CN202998463U - Neck hanging hearing aid - Google Patents
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- CN202998463U CN202998463U CN 201220678962 CN201220678962U CN202998463U CN 202998463 U CN202998463 U CN 202998463U CN 201220678962 CN201220678962 CN 201220678962 CN 201220678962 U CN201220678962 U CN 201220678962U CN 202998463 U CN202998463 U CN 202998463U
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Abstract
The utility model provides a neck hanging hearing aid. The neck hanging hearing aid comprises a neck hanging device which is internally provided with a digital audio processing unit, a first microphone and a second microphone which are arranged at left and right sides of the neck hanging device, a third microphone which is arranged at a back portion of the neck hanging device, and a first earphone which is in electrical connection with the neck hanging device, and the first, second and third microphones and the first earphone are respectively in electrical connection with the digital audio processing unit. The neck hanging hearing aid is easy to design, is convenient to use and can realize directional reception of a sound signal in a special orientation, so background noise is effectively reduced, and a signal-to-noise ratio of the neck hanging hearing aid is substantially improved.
Description
Technical field
The utility model relates to a kind of hearing aids, particularly a kind of neck hanging type hearing aids.
Background technology
Present hearing aids can be divided into two kinds of monaural formula and dual-lug types from wearing pattern.Monaural formula hearing aids is suitable for monaural to be worn, such as duct-type, inner ear type, hard of hearing formula etc., and its defective is to be difficult to the sound source of periphery is carried out solid (3D) positioning analysis and noise elimination.The dual-lug type hearing aids is suitable for ears and wears, usually microphone is arranged on an etui, and this etui can hang on pocket, clothing or waistband, similar people use the situation of MP3, but this design also can't realize the 3D positioning analysis of sound and noise are eliminated.
In order to solve the problem of auditory localization, the Chinese utility model patent that name is called " hearing assistance system of application of beam forming technique " has disclosed for No. 200720143056.8 and a kind of two microphones has been disposed at respectively two, user left and right ear, then pass through fixed beam moulding realization to the method for the directional reception of forward direction sound, thereby reach the purpose that reduces noise and improve the hearing aids signal to noise ratio.The Chinese invention patent application that name is called " a kind of sound source positioning method for glasses type digital hearing aid " has disclosed a kind of hearing-aids that includes four microphones for the 200910028 No. 636.6, described microphone is arranged at respectively on the framework of the glasses left and right sides and forms the microphone square formation of a quaternary, go out the physical location of sound source by the time-delay calculation to described each signal of microphone square formation, and realize thus the enhancing of directed voice signal or the inhibition of noise signal.
The above-mentioned method that strengthens effective sound and suppress noise by the configuration to the microphone array is the effective ways that digital hearing-aid improves signal to noise ratio.In actual applications, the quantity of microphone is more, and spacing is larger, and the effect of its auditory localization is also just better.Yet be subjected to hearing aids to wear the restriction of pattern, realize effective microphone array configuration and be not easy, for example above-mentioned No. 200720143056.8 patent adopts 2 microphone arrangement can only realize the 2D location of sound; Although and configurable 4 microphones of No. 200910028636.6 patent application and realize 3D location, these microphones all are configured on spectacle-frame, are difficult in actual applications realize.
The utility model content
Technical problem to be solved in the utility model is, for the technical deficiency of above-mentioned existing product, provides a kind of location that can effectively realize sound source, also has simultaneously the neck hanging type hearing aids that is easy to design and facilitate handling characteristics.
In order to solve the problems of the technologies described above, the utility model embodiment provides a kind of neck hanging type hearing aids, comprising:
Hang the neck device, described extension neck device is built-in with digital audio processing unit;
Be arranged on first, second microphone of the described extension neck device left and right sides, and be arranged on the 3rd microphone at described extension neck device rear portion; And
The first earphone with described extension neck device electrical connection;
Described first, second, third microphone and the first earphone are electrically connected with described digital audio processing unit respectively.
Further, on described the first earphone, the 4th microphone is set, with described digital audio processing unit electrical connection, the common three-dimensional array that forms four microphones of described the first microphone to the four microphones.
