Mobile phone noise reduction protection shell and mobile phone noise reduction method and system

Abstract

The invention relates to the field of noise reduction equipment, and provides a mobile phone noise reduction protection shell and a mobile phone noise reduction method and system.The method comprises the steps that ear position information of a user during conversation is obtained, and the ear position information represents the spatial position relation between the ears of the user and a mobile phone; a noise reduction model and noise reduction parameters are determined based on the ear position information, the noise reduction model at least comprises a neural network noise reduction model, and the noise reduction parameters at least comprise a loudspeaker adjustment angle, a transmission track of sound waves and controller parameters of the noise reduction model; and based on the noise reduction model and the noise reduction parameter, realizing non-contact noise reduction on the audio in the call process of the mobile phone. The method and the device are used for solving the defects that the noise reduction effect is poor and the ear discomfort of a user is possibly caused when a noise reduction earphone is used for carrying out conversation noise reduction, the noise reduction effect can be realized without using the earphone during mobile phone conversation, and the noise reduction effect can be improved in combination with visual information.

Description

Technical Field

[0001] The present invention relates to the technical field of noise reduction equipment, and in particular to a mobile phone noise reduction protective shell and a mobile phone noise reduction method and system. Background Art

[0002] In today's living environment, strong noise sources can be found almost everywhere, such as traffic noise, construction noise, electrical noise, etc. Mobile phones are an indispensable tool for daily remote communication. Affected by environmental noise, their call quality seriously affects user experience and voice information transmission.

[0003] Users often choose to wear headphones to reduce noise when using mobile phones for calls, but this method will add additional external equipment, affecting the portability of mobile phone calls, and wearing headphones for a long time will also cause ear discomfort and poor user experience. Summary of the invention

[0004] The present invention provides a mobile phone noise reduction protective case and a mobile phone noise reduction method and system, which are used to solve the defect that the user's ears are uncomfortable when using noise reduction headphones for call noise reduction. The solution of the present application can achieve the noise reduction effect without using headphones.

[0005] The present invention provides a mobile phone noise reduction method, comprising:

[0006] Acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone;

[0007] Determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model includes at least a neural network noise reduction model, and the noise reduction parameters include at least a speaker adjustment angle, a sound wave transmission trajectory, and a controller parameter of the noise reduction model;

[0008] Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is achieved for the audio during a call on the mobile phone.

[0009] According to the mobile phone noise reduction method provided by the present invention, the noise reduction parameter is determined based on the ear position information, including:

[0010] Determining a current posture of the user's head based on the ear position information and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between the ear position information and the current posture of the user's head;

[0011] Determining an adjustment angle of the speaker based on the current posture of the user's head and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between the current posture of the user's head and an optimal adjustment angle of the speaker;

[0012] Based on the speaker adjustment angle and the third corresponding relationship, the transmission trajectory of the sound wave is determined, and the third corresponding relationship is the corresponding relationship between the current angle of the speaker and the transmission trajectory of the sound wave.

[0013] According to the mobile phone noise reduction method provided by the present invention, the noise reduction model is determined based on the ear position information, including:

[0014] Selecting to match the current ear position information in an ear position information database, wherein the ear position information database is constructed based on a plurality of ear position information of the user;

[0015] According to the ear position information, a corresponding noise reduction model is selected from a pre-built noise reduction model library.

[0016] According to the mobile phone noise reduction method provided by the present invention, the noise reduction model library is constructed by the following method:

[0017] Storing several types of ear position information of the user and establishing an ear position information database;

[0018] Record several types of noise that users are exposed to and establish a noise database;

[0019] Randomly combining the ear position information and the noise to design different neural network models;

[0020] The controller parameters of the neural network model are adjusted to establish a noise reduction model library under different ear position information and noise characteristics. The noise reduction model library includes a neural network model library, a controller parameter library, a sound unit speaker angle database and a sound unit sound wave transmission trajectory database.

[0021] The present invention also provides a mobile phone noise reduction system, comprising:

[0022] A data acquisition module, used to acquire the ear position information of the user during a call, wherein the ear position information represents the spatial position relationship between the user's ear and the mobile phone;

[0023] An intelligent control module, configured to determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a speaker adjustment angle, a sound wave transmission trajectory, and controller parameters of the noise reduction model;

[0024] The noise reduction module is used to implement non-contact noise reduction for the audio during a call of the mobile phone based on the noise reduction model and the noise reduction parameters.

