CN101904183B - Hearing aid - Google Patents
Hearing aid Download PDFInfo
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- CN101904183B CN101904183B CN2010800007814A CN201080000781A CN101904183B CN 101904183 B CN101904183 B CN 101904183B CN 2010800007814 A CN2010800007814 A CN 2010800007814A CN 201080000781 A CN201080000781 A CN 201080000781A CN 101904183 B CN101904183 B CN 101904183B
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power
- H04R25/305—Self-monitoring or self-testing
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
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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
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/61—Aspects relating to mechanical or electronic switches or control elements, e.g. functioning
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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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/603—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of mechanical or electronic switches or control elements
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Neurosurgery (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Circuit For Audible Band Transducer (AREA)
- Adornments (AREA)
- Finger-Pressure Massage (AREA)
Abstract
A hearing aid is provided with a microphone (1) for collecting sound, an A/D converter (2) for converting an analog signal outputted from the microphone (1) to a digital signal, a hearing aid treatment unit (3) for subjecting the digital signal outputted from the A/D converter (2) to hearing aid treatment, a D/A converter (4) for converting the signal subjected to the hearing aid treatment to an analog signal, and a receiver (5) for outputting the analog signal outputted from the D/A converter (4), as an acoustic signal, to the surrounding area thereof. A mixing unit (6), one input of which is connected to the output of the hearing aid treatment unit (3) and the output of which is connected to the input of the D/A converter (4), is disposed between the hearing aid treatment unit (3) and the D/A converter (4). The output of a notification sound processing unit (8) for processing a notification sound signal generated by a notification sound generation unit (7) is connected to the other input of the mixing unit (6). A control unit (9) for generating a mixing ratio signal for mixing the output signals of the hearing aid treatment unit (3) and the notification sound processing unit (8) is connected to the mixing unit (6).
Description
Technical field
The present invention relates to a kind of hearing aids of the sound of giving notice.
Background technology
Hearing aids in the past is made of following part, is respectively: microphone; The hearing aid handling part is implemented hearing aid to the collected sound of this microphone and is processed; Receiver (receiver) is exported the output signal of this hearing aid handling part as audible signal; Memory, its storaged voice (audio) message; Voice reproduction section, it reproduces this speech message; Battery, it provides electric power to these parts; Monitoring voltage section, it monitors the voltage of this battery.
If the predefined condition of this voltage conforms is then reproduced the speech message that is stored in the memory by voice reproduction section.Then, offer receiver (for example, with reference to patent documentation 1) after the output signal addition of the speech message after the reproduction and hearing aid handling part
Thus, when the voltage drop of battery, can the replacing of battery be notified to the user period by voice.
[patent documentation 1] Unexamined Patent 9-018997 communique
As above-mentioned technology, if notify the information to the user to be a kind, to be that warning tone is a kind, then can obtain preferably effect.
On the other hand, hearing aids in recent years has several functions, and notice also relates to many-side to user's information.Therefore, hearing aids change its voice (voice) or sound (sound) for the different information that will notify thus rhythm notify.Because the user will recognize the difference of the rhythm of these voice or sound, thereby confirm the information that hearing aids is notified, therefore concerning the user, need to clearly understand various warning tones.
But technology does not in the past realize the purpose of expection fully.That is to say, in the hearing aids in the past, thereby only be and carried out the voice signal addition of hearing aid after processing and reproduced warning tone.Therefore, there is following problem, that is: because of user's difference, because the frequency band that is difficult to hear is also different etc., so sometimes be difficult to for the user clearly understand warning tone.
Summary of the invention
Therefore, the objective of the invention is with different users's characteristic irrespectively, improve the definition of warning tone.
To achieve these goals, hearing aids of the present invention has: microphone, AD converter, hearing aid handling part, DA transducer, receiver, warning tone generating unit, warning tone processing department, mixing section, control part.Microphone picks up ambient sound.AD converter will be digital signal from the analog signal conversion of this microphone output.The hearing aid handling part is processed implementing hearing aid from the digital signal of this AD converter output.The signal that the DA transducer will have been implemented this hearing aid processing is converted to analog signal.Around receiver will export to as audible signal from the analog signal of this DA transducer output.Notice generating unit condition according to the rules generates warning tone.The warning tone processing department is processed the warning tone signal that is generated by the warning tone generating unit.The input of mixing section one is connected in the output of hearing aid handling part, and the output of self is connected in the input of DA transducer, is arranged between hearing aid handling part and the DA transducer.Connect the output of warning tone processing department in another input of this mixing section, this warning tone processing department is processed the warning tone signal that is generated by the warning tone generating unit.Control part generates the mixing ratio signal, and this mixing ratio signal is used for the output signal of hearing aid handling part and warning tone processing department being synthesized with the regulation mixing ratio by mixing section, and this control part is connected in the mixing ratio signal input terminal of mixing section.Have, the warning tone processing department has again: table converter section, notice gain determination section, multiplier.The gain table that the table converter section uses during the hearing aid of hearing aid handling part is processed is converted to the warning tone signal with the line output of going forward side by side.Notice gain determination section determines to notify accordingly gain with the warning tone signal according to the output signal of table converter section.Multiplier will be from notifying the gain notice gain application that determination section is exported in the warning tone signal from the output of warning tone generating unit.