Further, also comprise the second earphone with described extension neck device electrical connection, on described the second earphone, the 5th microphone is set, with described digital audio processing unit electrical connection, the common three-dimensional array that forms five microphones of described the first microphone to the five microphones.
Further, described extension neck device also is built-in with vertical audio frequency delay parameter setting unit of vertical range of receiving when directional reception is set, and is provided with at described extension neck apparatus surface the directional reception that is electrically connected to described vertical audio frequency delay parameter setting unit and vertically adjusts button.
Further, described extension neck device also is built-in with the horizontal audio frequency delay parameter setting unit of horizontal range of receiving when directional reception is set, and is provided with at described extension neck apparatus surface the directional reception that is electrically connected to described horizontal audio frequency delay parameter setting unit and laterally adjusts button.
Further, be provided be used to the omnidirectional that enables or shield described vertical audio frequency delay parameter setting unit/directed selector switch at described extension neck apparatus surface, described omnidirectional/directed selector switch is electrically connected with described vertical audio frequency delay parameter setting unit and digital audio processing unit respectively.
Further, be provided be used to the omnidirectional that enables or shield described horizontal audio frequency delay parameter setting unit/directed selector switch at described extension neck apparatus surface, described omnidirectional/directed selector switch is electrically connected with described horizontal audio frequency delay parameter setting unit and digital audio processing unit respectively.
Further, described digital audio processing unit comprises:
Analog/digital converter, digital audio memory, digital audio processor and the digital/analog converter of order electrical connection;
Described analog/digital converter will become digital signal through analog-to-digital conversion from the audio signal that arbitrary described microphone receives, and be sent to described digital audio memory stores.
Further, described digital audio processing unit comprises:
Timing unit, noise characteristic analytic unit and the noise characteristic memory of order electrical connection;
Described timing unit is eliminated button with the noise that is arranged on described extension neck apparatus surface and is electrically connected to, and is used for the time that described noise elimination button is pressed is carried out timing;
Described noise characteristic analytic unit is eliminated the action of pressing of button in response to described noise, extract its noise characteristic from the digital audio and video signals of described digital audio memory stores, and be sent to described noise characteristic memory stores;
Described digital audio processor is from described noise characteristic memory fetch noise characteristic, and the digital audio and video signals of described digital audio memory stores is carried out the noise Processing for removing.
Further, described the first to the 5th microphone is omnidirectional microphone.
The beneficial effect that the utlity model has is, is easy to design, the convenient use, and the voice signal of orientable reception particular orientation, thus effectively reduce background noise, and significantly improve the signal to noise ratio of hearing aids.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or description of the Prior Art, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the front appearance schematic diagram of the neck hanging type hearing aids that provides of the utility model embodiment one.
Fig. 2 is the front appearance schematic diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.
Fig. 3 is the side schematic appearance of the neck hanging type hearing aids that provides of the utility model embodiment two.
Fig. 4 is auditory localization and the sound directional reception schematic diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.
Fig. 5 is sound directional reception and the angle regulation function block diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.
Fig. 6 is the overall structure block diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.
Fig. 7 is the noise cancellation block diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
Please refer to shown in Figure 1, the front appearance schematic diagram of a kind of neck hanging type hearing aids 100 that provides for the utility model embodiment one.This neck hanging type hearing aids 100 comprises hangs neck device 101 and first earphone 102 and second earphone 104 of electrical connection on extension neck device.According to different application scenarios, also an earphone, i.e. monaural formula can only be set.
Also be provided with some hearing aidss and control buttons or knob in hanging neck device 101, comprising volume adjusting button (+/-button) 121, be used for regulating the hearing aids volume; Left and right balance adjustment button (L/R button) 122, for the volume of balanced left and right earphone, the volume that order exports user's ears to is consistent; The directional reception lateral angles is adjusted button 123, and the horizontal receiving angle of capable of regulating forward direction sound makes hearing aids optionally receive the interior sound of horizontal special angle scope; Directional reception is vertically adjusted button 124, and vertical receiving angle of capable of regulating forward direction sound (range of receiving can be adjusted up or down) is with the noise outside further elimination specified scope.
