CN113660593A - Hearing aid method and device for eliminating head shadow effect - Google Patents
Hearing aid method and device for eliminating head shadow effect Download PDFInfo
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- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
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- H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
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Abstract
The invention provides a hearing aid method for eliminating a head shadow effect, which comprises the following steps: generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference; performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal; calculating the direction information of the main sound signal according to the difference information among different input signals, dividing the periphery of the input signals into a plurality of auditory ranges such as a head direction, a behind-the-ear direction, a front-of-the-ear direction and the like, and calculating the direction information of the main sound signal according to the difference information among different input signals, so that the auditory range to which the main sound signal belongs can be judged; through the position information with main sound signal and the wearing position information phase-match of hearing aid equipment, can compensate according to patient's head, ear to the effect of sheltering from of sound signal.
Description
Technical Field
The invention relates to the field of hearing aids, in particular to a hearing aid method and a hearing aid device for eliminating a head shadow effect.
Background
The in-the-ear hearing aid is also called as a concha cavity hearing aid, the in-the-ear hearing aid is a customized hearing aid which is developed and applied at the earliest, occupies a concha cavity and a concha boat and is also called as the concha hearing aid from the anatomical viewpoint, a shell of the in-the-ear hearing aid is customized according to the shape of the concha cavity of a hearing-impaired person, a microphone, an amplifier and an earphone are all placed in the customized shell, any conducting wire and hose are not needed outside, the in-the-ear hearing aid can be placed in the concha boat, the concha cavity and an external auditory canal completely, the in-the-ear hearing aid is hidden and portable, a microphone inlet of the hearing aid is positioned on the outer side face of the hearing aid and is more accordant with the natural position of the sound feeling of the human ear compared with the back-of-ear hearing aid, the size of the in-the concha hearing aid and the area of a panel are relatively large, and the technology of the binaural hearing aid can be applied easily.
When the binaural hearing aid is applied, when a sound source deviates from a central axis in front of two ears, the distance from the sound source to the left ear and the distance from the sound source to the right ear are different, which causes the difference in sound level, time and phase of the sound reaching the two ears, and people can distinguish the sound direction by means of the slight difference, namely the binaural effect, if a binaural hearing loss person only wears one hearing aid, the binaural effect obviously weakens or disappears completely, however, the binaural hearing aid also has the defects of high price and low wearing comfort, and therefore, a large number of hearing-impaired audiences still exist in a single-ear hearing aid;
if a hearing-impaired patient wears the hearing aid on one side, sound transmitted from the other side is greatly attenuated due to the obstruction of the skull, the attenuation can reach 10-16 decibels for high-frequency sound larger than 1500Hz, most of the time, if the hearing-impaired patient wants to clearly hear the sound on the side without wearing the hearing aid, the hearing-impaired patient only needs to habitually twist the head and listen by wearing ears, which is dangerous when driving, riding or performing work needing concentrated vision, and the hearing-aid method and the device capable of eliminating the head shadow effect are lacked.
SUMMARY OF THE PATENT FOR INVENTION
Aiming at the defects in the prior art, the invention provides a hearing aid method and a hearing aid device for eliminating the head shadow effect, so as to eliminate the influence of the head shadow effect caused by wearing a hearing aid by a single ear.
According to a first aspect of the embodiments of the present disclosure, a preferred embodiment of the present invention provides a hearing aid method for eliminating a head shadow effect, including:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
In one embodiment, the calculating the direction information of the main sound signal according to the difference information between different input signals, where the difference information includes size information, time information, and distribution information of the input signals, includes:
acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
calculating to obtain difference values of time information of capturing the same sound signal by different input signals;
and calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, wherein the direction information is spatial position information.
In one embodiment, the adjusting the magnitude of the main sound signal and thereby generating the output signal based on the difference information between the different input signals, the orientation information of the main sound signal, and the orientation information of the hearing assistance device includes:
dividing the periphery of the input signal into a plurality of hearing ranges, wherein the hearing ranges at least comprise a head direction, a behind-the-ear direction and a front-of-the-ear direction;
determining an auditory range to which the azimuth information of the main sound signal belongs;
and calculating the corresponding amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range, and generating an output signal according to the amplification factor.