Thus, can improve the definition of warning tone.Like this, the user can not hear the multiple warning tone of hearing aids, can confirm rightly the information of notifying.
Have, hearing aids of the present invention has again: microphone, AD converter, hearing aid handling part, DA transducer, receiver, warning tone generating unit, mixing section, control part.Microphone picks up ambient sound.AD converter will be digital signal from the analog signal conversion of this microphone output.The hearing aid handling part is processed implementing hearing aid from the digital signal of this AD converter output.The signal that the DA transducer will have been implemented this hearing aid processing is converted to analog signal.Around receiver will export to as audible signal from the analog signal of this DA transducer output.Notice generating unit condition according to the rules generates warning tone.The input of mixing section one is connected in the output of AD converter, and the output of self is connected in the input of hearing aid handling part, is arranged between AD converter and the hearing aid handling part.Another input side in this mixing section is inputted the warning tone signal that is generated by the warning tone generating unit.Control part generates the mixing ratio signal, and this mixing ratio signal is used for the output signal of AD converter and warning tone generating unit being synthesized with the regulation mixing ratio by mixing section, and this control part is connected in the mixing ratio signal input terminal of mixing section.
Have, the hearing aid handling part has again: frequency analysis section, gain adjustment part, frequency synthesis section, energy calculating part, control portion of gain.Frequency analysis section analyzes and exports as frequency information signal the frequency of the digital signal that inputs to this hearing aid handling part.The gain adjustment part is adjusted from the gain of the frequency information signal of this frequency analysis section output.Frequency synthesis section will carry out the frequency information signal that gain adjusts by the gain adjustment part and synthesize the time shaft signal.The energy calculating part is inputted from the frequency information signal of frequency analysis section output, and calculates the energy value of the digital signal that inputs to frequency analysis section according to this frequency information signal.The energy value that the control portion of gain input inputs to from the energy calculating part based on the gain in this energy value decision gain adjustment part, and exports the gain adjustment part to.
Have, control portion of gain has again: table memory, table selection portion, gain determination section.Table memory stores a plurality of tables are respectively: be used for the ambient sound that microphone picks up is carried out gain table that hearing aid processes, is used for the warning tone signal that the warning tone generating unit generates is carried out the warning tone table that hearing aid is processed.The table selection portion is read one of them of a plurality of gain table and warning tone table from the table memory according to the troubled water in the mixing section.Gain table or warning tone table that gain determination section use table selection portion is read are based on the gain from the energy value decision gain adjustment part of energy calculating part output.
Thus, can improve the definition of warning tone.Like this, the user can not hear the multiple warning tone of hearing aids, can confirm rightly the information of notifying.
Description of drawings
Fig. 1 is the functional block diagram of the hearing aids in the embodiments of the present invention 1.
Fig. 2 is the functional block diagram of this hearing aid handling part.
Fig. 3 is the functional block diagram of this warning tone processing department.
Fig. 4 is the functional block diagram of the hearing aids in the embodiments of the present invention 2.
Fig. 5 is the functional block diagram of this hearing aid handling part.
Fig. 6 is the figure of state that is illustrated in the sound pressure level of the ambient sound that changes on the time shaft.
Fig. 7 is the ambient sound of expression in the frequency band and the figure of the state of warning tone.
Fig. 8 is the figure of state that is illustrated in the sound pressure level of the ambient sound that changes on the time shaft and warning tone
Fig. 9 is the functional block diagram of the hearing aids in the embodiments of the present invention 6.
Among the figure:
The 1-microphone
The 2-AD transducer
3-hearing aid handling part
The 4-DA transducer
The 5-receiver
6-mixing section
7-warning tone generating unit
8-warning tone processing department
The 9-control part
10-frequency analysis section
The 11-adjustment part of gaining
12-frequency synthesis section
13-energy calculating part
The 14-control portion of gain
15-shows converter section
The 16-offset values storage
17-notice gain determination section
The 18-multiplier
19-hearing aid handling part
The 20-control portion of gain
21-shows memory
22-shows selection portion
The 23-determination section that gains
The 30-switching part
The 31-control part
Embodiment
Below, be elaborated with reference to the execution mode of accompanying drawing to hearing aids of the present invention.
