to the processor for storage.
The noise reduction method of the embodiment comprises the following steps: acquiring a first noise signal of the current environment obtained by an auxiliary voice receiver; obtaining a first noise reduction signal according to the first noise signal; and sending the first noise reduction signal to a loudspeaker and/or a receiver so that the loudspeaker sends out a first noise reduction sound wave according to the first noise reduction signal, and/or the receiver sends out a second noise reduction sound wave according to the first noise reduction signal, wherein the first noise reduction sound wave and/or the second noise reduction sound wave are used for canceling the noise of the current environment, so that a clear first voice signal is obtained by a reference voice receiver, and the first voice signal is a signal corresponding to the sound to be recorded. According to the noise reduction method, a noise reduction terminal with an additional structure is not required to be adopted, so that clear recording can be obtained, and the use experience of a user is improved.
Fig. 6 is a second flow chart of the noise reduction method provided by the present invention, where the method of the present embodiment is a noise reduction method applied to a terminal when the terminal is in a call state and a user at the opposite end makes a voice, and the terminal may be a mobile phone, a tablet or a computer; referring to fig. 6, the noise reduction method of the present embodiment includes:
step S601, obtaining a first noise signal of a current environment obtained by an auxiliary voice receiver;
step S602, obtaining a second noise signal of the current environment obtained by the reference voice receiver;
step S603, obtaining a second noise reduction signal according to the first noise signal and the second noise signal;
step S604, the second noise reduction signal is sent to the speaker and/or the receiver, so that the speaker sends out a third noise reduction sound wave according to the second noise reduction signal, and/or the receiver sends out a fourth noise reduction sound wave according to the second noise reduction signal, where the third noise reduction sound wave and/or the fourth noise reduction sound wave are used to cancel the noise of the current environment.
Specifically, the apparatus on which the method of this embodiment may be based is implemented as the apparatus shown in fig. 2.
The method of the present embodiment will be described in detail below taking the method of the present embodiment implemented based on the apparatus shown in fig. 2 as an example.
After the noise of the current environment is received by the auxiliary microphone and the reference microphone respectively, the noise of the current environment is converted into a first noise signal through the auxiliary microphone, the noise of the current environment is converted into a second noise signal through the reference microphone, then the auxiliary microphone sends the first noise signal to the processor, and the reference microphone sends the second noise signal to the processor, wherein the second noise signal and the first noise signal can be the same or different; after receiving the first noise signal and the second noise signal, the processor averages the first noise signal and the second noise signal to obtain an averaged third noise signal, and then obtains a second noise reduction signal according to the third noise signal. The second noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the second noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the second noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
After the processor obtains the second noise reduction signal, the second noise reduction signal is sent to the loudspeaker and/or the receiver. The loudspeaker sends out third noise-reducing sound waves according to the second noise-reducing signals, the receiver sends out fourth noise-reducing sound waves according to the second noise-reducing signals, and the third noise-reducing sound waves and/or the fourth noise-reducing sound waves are used for counteracting noise of the current environment. That is, noise-reducing sound waves are emitted through the loudspeaker and/or the receiver to cancel current environmental noise. At this time, because the noise of the current environment is counteracted by the noise-reducing sound wave, the user of the noise-reducing terminal can hear the sound made by the clear opposite-end user, and the call volume of the terminal is not required to be increased.
In addition, as can be appreciated by those skilled in the art, the noise reduction method of the present embodiment is also applicable to noise reduction of the current environment when the terminal plays music.
The noise reduction method of the embodiment comprises the following steps: acquiring a first noise signal of the current environment obtained by an auxiliary voice receiver; acquiring a second noise signal of the current environment obtained by a reference voice receiver; obtaining a second noise reduction signal according to the first noise signal and the second noise signal; and sending the second noise reduction signal to the loudspeaker and/or the receiver so that the loudspeaker sends out third noise reduction sound waves according to the second noise reduction signal, and/or the receiver sends out fourth noise reduction sound waves according to the second noise reduction signal, wherein the third noise reduction sound waves and/or the fourth noise reduction sound waves are used for canceling the noise of the current environment. According to the noise reduction method, the noise reduction terminal with an additional structure is not required to be adopted, clear sound sent by the opposite terminal user through the user equipment can be obtained, loss of the terminal and harm to human ears caused by increasing call sound volume of the terminal in a noisy environment are avoided, and use experience of the user is improved.