In an embodiment, the calculating a desired amplification factor of the main sound signal according to a predetermined program corresponding to the determined hearing range and generating an output signal therefrom includes:
acquiring the division range of the hearing range and attenuation formulas corresponding to different division ranges;
and reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
According to a second aspect of the disclosed embodiments, the present invention provides a hearing device for eliminating a head shadow effect, comprising:
the sensing module is used for generating at least one input signal from sound signals of the surrounding environment, and the input directions of the input signals have difference;
a first processing module for performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing an amplitude of a specific range of frequencies of the input signal;
the calculation module is used for calculating the direction information of the main sound signal according to the difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
and the second processing module is used for adjusting the size of the main sound signal according to the difference information among different input signals, the orientation information of the main sound signal and the orientation information of the hearing-aid equipment and generating an output signal.
In one embodiment, the calculation module includes:
the capturing module is used for acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
the first calculation submodule is used for calculating a difference value of time information of capturing the same sound signal by different input signals;
and the second calculation submodule is used for calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, and the direction information is space position information.
In one embodiment, the second processing module includes:
the setting module is used for dividing the periphery of the input signal into a plurality of hearing ranges, and the hearing ranges at least comprise a head direction, a behind-the-ear direction and an in-front-of-ear direction;
the determining module is used for determining the hearing range to which the azimuth information of the main sound signal belongs;
and the simulation module is used for calculating the required amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range and generating an output signal accordingly.
According to a third aspect of the disclosed embodiments, the present invention provides a hearing device for eliminating the head shadow effect, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
According to the technical scheme, the hearing aid method and the hearing aid device for eliminating the head shadow effect have the following beneficial effects that: dividing the periphery of the input signal into a plurality of auditory ranges such as a head direction, a back direction, a front direction and the like, and calculating the direction information of the main sound signal through the difference information among different input signals, so that the auditory range to which the main sound signal belongs can be judged; through the position information of wearing with main sound signal and hearing aid equipment position information phase-match, can compensate to the effect of sheltering from of sound signal according to patient's head, ear for listen the barrier patient on the basis that hearing aid was worn to monaural, still can all-round perception ambient sound environment's change, eliminated the influence of head shadow effect to hearing aid equipment, to listening activities such as barrier patient's work, life, study, trip big useful department.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the patentable embodiments of the invention, reference will now be made to the appended drawings, which are briefly described as embodiments or as required in the prior art description. In all the drawings, the elements or parts are not necessarily drawn to actual scale.
FIG. 1 is a flow chart of a hearing aid method for eliminating the effect of head shadow according to the present invention;
fig. 2 is a flowchart of step S103 in a hearing aid method for eliminating the head shadow effect according to the present invention;
fig. 3 is a flowchart of step S104 in a hearing aid method for eliminating the head shadow effect according to the present invention;
fig. 4 is a flowchart of step S303 in a hearing aid method for eliminating the head shadow effect according to the present invention;
fig. 5 is a block diagram of a hearing device for eliminating the head shadow effect according to the present invention;
fig. 6 is a block diagram of a computing module in a hearing device for eliminating the head shadow effect according to the present invention;
fig. 7 is a block diagram of a second processing module in a hearing device for eliminating the head shadow effect according to the present invention;
fig. 8 is a block diagram of an analog module in a hearing device for eliminating the head shadow effect according to the present invention;
fig. 9 is a block diagram of another hearing device for eliminating the head shadow effect according to the present invention.
Detailed Description
Embodiments of the patented technology of the present invention will be described in detail below with reference to the drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.