[0025] The present invention also provides a mobile phone noise reduction protective shell, comprising:

[0026] A noise reduction processing unit, used to execute the mobile phone noise reduction method according to any one of claims 1 to 4;

[0027] A noise collection unit, used to collect call audio and environmental noise, and transmit them to the noise reduction processing unit;

[0028] A sound generating unit, used for outputting the sound processed by the noise reduction processing unit;

[0029] A communication unit, used to realize information transmission among the noise reduction processing unit, the noise collection unit and the sound generating unit;

[0030] A power supply unit is used to supply power to the noise reduction processing unit, the noise collection unit and the sound generating unit.

[0031] According to the mobile phone noise reduction protective shell provided by the present invention, the noise reduction processing unit is implemented by an independent microprocessor and / or an internal processor of the mobile phone.

[0032] According to the mobile phone noise reduction protective shell provided by the present invention, the noise collection unit includes a first microphone and a second microphone.

[0033] According to the mobile phone noise reduction protective case provided by the present invention, the communication unit includes a communication interface, and the setting position of the communication interface corresponds to the position of the charging port of the mobile phone;

[0034] The communication interface is used to connect to the charging port to communicate between the mobile phone and the mobile phone noise reduction protective shell.

[0035] According to the mobile phone noise reduction protective case provided by the present invention, the communication interface also includes a charging interface, and the setting position of the charging interface corresponds to the position of the charging port of the mobile phone;

[0036] The charging interface is used to be connected to the charging port, and the mobile phone is charged through an external power supply without cutting off the power supply of the mobile phone shell.

[0037] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, any of the above-mentioned mobile phone noise reduction methods is implemented.

[0038] The present invention also provides a non-transitory computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, any of the above-mentioned mobile phone noise reduction methods is implemented.

[0039] The present invention also provides a computer program product, including a computer program, and when the computer program is executed by a processor, any of the above-mentioned mobile phone noise reduction methods is implemented.

[0040] In the mobile phone noise reduction method provided by the present invention, the user can achieve noise reduction without using headphones. Specifically, the user's ear position information can be obtained during the user's call. According to the ear position information, the relative position of the mobile phone used in the call and the user's ear can be determined, and then the optimal sound wave transmission trajectory during the call can be determined. Under the sound wave transmission trajectory, the audio sound waves of the call can be more efficiently transmitted along the sound channel to the user's cochlea. At the same time, combined with the noise reduction processing of the noise during the call, on the one hand, the influence of the noise is reduced, and on the other hand, the quality of the call audio is enhanced, so that the call quality is improved from two perspectives, and the noise reduction effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 This is one of the flow charts of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0043] Figure 2 This is a second flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0044] Figure 3 This is a third flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0045] Figure 4 This is a fourth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0046] Figure 5 This is a fifth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0047] Figure 6 This is a sixth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0048] Figure 7 This is the seventh flow chart of the mobile phone noise reduction method provided by the embodiment of the present invention;

[0049] Figure 8 is a structural schematic diagram of a mobile phone noise reduction system provided by an embodiment of the present invention;

[0050] Fig. 9 This is one of the structural schematic diagrams of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0051] Fig.10This is the second structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0052] Fig.11 This is the third structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0053] Fig.12 This is the fourth structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0054] Fig.13 This is the fifth structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0055] Fig.14 It is a schematic diagram of the physical structure of an electronic device provided by an embodiment of the present invention.

[0056] in:

[0057] 1-first speaker; 2-first microphone; 3-second speaker;

[0058] 4-first line; 5-second line; 6-signal preprocessing unit;

[0059] 7-noise reduction processing unit; 8-third line; 9-communication unit;

[0060] 10-Fourth line; 11-Second microphone. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Figure 1 This is one of the flow charts of the mobile phone noise reduction method provided by an embodiment of the present invention.

[0063] like Figure 1 As shown, this embodiment provides a mobile phone noise reduction method, including:

[0064] Step 101, obtaining ear position information of a user during a call, wherein the ear position information represents a spatial position relationship between the ear of the user and the mobile phone;

[0065] Step 102, determining a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a speaker adjustment angle, a sound wave transmission trajectory, and controller parameters of the noise reduction model;

[0066] Step 103: Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is implemented for the audio during the call of the mobile phone.