Fig. 7 is a flowchart of a noise reduction method provided by the present invention, where the method of the present embodiment is a noise reduction method applied to a terminal when the terminal is in a call state and a user at an opposite end makes a voice, and the terminal may be a mobile phone, a tablet or a computer; referring to fig. 7, the noise reduction method of the present embodiment includes:
step S701, a second voice signal obtained by a reference voice receiver is obtained, wherein the second voice signal is a signal corresponding to the second voice, and the second voice comprises voice sent by a user to which a noise reduction terminal belongs and noise of a current environment;
step S702, acquiring a first noise signal of a current environment obtained by an auxiliary voice receiver;
step S703, obtaining a first noise reduction signal according to the first noise signal, and synthesizing a third speech signal according to the first noise reduction signal and the second speech signal;
step S704, the third voice signal is sent to the user equipment of the opposite end user.
Specifically, the apparatus on which the method of this embodiment may be based is the apparatus shown in fig. 3 to 4.
The method of the present embodiment will be described in detail below by taking the method of the present embodiment implemented by the apparatus shown in fig. 3 to 4 as an example.
After the noise of the current environment is received by the three auxiliary microphones, the noise of the current environment is converted into first noise signals by the auxiliary microphones, and the first noise signals corresponding to the auxiliary microphones may be the same or different. Then each auxiliary microphone sends the first noise signals acquired by each auxiliary microphone to a processor; the reference microphone receives second voice, the second voice is converted into a second voice signal through the reference microphone, the second voice signal is sent to the processor, and the second voice comprises voice sent by a user of the noise reduction terminal and noise of the current environment.
After receiving the first noise signals sent by the auxiliary microphones, the processor performs an averaging process on the first noise signals to obtain averaged noise signals, and then obtains first noise reduction signals according to the averaged noise signals. The second noise reduction signal has the following characteristics: the waveform of the sound wave obtained from the second noise reduction signal is the same as the waveform of the noise signal of the current environment, but in the opposite direction. The method for obtaining the second noise reduction signal adopts a processing method in the prior art, which is not described in detail in this embodiment.
And after the processor obtains the first noise reduction signal, the first noise reduction signal is added to the second voice signal, and the environmental noise in the second voice signal is counteracted to obtain a third voice signal. Because the third voice signal does not contain environmental noise, after the third voice signal is sent to the user equipment of the opposite terminal, the user of the opposite terminal can hear the sound sent by the user of the clear noise reduction terminal, and the user of the noise reduction terminal does not need to increase the speaking volume.
The method of the embodiment comprises the following steps: acquiring a second voice signal obtained by a reference voice receiver, wherein the second voice signal is a signal corresponding to the second voice, and the second voice comprises voice sent by a user to which the noise reduction terminal belongs and noise of the current environment; acquiring a first noise signal of the current environment obtained by an auxiliary voice receiver; obtaining a first noise reduction signal according to the first noise signal, and synthesizing a third voice signal according to the first noise reduction signal and the second voice signal; and sending the third voice signal to the user equipment of the opposite end user. According to the noise reduction method, the noise reduction terminal with an additional structure is not required to be adopted, a user at the opposite end can hear the sound emitted by the user to which the clear noise reduction terminal belongs, the loss of the terminal and the harm to the human ear caused by increasing the speaking sound in a noisy environment are avoided, and the use experience of the user is improved.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (6)
1. A noise reduction terminal, comprising: the device comprises a processor, a loudspeaker, a receiver, a reference voice receiver and at least one auxiliary voice receiver, wherein the reference voice receiver, each auxiliary voice receiver, the loudspeaker and the receiver are all connected with the processor;
When the noise reduction terminal is in a recording state, the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
the processor is used for obtaining a first noise reduction signal according to the first noise signal and sending the first noise reduction signal to the loudspeaker and the receiver;
the loudspeaker is used for sending out first noise reduction sound waves according to the first noise reduction signals, the receiver is used for sending out second noise reduction sound waves according to the first noise reduction signals, and the first noise reduction sound waves and the second noise reduction sound waves are used for counteracting noise of the current environment;
the reference voice receiver is used for acquiring a first voice signal and sending the first voice signal to the processor, wherein the first voice signal is a signal corresponding to a sound to be recorded;
when the noise reduction terminal is in a call state and the opposite terminal user makes a voice,
the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
the reference voice receiver is further used for acquiring a second noise signal of the current environment and sending the second noise signal to the processor;
The processor is further configured to obtain a second noise reduction signal according to the first noise signal and the second noise signal, and send the second noise reduction signal to the speaker and the receiver;
the loudspeaker is used for sending out third noise reduction sound waves according to the second noise reduction signals, the receiver is used for sending out fourth noise reduction sound waves according to the second noise reduction signals, and the third noise reduction sound waves and the fourth noise reduction sound waves are used for counteracting noise of the current environment.