Fig. 1 is a flowchart of a hearing aid method for eliminating the head shadow effect according to the present invention, which is applied to a hearing aid device. As shown in fig. 1, the hearing aid method for eliminating the head shadow effect according to this embodiment includes the following steps S101 to S104:
in step S101, at least one input signal is generated from sound signals of a surrounding environment, the input directions of the input signals having a difference;
in step S102, performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
the microphone, the loudspeaker and other audio input devices can receive air vibration to generate micro current, and the audio input devices are positioned at different positions of the hearing aid device, so that extremely small sound difference can be detected;
an audio processing device such as a filter can eliminate or attenuate noise audio of a specific range of frequencies, so that noise interference can be reduced;
for example, the following steps are carried out: the front side and the rear side of the hearing aid device are respectively provided with an audio input device, and the hearing aid device is provided with a sound hole corresponding to the position of the audio input device, so that sound can pass through the sound hole to reach the audio input device to generate a fluctuating current, and the fluctuating current eliminates or weakens the noise audio frequency of a specific range of frequency through an audio processing device;
in step S103, calculating azimuth information of the main sound signal according to difference information between different input signals, where the difference information includes size information, time information, and distribution information of the input signals;
as shown in step S102, the two audio input devices are located at different orientations, so that the receiving time and receiving intensity of the two audio input devices are different for the same sound signal, and the approximate orientation information of the main sound signal can be obtained according to the known distribution position and angle information of the audio input devices.
In step S104, adjusting the size of the main sound signal according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and generating an output signal therefrom;
for example, the following steps are carried out: when the hearing aid equipment is installed on the left ear, most of the main sound signals on the right side are blocked, so that a hearing-impaired patient has to twist the neck to listen to the main sound signals, and the attenuation rule that sound waves pass through the head is obtained according to experiments, so that the state that the main sound signals are accepted by the right ear can be simulated, the hearing-impaired patient can still perceive the change of the surrounding sound environment in an all-around manner on the basis that the hearing aid is worn by one ear, and the head action does not need to be adjusted.
As shown in fig. 2, in step S102, the calculating the direction information of the main sound signal according to the difference information between different input signals, where the difference information includes size information, time information, and distribution information of the input signals, includes the following steps S201 to S203:
in step S201, acquiring time information of capturing a same sound signal by different input signals, where the same sound signal has a same sound frequency;
in step S202, calculating a difference value between time information of capturing the same sound signal by different input signals;
in step S203, calculating orientation information of the main sound signal by referring to the difference value and distribution information of the input signal, where the orientation information is spatial position information;
as described in step S102, the same sound signal is received by the two audio input devices at different times, and in general, the difference value of the time information multiplied by the sound velocity is the distance between the two audio input devices, and the larger the distance is, the more the sound source is located at the front and rear sides of the hearing aid device, and the smaller the distance is, the closer the sound source is to the left and right sides of the hearing aid device, so that the direction information of the main sound signal can be determined.
In one embodiment, as shown in fig. 3, in step S103, the adjusting the size of the main sound signal and generating the output signal according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device includes the following steps S301 to S303:
in step 301, dividing the periphery of the input signal into a plurality of hearing ranges, wherein the hearing ranges at least comprise a head direction, a behind-the-ear direction and an in-the-ear direction;
in step 302, determining an auditory range to which the orientation information of the main sound signal belongs;
the division of the hearing threshold is divided into three main directions, namely a head direction, a behind-the-ear direction and an in-the-front-of-the-ear direction, because the head has the largest attenuation capacity to sound, the next behind the ear and the best in-the-front ear;
in step 303, calculating a corresponding amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range and generating an output signal accordingly;
the current signal of main sound signal can play the public address effect after amplifier enlargies for listen the barrier patient and can hear clear sound, it is worth mentioning, with the position information of main sound signal and the position information phase-match of wearing of hearing aid equipment, can compensate sound signal's the effect of sheltering from according to patient's head, ear, make to listen the barrier patient on the basis that hearing aid was worn to the monaural, still can all-roundly perception ambient sound environment's change.
In one embodiment, as shown in fig. 4, in step S303, the calculating a desired amplification factor of the main sound signal according to the predetermined program corresponding to the determined hearing range and generating an output signal therefrom includes the following steps S401 to S402:
in step S401, the division range of the auditory range and the attenuation formulas corresponding to different division ranges are obtained;
can draw the efficiency of sheltering from that sound passed head, ear through the experiment, for guaranteeing to listen the requirement of barrier patient to audiphone precision, when carrying out the calibration of hearing aid equipment, can place audio frequency check out test set at the both sides ear of hearing barrier patient, can compare the loss difference of the sound that different position sent between head, ear different position like this to this calculates the attenuation formula that different partition ranges correspond.