[0067] In actual applications, when the mobile phone noise reduction method provided by this embodiment is applied, the user does not need to use headphones when talking on the phone, and can directly place the mobile phone on the ear for a regular call. The ear position information can characterize the positional relationship between the user's ear and the mobile phone, wherein the ear position information can include the user's ear position information, and the user's ear position information can be obtained by photographing using the front camera of the mobile phone. When the photographed ear position information is different, it represents that the posture of the user during the call is also different. Furthermore, there are subtle differences in the way in which the audio sound waves during the call are perceived by the user. Based on this, the transmission trajectory of the audio sound waves during the call between the speaker of the mobile phone and the cochlea of ​​the user can be determined by the collected ear position information. Not only that, the transmission trajectory of the audio sound waves between the microphone of the mobile phone and the user's mouth can also be determined. In this way, during the call, not only the probability of the audio transmitted from the mobile phone being interfered by noise can be reduced, but also the amount of noise mixed in the audio sound waves spoken by the user can be reduced, so that the audio sound waves emitted by the user are sent to the other party of the call through the mobile phone as completely as possible, thereby improving the noise reduction effect and the quality of the call from two perspectives.

[0068] During implementation, in addition to adjusting the transmission trajectory of the audio sound waves to improve the call quality, in this embodiment, the audio sound waves during the call can also be screened to filter out the noise sound waves, thereby reducing noise interference during mobile phone calls. In actual applications, the noise sound waves can be filtered out based on the frequency of the sound waves.

[0069] In the mobile phone noise reduction method provided in this embodiment, the user can achieve noise reduction without using headphones. Specifically, the user's ear position information can be obtained during the user's call. According to the ear position information, the relative position of the mobile phone used in the call and the user's ear can be determined, and then the optimal sound wave transmission trajectory during the call can be determined. Under the sound wave transmission trajectory, the audio sound waves of the call can be more efficiently transmitted along the sound channel to the user's cochlea. At the same time, combined with the noise reduction processing of the noise during the call, on the one hand, the impact of the noise is reduced, and on the other hand, the quality of the call audio is enhanced, thereby improving the call quality from two perspectives and achieving a better noise reduction effect.

[0070] In an exemplary embodiment, determining the noise reduction parameter based on the ear position information includes:

[0071] Determining a current posture of the user's head based on the ear position information and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between the ear position information and the current posture of the user's head;

[0072] Determining an adjustment angle of the speaker based on the current posture of the user's head and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between the current posture of the user's head and an optimal adjustment angle of the speaker;

[0073] Based on the speaker adjustment angle and the third corresponding relationship, the transmission trajectory of the sound wave is determined, and the third corresponding relationship is the corresponding relationship between the current angle of the speaker and the transmission trajectory of the sound wave.

[0074] In actual applications, the first correspondence is the correspondence between the ear position information and the user's head posture. The first correspondence may be obtained by pre-collecting the user's ear position information under different call postures and constructing the correspondence between the ear position information and the user's head posture through a large amount of data.

[0075] In actual applications, in this embodiment, the distance and angle between the speaker of the mobile phone and the user's cochlea can be used to characterize the transmission trajectory of the sound wave. In this way, the second correspondence is the same as the first correspondence. The distance and angle between the speaker of the mobile phone and the user's cochlea can be measured in advance under different calling postures, and then the correspondence between the user's head posture and the transmission trajectory of the sound wave is constructed.

[0076] During implementation, after constructing the first correspondence and the second correspondence, the correspondence between the ear position information and the transmission trajectory of the sound wave can be directly obtained. In this way, after determining the ear position information, the transmission trajectory of the sound wave can be directly determined. In this embodiment, by pre-constructing the correspondence, it is convenient to quickly turn on noise reduction during a call and improve the quality of the call.

[0077] In an exemplary embodiment, determining a noise reduction model based on the ear position information includes:

[0078] Selecting to match the current ear position information in an ear position information database, wherein the ear position information database is constructed based on a plurality of ear position information of the user;

[0079] According to the ear position information, a corresponding noise reduction model is selected from a pre-built noise reduction model library.

[0080] In an exemplary embodiment, the noise reduction model library is constructed by the following method:

[0081] Storing several types of ear position information of the user and establishing an ear position information database;

[0082] Record several types of noise that users are exposed to and establish a noise database;

[0083] Randomly combining the ear position information and the noise to design different neural network models;

[0084] The controller parameters of the neural network model are adjusted to establish a noise reduction model library under different ear position information and noise characteristics. The noise reduction model library includes a neural network model library, a controller parameter library, a sound unit speaker angle database and a sound unit sound wave transmission trajectory database.