Except the above-mentioned functions button, also further be provided with omnidirectional on the extension neck device 101 of the present embodiment and receive button 131, when this button is pressed, the directional reception function of hearing aids meeting conductively-closed, the user can hear the 360 omnibearing sound of degree; And will recover the directional reception function time, can be by directional reception button 132.The hearing aids of the utility model embodiment also has wireless blue tooth telephone receiving function, in the time will receiving calls, can press Bluetooth control button 133; The present embodiment also includes a noise and eliminates button 135 in addition, when the user wishes to eliminate some the specific noise that receives, can press this button and catch these specific noise, and then hearing aids will fall these noise filterings automatically.
The first earphone 102 is electrically connected to by the first earphone cord 103 digital audio processing unit interior with hanging neck device 101, and the second earphone 104 is electrically connected to by the digital audio processing unit in the second earphone cord 105 and extension neck device 101.Be understandable that, the first earphone cord 103 and the second earphone cord 105 are only a kind of examples of the present embodiment, the first earphone 102 and the second earphone 104 can pass through other wired modes or wireless mode, and the digital audio processing unit interior with hanging neck device 101 is electrically connected to respectively.
The hearing aids of the utility model embodiment is mainly to realize described localization of sound and noise elimination by the microphone array that above-mentioned the first to the 3rd microphone forms.In Fig. 1, sound source 150 is positioned at the dead ahead of hearing aids 100, and 151 ~ 158 is the sound wave that is produced and propagated in air by sound source 150.As can be seen from Figure 1, sound wave 155 arrives the position of the first microphone 111 and second microphone 112 simultaneously, and namely the first microphone 111 and second microphone 112 can receive the sound wave from sound source 150 simultaneously.But the time that sound wave 155 arrives the 3rd microphone 113 is later than the time that it arrives the first microphone 111 and second microphone 112.Because the microphone array that first microphone 111 of the present embodiment, second microphone 112 and the 3rd microphone 113 form is triangular in shape, the sound wave that same sound source is sent all has at least one microphone can postpone to receive, utilize this function to analyzing from the acoustic phase potential difference (time delay) of same sound source, can judge the orientation of sound source, for example receive the time difference of sound wave 155 according to the first microphone 111, second microphone 112 and the 3rd microphone 113, can judge the dead ahead that sound source 150 is positioned at the user.Simultaneously, utilize this time-delay analysis, the audio signal that the time delay of the sound that receives (can be regulated) within the specific limits just can be play in earphone, so just can the noise filtering that specified scope is outer fall, thereby make the signal to noise ratio of hearing aids be able to effective lifting.
Please refer to again shown in Figure 2, the front appearance schematic diagram of a kind of neck hanging type hearing aids 100 that provides for the utility model embodiment two.Be with the difference of embodiment one, the neck hanging type hearing aids 100 of the present embodiment is provided with the 4th microphone 114 on the first earphone 102, be provided with the 5th microphone 115 on the second earphone 104, with the first microphone 111, second microphone 112 and the 3rd common three-dimensional array that forms 5 microphones of microphone 113, can realize 3D location and the noise of sound source are eliminated thus.In Fig. 2, sound source 150 also is positioned at the dead ahead of hearing aids 100, and 151 ~ 158 is the sound wave that is produced and propagated in air by sound source 150.As can be seen from Figure 2, sound wave 155 arrives the position of the first microphone 111 and second microphone 112 simultaneously, postpones also to arrive simultaneously the 4th microphone 114 and the 5th microphone 115 after a period of time, more arrives the 3rd microphone 113 after postponing a period of time.The same with embodiment one, the hearing aids of the present embodiment has the analytic function that carries out from the acoustic phase potential difference (time delay) of same sound source, only have the audio signal that the time delay of the sound that the first to the 5th microphone receives (can be regulated) within the specific limits just can play in earphone, so just, can the noise filtering that specified scope is outer fall, thereby make the signal to noise ratio of hearing aids be able to effective lifting.