2. The noise reduction terminal according to claim 1, wherein when the noise reduction terminal is in a call state and a user to which the noise reduction terminal belongs utters a voice,
the auxiliary voice receiver is used for acquiring a first noise signal of the current environment and sending the first noise signal to the processor;
the reference voice receiver is further configured to obtain a second voice signal, and send the second voice signal to the processor, where the second voice signal is a signal corresponding to a second voice, and the second voice includes a voice sent by a user to which the noise reduction terminal belongs and noise of a current environment;
the processor is further configured to synthesize a third voice signal according to the first noise reduction signal and the second voice signal, and send the third voice signal to a user device of a peer user, so that the peer user listens to a sound corresponding to the third voice signal.
3. The noise reducing terminal of any of claims 1 or 2, wherein the processor, the speaker, the receiver, the reference speech receiver, and the at least one auxiliary speech receiver are disposed inside a housing of the noise reducing terminal, and the speaker, the receiver, the reference speech receiver, and the at least one auxiliary speech receiver are disposed proximate a side wall of the housing.
4. A noise reducing terminal according to claim 3, wherein the reference speech receiver is arranged close to the loudspeaker; the auxiliary voice receiver is disposed proximate the receiver.
5. A method for noise reduction of a terminal, wherein the method is a method for noise reduction by applying the noise reduction terminal according to any one of claims 1 to 4, and when the terminal is in a recording state, the method comprises:
acquiring a first noise signal of the current environment obtained by an auxiliary voice receiver;
obtaining a first noise reduction signal according to the first noise signal;
the first noise reduction signal is sent to a loudspeaker and a receiver, so that the loudspeaker sends out a first noise reduction sound wave according to the first noise reduction signal, and the receiver sends out a second noise reduction sound wave according to the first noise reduction signal, wherein the first noise reduction sound wave and the second noise reduction sound wave are used for canceling noise of the current environment, so that a reference voice receiver obtains a clear first voice signal, and the first voice signal is a signal corresponding to sound to be recorded;
When the terminal is in a call state and the opposite terminal user makes voice, the method comprises the following steps:
acquiring a first noise signal of the current environment obtained by the auxiliary voice receiver;
acquiring a second noise signal of the current environment obtained by a reference voice receiver;
obtaining a second noise reduction signal according to the first noise signal and the second noise signal;
and sending the second noise reduction signal to the loudspeaker and the receiver so that the loudspeaker sends out a third noise reduction sound wave according to the second noise reduction signal, and the receiver sends out a fourth noise reduction sound wave according to the second noise reduction signal, wherein the third noise reduction sound wave and the fourth noise reduction sound wave are used for canceling the noise of the current environment.
6. The method according to claim 5, wherein when the terminal is in a call state and a user to which the noise reduction terminal belongs utters a voice, the method comprises:
acquiring a second voice signal obtained by the reference voice receiver, wherein the second voice signal is a signal corresponding to the second voice, and the second voice comprises voice sent by a user to which the noise reduction terminal belongs and noise of the current environment;
acquiring a first noise signal of the current environment obtained by the auxiliary voice receiver;
Obtaining a first noise reduction signal according to the first noise signal, and synthesizing a third voice signal according to the first noise reduction signal and the second voice signal;
and sending the third voice signal to user equipment of the opposite terminal user.
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| CN110970015B (en) * | 2018-09-30 | 2024-04-23 | 北京搜狗科技发展有限公司 | Voice processing method and device and electronic equipment |
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| CN112309360B (en) * | 2020-10-27 | 2021-08-10 | 深圳市睿联技术股份有限公司 | Audio noise reduction system, shooting equipment and audio equipment |
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