[0085] In an exemplary embodiment, the non-contact noise reduction of the audio during a call of a mobile phone based on the noise reduction model and the noise reduction parameters includes:

[0086] A first corresponding relationship is determined based on the ear position information, a second corresponding relationship of the mobile phone case speaker adjustment angle is determined based on the determined position information, and a third corresponding relationship of the sound wave transmission trajectory is determined based on the first corresponding relationship and the second corresponding relationship.

[0087] The first microphone on the phone case receives ambient noise, and the second microphone receives voice information and noise-reduced sound information. The speaker on the phone case emits noise-reduced sound calculated by the noise reduction model, and noise cancellation is achieved at the ear position through the destructive interference method of sound waves.

[0088] The noise reduction model trains a pre-built neural network initial model based on a training set to obtain a neural network model, wherein the training data set involves a common noise database that a user may be exposed to, a user head posture database, a speaker adjustment angle library, and a sound wave transmission trajectory library.

[0089] The noise reduction model can be run on a microprocessor integrated in the phone case, or on a processor inside the phone. If the noise reduction model is run on the processor inside the phone, build an APP that integrates the noise reduction model and the corresponding database.

[0090] Figure 2 This is a second flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0091] Figure 3 This is a third flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0092] Figure 4 This is a fourth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0093] Figure 5This is a fifth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0094] Figure 6 This is a sixth flow chart of the mobile phone noise reduction method provided by an embodiment of the present invention;

[0095] Figure 7 This is the seventh flow chart of the mobile phone noise reduction method provided by the embodiment of the present invention.

[0096] Figure 2 The training process of the neural network model in this embodiment is illustrated. Figure 3 The matching relationship between various databases in this embodiment is illustrated. Figure 4 This example shows the functional overview of the connection between the noise reduction protective case and the mobile phone. Figure 5 This example illustrates the acoustic path selection and matching process of the speaker and microphone of the mobile phone noise reduction protective case. Figure 6 The neural network model controller parameters and speaker angle selection matching process of the mobile phone noise reduction protective case are illustrated. Figure 7 This example illustrates the process of using a neural network model of a mobile phone noise reduction protective case to denoise the voice input.

[0097] in, Figure 3 Medium S L,i and S R,i represents the i-th acoustic path corresponding to the left and right speakers, respectively, S E,i represents the i-th acoustic path corresponding to the front microphone, W L,i and W R,i They represent the i-th group of optimal controller parameter matrices corresponding to the neural network models of the left and right speakers, and They respectively represent the i-th group of adjustment angles for optimal noise reduction matching of the left and right speakers.

[0098] Figure 8 It is a structural schematic diagram of a mobile phone noise reduction system provided by an embodiment of the present invention.

[0099] like Figure 8 As shown, the present invention also provides a mobile phone noise reduction system, comprising:

[0100] The data acquisition module 801 is used to acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone;

[0101] An intelligent control module 802 is used to determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a speaker adjustment angle, a sound wave transmission trajectory, and controller parameters of the noise reduction model;

[0102] The noise reduction module 803 is used to implement non-contact noise reduction for the audio during the call of the mobile phone based on the noise reduction model and the noise reduction parameters.

[0103] Fig. 9 This is one of the structural schematic diagrams of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0104] Fig.10 This is the second structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0105] Fig.11 This is the third structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0106] Fig.12 This is the fourth structural schematic diagram of the noise reduction protective case for a mobile phone provided by an embodiment of the present invention;

[0107] Fig.13 This is the fifth structural schematic diagram of the noise reduction protective case for a mobile phone provided in an embodiment of the present invention.