The below please refer to shown in Figure 3, the side schematic appearance of the neck hanging type hearing aids that provides for the utility model embodiment two.The first earphone 102(comprises the 4th microphone 114), the second earphone 104(comprises the 5th microphone 115) be on the position of user (not shown) ear (due to the end view relation, 102 and 104 is overlapping, 114 and 115 is overlapping), hang neck device 101 and hang on user (not shown) neck.The first microphone 111 and second microphone 112 are arranged to be hung on neck device 121 (due to the end view relation, 111 and 112 is overlapping), is positioned at the below of the 4th microphone 114 and the 5th microphone 115; The 3rd 113 of microphones are arranged in the left (namely being in user's rear) of Fig. 3.Sound source 150 is positioned at the user dead ahead, is respectively r1, r2 with the distance of the first microphone 111, second microphone 112, is respectively r4, r5 with the distance of the 4th microphone 114, the 5th microphone 115, with the distance of the 3rd microphone 113 be r3.Be positioned at dead ahead and the by-level position of hearing aids due to sound source 150, therefore the first microphone 111, second microphone 112, the 4th microphone 114, the 5th microphone 115 these four microphones can receive the audio signal (phase difference is zero) that sound source 150 is sent simultaneously, r1=r2=r4=r5 is namely arranged, and the 3rd microphone 113 is due to the rear that is positioned at the user, therefore it receives the signal from sound source 150 at the latest, thereby can judge that sound is from the place ahead of user but not the rear.The utility model is just by calculating the position of sound source 105 to the analysis of the first to five microphone voice time delay, and the audio signal of sound source 150 is amplified, and with noise filtering or the elimination in other orientation.
Please refer to shown in Figure 4, auditory localization and the sound directional reception schematic diagram of the neck hanging type hearing aids that provides for the utility model embodiment two.In figure, m1, m2 are for being positioned at first, second (or the 4th, 5th) two microphones of user (not shown) the right and left, d is the spacing (the face's width that is equivalent to the user) of described two microphones, m3 is the 3rd microphone that is positioned at the user rear portion, S is sound source, the distance of sound source S two microphones from the left and right is respectively r1 and r2, distance from the 3rd microphone is r3, and the angle that forms with left side microphone is α, with the angle of user's medial axis be β.Suppose that sound is 340m/s when airborne propagation velocity is v(15 ° of C), time delay is set to τ (supposing that namely the sound that sound source S sends is just τ in the time delay that m1, m2 receiving terminal produce), time delay τ corresponding apart from x=τ v(x＜=d), computing formula is arranged namely:
X=r1-r2 reaches
cosα =（d+w）/r1
Can obtain through decomposition operation:
cosα = x/d + (d
2-x
2) / 2dr1
When sound source S was far from the user, r1 approached infinity with respect to d and x, has:
cosα ≈ x/d = τv/d
β ≈ 90°- α = 90°- arccos（τv/d）
When τ v=0 (signal time delay from sound source S that m1, m2 receive is 0, and the distance that time delay produces is also 0), β=0 ° is arranged, at this moment hearing aids receives only the sound of the 0 ° of scope in dead ahead; And as τ v during in 0 ~ d/2 scope (distance that time delay produces is no more than face's width half), 0 ~ 30 ° of scope of β correspondence, at this moment hearing aids can receive the sound in positive and negative 30 ° of the place ahead; And as τ v during in 0 ~ d scope (distance that time delay produces is in face's width), 0 ~ 90 ° of scope of β correspondence, hearing aids can receive the sound of 180 °, the place ahead (positive and negative 90 °).
Like this in the utility model embodiment, can calculate according to the time delay τ of different microphones the orientation of sound source S on the one hand, on the other hand also can be by the voice signal that arranges selectivity to receive to be positioned at user dead ahead certain angle scope to time delay τ, and with this extraneous noise attentuation or elimination, thereby the signal to noise ratio of raising hearing aids.