In step S402, reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal;
the main sound signal in the divided range is amplified for the second time, and the amplification factor is the reverse of the main sound signal and the relative direction attenuation formula, which exemplifies: x is the audio intensity after attenuation, Y is the coefficient of the attenuation formula, wherein, Y value corresponds different partition ranges and is divided into Y1, Y2, Y3, Y4, Y5 and the like respectively, Z is the audio intensity before attenuation, so known X, Y value can deduce Z value, and the hearing-impaired patient can keep better sound receiving ability under the condition that the hearing-aid equipment is worn by one ear.
The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods.
Fig. 5 is a block diagram of a hearing aid device for eliminating the head shadow effect, which can be implemented by software, hardware or a combination of both as part or all of a device. As shown in fig. 5, the apparatus includes:
the sensing module 1 is used for generating at least one input signal from sound signals of the surrounding environment, wherein the input directions of the input signals have difference;
a first processing module 2, configured to perform a modification process on the input signal and generate a main sound signal therefrom, where the modification process includes removing or reducing an amplitude of a specific range of frequencies of the input signal;
the calculating module 3 is configured to calculate azimuth information of the main sound signal according to difference information between different input signals, where the difference information includes size information, time information, and distribution information of the input signals;
and the second processing module 4 is used for adjusting the size of the main sound signal according to the difference information among different input signals, the orientation information of the main sound signal and the orientation information of the hearing-aid equipment and generating an output signal.
According to the device of the disclosed embodiment, the periphery of the input signal is divided into a plurality of hearing ranges such as a head direction, a behind-the-ear direction and an in-front direction, and the direction information of the main sound signal is calculated through the difference information among different input signals, so that the hearing range to which the main sound signal belongs can be judged; through the position information of wearing with main sound signal and hearing aid equipment position information phase-match, can compensate to the effect of sheltering from of sound signal according to patient's head, ear for listen the barrier patient on the basis that hearing aid was worn to monaural, still can all-round perception ambient sound environment's change, eliminated the influence of head shadow effect to hearing aid equipment, to listening activities such as barrier patient's work, life, study, trip big useful department.
In an embodiment, as shown in fig. 6, the computing module 3 includes:
an obtaining module 31, configured to obtain time information for capturing a same sound signal by using different input signals, where the same sound signal has a same sound frequency;
a first calculating submodule 32, configured to calculate a difference value between time information of capturing the same sound signal by different input signals;
and a second calculating submodule 33, configured to calculate, with reference to the difference value and the distribution information of the input signal, azimuth information of the main sound signal, where the azimuth information is spatial position information.
In an embodiment, as shown in fig. 7, the second processing module 4 includes:
a directional module 41, configured to divide the input signal into a plurality of auditory ranges, where the auditory ranges at least include a head direction, a behind-the-ear direction, and an in-front-of-the-ear direction;
a determining module 42, configured to obtain a division range of the hearing range and attenuation formulas corresponding to different division ranges;
and the simulation module 43 is configured to reversely process the input signal by using the attenuation formulas corresponding to different division ranges to generate an output signal.
In one embodiment, as shown in fig. 8, the simulation module 43 includes:
an obtaining module 431, configured to obtain a division range of the hearing range and attenuation formulas corresponding to different division ranges;
and the simulation module 432 is configured to reversely process the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
The disclosed embodiment further provides a hearing aid device for eliminating the head shadow effect, as shown in fig. 9, including:
a processor 101;
a memory 102 for storing instructions executable by the processor 101;
wherein the processor 101 is configured to:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
The processor 101 may be further configured to:
the method for calculating the direction information of the main sound signal according to the difference information between different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals, and comprises the following steps:
acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
calculating to obtain difference values of time information of capturing the same sound signal by different input signals;
and calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, wherein the direction information is spatial position information.