[0108] like Figure 9-13 As shown, the present invention also provides a mobile phone noise reduction protective shell, wherein Fig. 9 The front structure of the noise reduction protective case for mobile phones. Fig.10 The top surface structure of the noise reduction protective case for mobile phones. Figure 11-Figure 12 The bottom structure of the noise reduction protective case for mobile phones. Fig.13 The assembly structure of the noise reduction protective case for the mobile phone and the mobile phone, such as Figure 9-13 As shown, the mobile phone noise reduction protective case includes:

[0109] A noise reduction processing unit 7, configured to execute the mobile phone noise reduction method according to any one of claims 1 to 4;

[0110] A noise collection unit, used to collect environmental noise and call audio, and transmit them to the noise reduction processing unit 7;

[0111] A sound generating unit, used for outputting the sound processed by the noise reduction processing unit 7;

[0112] A communication unit 9, used to realize information transmission among the noise reduction processing unit 7, the noise collection unit and the sound generating unit;

[0113] A power supply unit is used to supply power to the noise reduction processing unit 7, the noise collection unit and the sound generating unit.

[0114] In actual applications, the size of the mobile phone noise reduction protective case provided in this embodiment can be flexibly customized according to the size of the mobile phone used, that is, the size of the mobile phone noise reduction protective case can be changed to be suitable for any mobile phone. The mobile phone noise reduction protective case can be made of soft silicone material, and the internal integrated circuit can adopt a flexible circuit board device. It can be folded arbitrarily during the application process and has the functions of light weight, drop resistance, waterproof and dustproof.

[0115] By installing the protective shell on an existing mobile phone, the surrounding environmental noise can be effectively suppressed and the caller's voice call quality can be improved. It is not only easy to install and protect the mobile phone, but also does not have any adverse effect on the use of the existing mobile phone.

[0116] The mobile phone noise reduction protective shell provided in this embodiment can apply any of the above-mentioned mobile phone noise reduction methods to perform noise reduction processing on the telephone communication process.

[0117] The noise collection unit may be a microphone of a mobile phone noise reduction protective case, and the sound emitting unit may be a speaker of the mobile phone noise reduction protective case. The angles of the microphone and speaker of the mobile phone noise reduction protective case can be freely adjusted according to needs to achieve optimal noise reduction in the ear space.

[0118] During implementation, two speakers can be set for the mobile phone noise reduction protective shell, which are divided into a first speaker 1 and a second speaker 3, and two microphones can be set for the mobile phone noise reduction protective shell, which are divided into a first microphone 2 and a second microphone 11. The first microphone 2 is arranged at the front end of the mobile phone noise reduction protective shell, and the second microphone 11 is arranged at the rear end of the mobile phone noise reduction protective shell, which are respectively used to collect call audio and environmental noise after noise reduction.

[0119] When using a mobile phone noise reduction protective case to reduce call noise, the ambient noise can be collected through the second microphone arranged at the rear end, and the ambient noise can be transmitted to the noise reduction processing unit. An anti-noise signal corresponding to the ambient noise is generated in the noise reduction processing unit. The anti-noise signal is equivalent to a neutralization signal of the ambient noise. The noise reduction processing unit can send the anti-noise signal to the first speaker and the second speaker. The call audio in the first speaker and the second speaker can be processed with noise reduction under the processing of the anti-noise signal.

[0120] In actual applications, after the communication unit 9 is electrically connected to the mobile phone, it can not only be used for communication between the mobile phone noise reduction protective shell and the mobile phone, but also use the power of the mobile phone to power the mobile phone noise reduction protective shell.

[0121] By applying the mobile phone noise reduction protective case provided in this embodiment, the user no longer needs to use traditional noise reduction headphones such as noise reduction headphones and bone conduction headphones when making telephone communications. Compared with noise reduction headphones, the mobile phone noise reduction protective case used in this embodiment does not physically squeeze the user's ear canal, reduces hearing damage to the user, and improves the user's comfort. Moreover, all structures used in the noise reduction process are integrated into the mobile phone case. The user does not need to add additional accessories during use, which not only saves costs but is also more convenient to carry.

[0122] In an exemplary embodiment, the noise reduction processing unit may be implemented by an independent microprocessor and / or a processor inside the mobile phone.

[0123] In an exemplary embodiment, the mobile phone noise reduction protective case may further include a signal preprocessing unit 6, which may be used to receive image information sent by the communication unit 9, and transmit the image information to the noise reduction processing unit 7 after compression filtering, feature extraction and other processing; the signal preprocessing unit 6 may also be used to receive noise information sent by the communication unit 9, and transmit the noise information to the noise reduction processing unit 7 after amplification, filtering and feature extraction; the signal processing unit may also be used to receive call audio after noise reduction processing sent by the noise reduction processing unit 7, amplify the call audio and transmit it to the speaker of the mobile phone noise reduction protective case, and at the same time, a control signal for adjusting the angle of the speaker may be sent to the speaker of the mobile phone noise reduction protective case, and after receiving the control signal and the call audio, the speaker adjusts its own angle according to the control signal and outputs the call audio after noise reduction.