(execution mode 1)
At first, utilize Fig. 1 that the structure of hearing aids is described.Fig. 1 represents the functional block diagram of hearing aids.
The hearing aids of present embodiment has as shown in Figure 1: microphone 1, AD (Analog to Digital) transducer 2, hearing aid handling part 3, DA (Digital to Analog) transducer 4, receiver 5.
In addition, 1 pair of ambient sound of microphone (ambient sound) is carried out pickup.AD converter 2 will be digital signal from the analog signal conversion of this microphone 1 output.3 pairs of digital signals from these AD converter 2 outputs of hearing aid handling part are implemented hearing aid and are processed.The signal that DA transducer 4 will have been implemented this hearing aid processing is converted to analog signal.Around receiver 5 will export to as audible signal from the analog signal of these DA transducer 4 outputs.
The hearing aids of present embodiment also has mixing section 6, control part 9 as shown in Figure 1.
In the mixing section 6, an input is connected in the output of hearing aid handling part 3, and the output of self is connected in the input of DA transducer 4, is arranged between hearing aid handling part 3 and the DA transducer 4.Connect the output signal of warning tone processing department 8 in another input of this mixing section 6, the warning tone signal that generates in 8 pairs of warning tone generating units 7 of this warning tone processing department is processed.
The signal of telecommunication that the ambient sound of 1 pair of hearing aids of microphone is carried out pickup and is converted to simulation is exported.
The digital signal that AD converter 2 will be converted to from the signal of telecommunication of the microphone 1 output multidigit line output of going forward side by side.
Next, utilize Fig. 2 that the structure of hearing aid handling part 3 is described.Fig. 2 represents the functional block diagram of hearing aid handling part 3.
Hearing aid handling part 3 has as shown in Figure 2: frequency analysis section 10, gain adjustment part 11, frequency synthesis section 12, energy (power) calculating part 13, control portion of gain 14.The output signal of frequency analysis section 10 input AD converter 2.The adjustment that gains of the output signal of gain adjustment part 11 pairs of these frequency analysis sections 10.Frequency synthesis section 12 will synthesize the time shaft signal from the signal of gain adjustment part 11 outputs.Energy calculating part 13 is according to the calculated signals energy value from 10 outputs of frequency analysis section.Control portion of gain 14 determines the gain of adjusting for the gain of gain adjustment part 11 based on the energy value from these energy calculating part 13 outputs.
The 11 pairs of frequency information signal from 10 outputs of frequency analysis section in gain adjustment part are multiplied by from the laggard line output of gain of control portion of gain 14 outputs.
The frequency information signal of the adjusted state of gain that frequency synthesis section 12 will export from gain adjustment part 11 synthesizes the signal of time domain from the signal of frequency domain, and exports as the signal of having implemented the hearing aid processing.When the conversion in frequency analysis section 10 used Fourier transform to carry out, this synthetic employing inverse Fourier transform got final product.On the other hand, above-mentioned conversion uses subband to cut apart when carrying out, and then adopts subband to synthesize and gets final product.
13 pairs of frequency computation part energy values from each frequency band of the frequency information signal of frequency analysis section 10 outputs of energy calculating part, and export control portion of gain 14 to.At this, so-called energy value refers to input to the power of the signal of frequency analysis section 10, and the sound pressure level of the ambient sound of picking up with microphone 1 has correlation.That is to say, then energy value is less if sound pressure level is low, if then energy value is larger for the sound pressure level height.
Control portion of gain 14 determines the corresponding gain of frequency information signal of each frequency band based on the energy value of each frequency band of exporting from energy calculating part 13.Adopt gain table (gaintable) in the decision of gain.The dynamic range of the sense of hearing is different because of the user.Therefore, need to carry out to the sound pressure level of input nonlinear gain adjustment according to its user.Therefore, based on the needed gain characteristics of user of being obtained by audiogram (audiogram) etc. in advance, make the gain table of the different-energy value having been stipulated gain.Control portion of gain 14 determines gain with reference to this gain table, and the gain that will determine exports gain adjustment part 11 to.Have again, this gain table is exported warning tone processing department 8.
In addition, prepare as this gain table multiple, will based on the required gain characteristic of user as benchmark, change its part and form multiple.For example, under user's the environment of making a lot of noise on every side, described table is used for cutting down its noise, perhaps cuts down the wind noise in moving.3 kinds of tables have been prepared in the present embodiment, be respectively: only considered gain table A, the employed gain table B in noise, the gain table C that in movement, uses of user's gain characteristic, switched by the control signal (and not shown) from control part 9.