Again as shown in Figure 5, be sound directional reception and the angle regulation function block diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.In the present embodiment, the neck hanging type hearing aids comprises microphone (the first to the 5th microphone) after four of up and down/left and right microphone and, and two of left and right earphone (first, second earphone), and wherein the output of earphone is subjected to the control of digital audio processing unit.Be arranged in the inside that hangs neck device 101 at control circuit 200(), also include vertical audio frequency delay parameter setting unit and horizontal audio frequency delay parameter setting unit.in use, first, second microphone is usually located at user's neck place, and the 4th, the 5th microphone is positioned at user's ear place, namely there is difference in height in the vertical in the position of four microphones, sound wave on can making thus vertically arrives first, second microphone and the 4th, there is time delay during the 5th microphone, the sound wave that for example transmits from user top can first arrive the 4th, the 5th microphone, just arrive again first, second microphone, so by vertical audio frequency delay parameter setting unit, delay parameter τ being arranged (please refer to shown in Figure 4, the scope that arranges of τ is 0 ~ d/v, range of receiving corresponding to 0 ~ 180 °), vertical range of receiving in the time of can directional reception being set.In like manner, in use, first, second microphone is usually located at the left and right sides of user's neck, and the 4th, the 5th microphone also is positioned at user's ear place, left and right, i.e. the position of first, second microphone location poor (also the location is poor in the horizontal in the position of the 4th, the 5th microphone) in the horizontal.When sound source during in the user dead ahead, be first, second microphone that the left and right arranges and can receive simultaneously sound wave (this moment aforementioned location poor is zero).If but sound source is offset a little, just time delay appears in the time that the alternate position spike that first, second microphone exists can cause receiving sound wave, sound source is kept right, and the microphone on the right will first receive signal, otherwise the microphone on the left side will first receive signal.So by horizontal audio frequency delay parameter setting unit, delay parameter τ is arranged (concrete with reference to shown in Figure 4, the scope that arranges of τ is 0 ~ d/v, corresponding to the range of receiving of 0 ~ 180 °), horizontal range of receiving in the time of can directional reception being set.For ease of user's setting operation, be provided with directional reception and vertically adjust button (or knob) hanging neck device 101 surfaces, be electrically connected to vertical audio frequency delay parameter setting unit; Be provided with directional reception and laterally adjust button (or knob) hanging neck device 101 surfaces, be electrically connected to horizontal audio frequency delay parameter setting unit.Front and back position as for sound is differentiated by rear microphone (the 3rd microphone).
Also include omnidirectional/directed selector switch (can be two independent switches or a diverter switch) in Fig. 5, can control above-mentioned delay parameter setting unit, can enable described delay parameter setting unit or shield described delay parameter setting unit, make the directional reception function of hearing aids and omnidirectional's receiving function be selected or switch by described control.Described omnidirectional/directed selector switch is direct control figure audio treatment unit also, enables directional reception (being set by parameter τ) or shielding directional reception, and when the directional reception conductively-closed, hearing aids can receive the sound of 360 ° of omnidirectionals.
The below please refer to shown in Figure 6 again, the overall structure block diagram of the neck hanging type hearing aids that provides for the utility model embodiment two.In figure, Mic1 ~ Mic5 is the first to the 5th microphone, these 5 microphones are first through an A/D converter (analog/digital converter) in the drawings, and then be transported to digital signal processor (DSP, in include digital audio processing unit) 300(is positioned at and hangs neck device 101 inside, 300 can be also other special-purpose digital integrated circuit chip), deliver to again two earphones in left and right (first, second earphone) after by digital signal processor 300, microphone signal being processed and play.
All functions shown in Figure 5 have been comprised at Fig. 6, except directional reception longitudinal adjusting device, directional reception transverse adjustment device, omnidirectional receive button, directional reception button, also include volume adjustment device, left and right balance regulator, and bluetooth module, this bluetooth module can with related mobile communication, make hearing aids have simultaneously the function of wireless blue tooth earphone.In order to coordinate these above-mentioned functions, also include telephone receiving button, rechargable battery and charging inlet etc. in the utility model embodiment.