[0124] In an exemplary embodiment, the noise reduction processing unit 7 is also used to control the mobile phone to capture the ear position information of the user during a call through the communication unit 9.

[0125] In actual applications, the noise reduction processing unit 7 and the above-mentioned signal preprocessing unit 6 can be a physical hardware structure installed on the noise reduction protective shell of the mobile phone, that is, an independent noise reduction processing unit 7 and a signal preprocessing unit 6 are integrated on the noise reduction protective shell of the mobile phone. During implementation, an App software can also be installed inside the mobile phone. The App software integrates the functions of the noise reduction processing unit 7 and the signal preprocessing unit 6. In this way, it is equivalent to using the processing system of the mobile phone itself to complete the functions of intelligent noise reduction and signal preprocessing. Any data required in the noise reduction processing and signal preprocessing process can be stored in the mobile phone memory, and only needs to be called when noise reduction processing is required. In this way, on the one hand, the complicated work of developing independent noise reduction processing units 7 and signal preprocessing units 6 is eliminated. On the other hand, the memory, processor and other resources of the mobile phone can be fully utilized to improve the efficiency of data calling and data processing.

[0126] In an exemplary embodiment, the positions of the noise collecting unit and the sound emitting unit are adjusted based on the transmission trajectory of the sound waves during the call.

[0127] In an exemplary embodiment, the communication unit 9 includes a communication interface, and the setting position of the communication interface corresponds to the position of the charging port of the mobile phone;

[0128] The communication interface is used to connect to the charging port to enable the noise reduction mobile phone protective case to communicate with the mobile phone.

[0129] In actual applications, the communication interface can be a Type-c or Lightning interface that is compatible with the charging port of the mobile phone.

[0130] In this embodiment, the communication interface can be flexibly connected to the noise reduction protective case of the mobile phone. When the mobile phone needs to be charged, the communication interface of the noise reduction protective case of the mobile phone can be unplugged from the charging port of the mobile phone. When the mobile phone finishes charging, the communication interface of the noise reduction protective case of the mobile phone can be inserted into the charging port of the mobile phone. While realizing power supply and communication for the noise reduction protective case of the mobile phone, the charging port of the mobile phone can also be waterproof and dustproof.

[0131] In an exemplary embodiment, the communication interface further includes a charging interface, and the charging interface is arranged at a position corresponding to the position of the charging port of the mobile phone;

[0132] The charging interface is used to connect with the charging port to charge the mobile phone.

[0133] In this embodiment, the mobile phone noise reduction protective case is provided with not only a communication interface but also a charging interface. The communication interface can be inserted into the charging port of the mobile phone to provide a communication connection between the mobile phone and the mobile phone noise reduction protective case. At the same time, the charging interface can be used to connect an external mobile phone charging cable. That is to say, in this embodiment, the communication interface of the mobile phone noise reduction protective case does not need to be unplugged from the charging port of the mobile phone to charge the mobile phone, which is more convenient to use.

[0134] Fig.14 An example of a physical structure diagram of an electronic device is shown in FIG. Fig.14 As shown, the electronic device may include: a processor 1410, a communication interface 1420, a memory 1430 and a communication bus 1440, wherein the processor 1410, the communication interface 1420 and the memory 1430 communicate with each other through the communication bus 1440. The processor 1410 may call the logic instructions in the memory 1430 to execute the mobile phone noise reduction method, which includes:

[0135] Acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone;

[0136] Determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a transmission trajectory of sound waves and controller parameters of the noise reduction model;

[0137] Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is achieved for the audio during a call on the mobile phone.

[0138] In addition, the logic instructions in the above-mentioned memory 1430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on such an understanding, the technical solution of the present invention can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods of various embodiments of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0139] On the other hand, the present invention further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the mobile phone noise reduction method provided by the above methods, the method includes:

[0140] Acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone;

[0141] Determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a transmission trajectory of sound waves and controller parameters of the noise reduction model;

[0142] Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is achieved for the audio during a call on the mobile phone.