The processor 101 may be further configured to:
the adjusting the magnitude of the main sound signal and thereby generating the output signal based on the difference information between different ones of the input signals, the orientation information of the main sound signal, and the orientation information of the hearing assistance device, comprising:
dividing the periphery of the input signal into a plurality of hearing ranges, wherein the hearing ranges at least comprise a head direction, a behind-the-ear direction and a front-of-the-ear direction;
determining an auditory range to which the azimuth information of the main sound signal belongs;
and calculating the corresponding amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range, and generating an output signal according to the amplification factor.
The processor 101 may be further configured to:
the calculating the corresponding amplification factor of the main sound signal according to the determined preset program corresponding to the hearing range and generating the output signal according to the amplification factor comprises the following steps:
acquiring the division range of the hearing range and attenuation formulas corresponding to different division ranges;
and reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Fig. 9 is a block diagram of another hearing device for eliminating the head shadow effect according to the present invention, which is suitable for a hearing aid.
The hearing assistance device may include one or more of the following components: processing component 100, memory 102, communication component 110, input/output interface 120, power component 130, multimedia component 140, sensor component 150, and audio component 160. The processing component 100 generally controls the overall operation of the hearing assistance device, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing assembly 100 may include one or more processors 101 to execute instructions to perform all or part of the steps of the method described above. Further, the processing component 100 can include one or more modules that facilitate interaction between the processing component 100 and other components. For example, the processing component 100 may include a multimedia module to facilitate interaction between the multimedia component 140 and the processing component 100.
The memory 102 is configured to store various types of data to support operation at the hearing assistance device. Examples of such data include instructions for any application or method operating on the hearing assistance device, contact data, phone book data, messages, pictures, videos, and so forth. The memory 102 may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. The power supply assembly 130 provides power to the various components of the hearing assistance device. The power supply components 130 can include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for hearing assistance devices.
The multimedia component 140 includes a screen that provides an output interface between the hearing assistance device and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 140 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera can receive external multimedia data when the hearing aid device is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability. The audio component 160 is configured to output and/or input audio signals. For example, the audio component 160 can include a Microphone (MIC) configured to receive an external audio signal when the hearing assistance device is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 102 or transmitted via the communication component 110. In some embodiments, the audio assembly 160 further includes a speaker for outputting audio signals. The input/output interface 120 provides an interface between the processing component 100 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button. The sensor assembly 150 includes one or more sensors for providing various aspects of state assessment for the hearing assistance device. For example, the sensor assembly 150 can detect the on/off state of the hearing aid device, the relative positioning of the components, such as the display and keypad of the hearing aid device, the sensor assembly 150 can also detect a change in the position of the hearing aid device or a component of the hearing aid device, the presence or absence of user contact with the hearing aid device, the orientation or acceleration/deceleration of the hearing aid device, and a change in the temperature of the hearing aid device. The sensor assembly 150 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 150 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 150 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
The communication component 110 is configured to facilitate wired or wireless communication between the hearing assistance device and other devices. The hearing assistance device can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication part 110 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 110 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an exemplary embodiment, the hearing assistance device can be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.
In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 102 comprising instructions, executable by the processor 101 of the hearing assistance device to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
A non-transitory computer readable storage medium having instructions therein which, when executed by a processor 101 of a hearing device, enable the hearing device to remove the effects of a head shadow effect associated with wearing a hearing aid in a single ear, the method comprising:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
In one embodiment, the calculating the direction information of the main sound signal according to the difference information between different input signals, where the difference information includes size information, time information, and distribution information of the input signals, includes:
acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
calculating to obtain difference values of time information of capturing the same sound signal by different input signals;
and calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, wherein the direction information is spatial position information.
In one embodiment, the adjusting the magnitude of the main sound signal and thereby generating the output signal based on the difference information between the different input signals, the orientation information of the main sound signal, and the orientation information of the hearing assistance device includes:
dividing the periphery of the input signal into a plurality of hearing ranges, wherein the hearing ranges at least comprise a head direction, a behind-the-ear direction and a front-of-the-ear direction;
determining an auditory range to which the azimuth information of the main sound signal belongs;
and calculating the corresponding amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range, and generating an output signal according to the amplification factor.