In order to promote the performance of hearing aids, the hearing aids of the present embodiment also includes a user program/arrange interface, can be by external equipment (such as computer or Special programming etc.) to the hearing aids setting of programming, the frequency compensation curve of each ear output of hearing aids for example is set, or carries out other Extraordinary function setting.In addition, hearing aids also is provided with the noise of a uniqueness and eliminates button, can catch and eliminate the noise with some obvious characteristic that the user hears, for example the air-conditioning sound of office, road automobile/train sound, tucket, and building site noise, domain piling sound etc.
The function that above-mentioned noise is eliminated button will be further described below, please refer to shown in Figure 7ly, is the noise cancellation block diagram of the neck hanging type hearing aids that provides of the utility model embodiment two.In figure, 400 can be digital signal processor DSP, can be also other digital processing element (for example special digital integrated circuit (IC) chip), and it is positioned at hangs neck device 101 inside.The audio signal that microphone receives first becomes digital signal through analog/digital conversion, then digital audio and video signals can first store in the digital audio memory, and these digital audio and video signals convert the output of simulated audio signal ear sending machine to through digital/analog converter again after digital audio processor (unit) is processed.
In figure, noise is eliminated button and is connected on a timing unit in 400, and after button was pressed, the noise characteristic analytic unit was started working, and extracts its noise characteristic from digital audio and video signals, and relevant data is stored on the noise characteristic memory.Further, timing unit can carry out timing to the time that button is pressed, and the noise characteristic of special time period (for example button discharges front last 2 seconds) is remained, eliminate the foundation of noise in signal work for the treatment of subsequently as digital audio processor, this practice catches some random sound (such as the tucket of road or the piling sound in domain etc.) that occur for convenience of the user, the user can first push button and wait for the appearance of noise, and letting go after hearing described noise gets final product.In addition, this timing unit also can make noise eliminate button and use as a composite-key, for example short this key (time is less than 0.5s) of pressing is used for the switching that noise is eliminated/recovered, and long this key (time is greater than 1s) of pressing is used for catching noise and entering the de-noising mode of operation.
Though should be noted that earlier figures 3-Fig. 7 is described as an example of embodiment two example, its theory and structure can be applicable to embodiment one equally.In addition, embodiment two has comprised the first earphone 102 and 104 two earphones of the second earphone, and namely dual-lug type, arrange respectively microphone on two earphones, with the common three-dimensional array that forms five microphones of the first to the 3rd microphone; In like manner also an earphone can only be set, namely the monaural formula, arrange microphone on this earphone, and is succinct for narrating with the common three-dimensional array that forms four microphones of the first to the 3rd microphone, theory and structure all similar, describes in detail no longer respectively.
Aforementioned each preferred embodiment of the present utility model can also have some different variations in actual applications, for example the microphone of diverse location and quantity can be set according to functional requirement; Hanging in neck device 101 also to increase other different functions, such as increasing radio function, MP3 function, Flash memory function etc.For the convenience on using, also LED light can be set on extension neck device 101, and the LCD LCDs etc.Microphone in above-mentioned the utility model embodiment is omnidirectional microphone, also can select in actual applications other microphones (for example shotgun microphone), receives and noise reduction to reach different sound.
In addition, neck hanging type structure of the present utility model provides a space that is fit to very much and is easy to fix to lay the required microphone apparatus of auditory localization, and relevant control circuit and cell apparatus etc., is better than the structure that background technology is mentioned.
Above disclosed is only the utility model preferred embodiment, certainly can not limit with this interest field of the utility model, and the equivalent variations of therefore doing according to the utility model claim still belongs to the scope that the utility model is contained.
Claims (10)
1. a neck hanging type hearing aids, is characterized in that, comprising:
Hang the neck device, described extension neck device is built-in with digital audio processing unit;
Be arranged on first, second microphone of the described extension neck device left and right sides, and be arranged on the 3rd microphone at described extension neck device rear portion; And
The first earphone with described extension neck device electrical connection;
Described first, second, third microphone and the first earphone are electrically connected with described digital audio processing unit respectively.