[0143] In another aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the method for reducing noise in a mobile phone provided by the above methods is implemented, and the method includes:

[0144] Acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone;

[0145] Determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a transmission trajectory of sound waves and controller parameters of the noise reduction model;

[0146] Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is achieved for the audio during a call on the mobile phone.

[0147] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Those of ordinary skill in the art may understand and implement it without creative effort.

[0148] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods of each embodiment or some parts of the embodiment.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mobile phone noise reduction method, characterized in that: include: Acquire the ear position information of the user during the call, wherein the ear position information represents the spatial position relationship between the ear of the user and the mobile phone; Determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model includes at least a neural network noise reduction model, and the noise reduction parameters include at least a speaker adjustment angle, a sound wave transmission trajectory, and a controller parameter of the noise reduction model; Based on the noise reduction model and the noise reduction parameters, non-contact noise reduction is achieved for the audio during a call on the mobile phone.

2. The mobile phone noise reduction method according to claim 1, characterized in that: The determining of the noise reduction parameter based on the ear position information comprises: Determining a current posture of the user's head based on the ear position information and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between the ear position information and the current posture of the user's head; Determining an adjustment angle of the speaker based on the current posture of the user's head and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between the current posture of the user's head and an optimal adjustment angle of the speaker; Based on the speaker adjustment angle and the third corresponding relationship, the transmission trajectory of the sound wave is determined, and the third corresponding relationship is the corresponding relationship between the current angle of the speaker and the transmission trajectory of the sound wave.

3. The mobile phone noise reduction method according to claim 1, characterized in that: The determining of the noise reduction model based on the ear position information comprises: Selecting to match the current ear position information in an ear position information database, wherein the ear position information database is constructed based on a plurality of ear position information of the user; According to the ear position information, a corresponding noise reduction model is selected from a pre-built noise reduction model library.

4. The method for reducing noise in a mobile phone according to claim 3, characterized in that: The noise reduction model library is constructed by the following method: Storing several types of ear position information of the user and establishing an ear position information database; Record several types of noise that users are exposed to and establish a noise database; Randomly combining the ear position information and the noise to design different neural network models; The controller parameters of the neural network model are adjusted to establish a noise reduction model library under different ear position information and noise characteristics. The noise reduction model library includes a neural network model library, a controller parameter library, a sound unit speaker angle database and a sound unit sound wave transmission trajectory database.

5. A mobile phone noise reduction system, characterized in that: include: A data acquisition module, used to acquire the ear position information of the user during a call, wherein the ear position information represents the spatial position relationship between the user's ear and the mobile phone; An intelligent control module, used to determine a noise reduction model and noise reduction parameters based on the ear position information, wherein the noise reduction model at least includes a neural network noise reduction model, and the noise reduction parameters at least include a transmission trajectory of sound waves and controller parameters of the noise reduction model; The noise reduction module is used to implement non-contact noise reduction for the audio during a call of the mobile phone based on the noise reduction model and the noise reduction parameters.

6. A noise reduction protective case for a mobile phone, characterized in that: include: A noise reduction processing unit, used to execute the mobile phone noise reduction method according to any one of claims 1 to 4; A noise collection unit, used to collect call audio and environmental noise, and transmit them to the noise reduction processing unit; A sound generating unit, used for outputting the sound processed by the noise reduction processing unit; A communication unit, used to realize information transmission among the noise reduction processing unit, the noise collection unit and the sound generating unit; A power supply unit is used to supply power to the noise reduction processing unit, the noise collection unit and the sound generating unit.

7. The mobile phone noise reduction protective case according to claim 6, characterized in that: The noise reduction processing unit is implemented by an independent microprocessor and / or an internal processor of the mobile phone.

8. The mobile phone noise reduction protective case according to claim 6, characterized in that: The noise collection unit includes a first microphone and a second microphone.

9. The mobile phone noise reduction protective case according to claim 6, characterized in that: The communication unit includes a communication interface, and the setting position of the communication interface corresponds to the position of the charging port of the mobile phone; The communication interface is used to connect to the charging port to communicate between the mobile phone and the mobile phone noise reduction protective shell.

10. The mobile phone noise reduction protective case according to claim 9, characterized in that: The communication interface also includes a charging interface, and the setting position of the charging interface corresponds to the position of the charging port of the mobile phone; The charging interface is used to be connected to the charging port, and the mobile phone is charged through an external power supply without cutting off the power supply of the mobile phone shell.

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