In an embodiment, the calculating a desired amplification factor of the main sound signal according to a predetermined program corresponding to the determined hearing range and generating an output signal therefrom includes:
acquiring the division range of the hearing range and attenuation formulas corresponding to different division ranges;
and reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
In the description of the present patent application, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present patent. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above examples are only used to illustrate the technical solutions of the present invention, but not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; the modifications or substitutions do not make the essence of the corresponding technical solution depart from the scope of the technical solutions of the embodiments of the patent of the present invention, and the technical solutions are all covered in the claims and the specification of the patent of the present invention.
Claims (9)
1. A hearing aid method for eliminating the effect of head shadows, comprising:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
2. The method according to claim 1, wherein said calculating the direction information of the main sound signal according to the difference information between different input signals, the difference information including size information, time information, and distribution information of the input signals comprises:
acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
calculating to obtain difference values of time information of capturing the same sound signal by different input signals;
and calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, wherein the direction information is spatial position information.
3. The method of claim 1, wherein adjusting the magnitude of the primary sound signal and producing the output signal based on the information about the difference between the different input signals, the information about the orientation of the primary sound signal, and the information about the orientation of the hearing assistance device comprises:
dividing the periphery of the input signal into a plurality of hearing ranges, wherein the hearing ranges at least comprise a head direction, a behind-the-ear direction and a front-of-the-ear direction;
determining an auditory range to which the azimuth information of the main sound signal belongs;
and calculating the corresponding amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range, and generating an output signal according to the amplification factor.
4. The method of claim 3, wherein calculating the desired amplification of the primary sound signal according to the predetermined program corresponding to the determined hearing range and generating the output signal therefrom comprises:
acquiring the division range of the hearing range and attenuation formulas corresponding to different division ranges;
and reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
5. A hearing device for removing the effect of head shadows, comprising:
the sensing module is used for generating at least one input signal from sound signals of the surrounding environment, and the input directions of the input signals have difference;
a first processing module for performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing an amplitude of a specific range of frequencies of the input signal;
the calculation module is used for calculating the direction information of the main sound signal according to the difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
and the second processing module is used for adjusting the size of the main sound signal according to the difference information among different input signals, the orientation information of the main sound signal and the orientation information of the hearing-aid equipment and generating an output signal.
6. The apparatus of claim 5, wherein the computing module comprises:
the capturing module is used for acquiring time information of capturing the same sound signal by different input signals, wherein the same sound signal has the same sound frequency;
the first calculation submodule is used for calculating a difference value of time information of capturing the same sound signal by different input signals;
and the second calculation submodule is used for calculating the direction information of the main sound signal by referring to the difference value and the distribution information of the input signal, and the direction information is space position information.
7. The apparatus of claim 5, wherein the second processing module comprises:
the setting module is used for dividing the periphery of the input signal into a plurality of hearing ranges, and the hearing ranges at least comprise a head direction, a behind-the-ear direction and an in-front-of-ear direction;
the determining module is used for determining the hearing range to which the azimuth information of the main sound signal belongs;
and the simulation module is used for calculating the required amplification factor of the main sound signal according to a preset program corresponding to the determined hearing range and generating an output signal accordingly.
8. The apparatus of claim 7, wherein the simulation module comprises:
the acquisition module is used for acquiring the division range of the hearing range and attenuation formulas corresponding to different division ranges;
and the analog module is used for reversely processing the input signal by using attenuation formulas corresponding to different division ranges to generate an output signal.
9. A hearing device for removing the effect of head shadows, comprising:
a processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to:
generating at least one input signal from sound signals of a surrounding environment, wherein the input directions of the input signals have difference;
performing a modification process on the input signal and thereby generating a main sound signal, the modification process including removing or reducing the amplitude of a specific range of frequencies of the input signal;
calculating azimuth information of a main sound signal according to difference information among different input signals, wherein the difference information comprises size information, time information and distribution information of the input signals;
the main sound signal is adjusted in size according to the difference information between different input signals, the orientation information of the main sound signal and the orientation information of the hearing aid device and an output signal is generated accordingly.
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