2. neck hanging type hearing aids according to claim 1, it is characterized in that, on described the first earphone, the 4th microphone is set, with described digital audio processing unit electrical connection, the common three-dimensional array that forms four microphones of described the first microphone to the four microphones.
3. neck hanging type hearing aids according to claim 2, it is characterized in that, also comprise the second earphone with described extension neck device electrical connection, on described the second earphone, the 5th microphone is set, with described digital audio processing unit electrical connection, the common three-dimensional array that forms five microphones of described the first microphone to the five microphones.
4. according to claim 1-3 described neck hanging type hearing aidss of any one, it is characterized in that, described extension neck device also is built-in with vertical audio frequency delay parameter setting unit of vertical range of receiving when directional reception is set, and is provided with at described extension neck apparatus surface the directional reception that is electrically connected to described vertical audio frequency delay parameter setting unit and vertically adjusts button.
5. according to claim 1-3 described neck hanging type hearing aidss of any one, it is characterized in that, described extension neck device also is built-in with the horizontal audio frequency delay parameter setting unit of horizontal range of receiving when directional reception is set, and is provided with at described extension neck apparatus surface the directional reception that is electrically connected to described horizontal audio frequency delay parameter setting unit and laterally adjusts button.
6. neck hanging type hearing aids according to claim 4, it is characterized in that, be provided be used to the omnidirectional that enables or shield described vertical audio frequency delay parameter setting unit/directed selector switch at described extension neck apparatus surface, described omnidirectional/directed selector switch is electrically connected with described vertical audio frequency delay parameter setting unit and digital audio processing unit respectively.
7. neck hanging type hearing aids according to claim 5, it is characterized in that, be provided be used to the omnidirectional that enables or shield described horizontal audio frequency delay parameter setting unit/directed selector switch at described extension neck apparatus surface, described omnidirectional/directed selector switch is electrically connected with described horizontal audio frequency delay parameter setting unit and digital audio processing unit respectively.
8. neck hanging type hearing aids according to claim 1, is characterized in that, described digital audio processing unit comprises:
Analog/digital converter, digital audio memory, digital audio processor and the digital/analog converter of order electrical connection;
Described analog/digital converter will become digital signal through analog-to-digital conversion from the audio signal that arbitrary described microphone receives, and be sent to described digital audio memory stores.
9. neck hanging type hearing aids according to claim 8, is characterized in that, described digital audio processing unit comprises:
Timing unit, noise characteristic analytic unit and the noise characteristic memory of order electrical connection;
Described timing unit is eliminated button with the noise that is arranged on described extension neck apparatus surface and is electrically connected to, and is used for the time that described noise elimination button is pressed is carried out timing;
Described noise characteristic analytic unit is eliminated the action of pressing of button in response to described noise, extract its noise characteristic from the digital audio and video signals of described digital audio memory stores, and be sent to described noise characteristic memory stores;
Described digital audio processor is from described noise characteristic memory fetch noise characteristic, and the digital audio and video signals of described digital audio memory stores is carried out the noise Processing for removing.
10. neck hanging type hearing aids according to claim 3, is characterized in that, described the first to the 5th microphone is omnidirectional microphone.
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| CN 201220678962 CN202998463U (en) | 2012-12-11 | 2012-12-11 | Neck hanging hearing aid |
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| CN 201220678962 CN202998463U (en) | 2012-12-11 | 2012-12-11 | Neck hanging hearing aid |
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| CN104410939A (en) * | 2014-10-16 | 2015-03-11 | 华为技术有限公司 | Sound image direction sense processing method and device |
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| CN111163411A (en) * | 2018-11-08 | 2020-05-15 | 塞舌尔商元鼎音讯股份有限公司 | Method for reducing interference sound influence and sound playing device |
| CN113825079A (en) * | 2021-09-11 | 2021-12-21 | 武汉左点科技有限公司 | Method and device for enhancing sound wave acceptance of hearing aid |
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