These gain table are made by the external equipment of match (fitting) device etc. in advance, and are stored in the memory (and not shown) in the hearing aids.Control portion of gain 14 carries out reference according to taking out required gain table from the switching indication of outside from memory.
Returning Fig. 1 describes mixing section 6.
In the mixing section 6 input from the enforcement of hearing aid handling part 3 output the signal processed of hearing aid and from the signal of warning tone processing department 8 outputs.Mixing section 6 is based on the mixing ratio signal from control part 9 output that is connected to the mixing ratio signal input terminal, these input signal mixed, and export DA transducer 4 to.For example, if the mixing ratio of the output signal of the output signal of hearing aid handling part 3 and warning tone processing department 8 is made as 0: 10, the output signal of output notice sound processing department 8 only then.Have, if for example mixing ratio is made as 5: 5, then the output signal of hearing aid handling part 3 is mixed with par with the output signal of warning tone processing department 8 and is exported again.This mixing ratio can be set according to user's hobby by match etc.
DA transducer 4 will be converted to analog signal from the digital signal of the multidigit of mixing section 6 output, and export receiver 5 to.
Next, warning tone generating unit 7 and warning tone processing department 8 are described.
Warning tone generating unit 7 generates warning tone according to the indication from control part 9, and exports as the warning tone signal.This warning tone signal is made of single sound each notification mode of predesignating.
Be " Pi-, Pi-" this sound of 2kHz as notification mode A generated frequency in the present embodiment, as notification mode B generated frequency be 1kHz " Pi " this sound, be " Pi, Pi " this sound of 1kHz, be " Pi, Pi, Pi " this sound of 1 kHz as notification mode D generated frequency as notification mode C generated frequency.At this moment, the volume of these warning tone signals all is set as identical 110dBSPL.
Next, with reference to Fig. 3 the structure of warning tone processing department 8 is described.Fig. 3 represents the functional block diagram of warning tone processing department 8.
Warning tone processing department 8 has as shown in Figure 3: table converter section 15, offset values storage 16, notice gain determination section 17, multiplier 18.The gain table that table converter section 15 uses during the hearing aid of hearing aid handling part 3 is processed is converted to the warning tone signal with the line output of going forward side by side.Offset values storage 16, storage is used for the side-play amount to the additional different characteristic of each warning tone signal.Notice gain determination section 17 determines to notify accordingly gain with the warning tone signal based on the output signal of table converter section 15 and the side-play amount of exporting from offset values storage 16.Multiplier 18 will be from this notice gain application of notifying 17 outputs of gain determination section in the warning tone signal from 7 outputs of warning tone generating unit.
In the table converter section 15, the gain table (being gain table A the present embodiment) of user's gain characteristic has only been considered in control portion of gain 14 inputs in hearing aid handling part 3.Thereby table converter section 15 generates the warning tone table from the gain of the warning tone signal band that wherein extracts corresponding warning tone generating unit 7 and generate, and exports notice gain determination section 17 to.In the present embodiment, generate the warning tone table that has extracted the gain of 1kHz and 2kHz from gain table A.
Offset values storage 16 storage and the corresponding offset values of each notification mode, offset value are the values that the volume with the warning tone signal multiplies each other.For example, the offset value of notification mode A is made as 0.8, and the offset value of notification mode B, C and D is made as 0.5.Have, according to from the indication of control part 9 (and not shown), the offset value of the warning tone signal that corresponding warning tone generating unit 7 is generated exports notice gain determination section 17 to again.
Notice gain determination section 17 is based on the indication (and not shown) from control part 9, select to multiply by the corresponding gain of volume that offset value obtains with volume to the warning tone signal from the warning tone table, export gain and the offset value of this selection to multiplier 18 as notifying to gain.
In addition, in the hearing aids with volume adjustment function, input the volume value that sets in this notice gain determination section 17, and multiply each other with side-play amount.Notice gain determination section 17 is selected gain based on multiply by the offset value that this volume value obtains, and in addition, exports multiplier 18 to multiply by the offset value that this volume value obtains.
At this, notice gain determines that 17 carry out the amplitude limiting processing of selected gain and offset value, so that the volume of the warning tone signal of exporting from multiplier 18 can be not excessive or too small.This is in order to allow the user reliably and to confirm warning tone comfily and arrange, and is special more important in having the hearing aids of volume.
That is to say, warning tone is excessive for the user then feels under the weather, and too smallly then might allow the user confirm.In order to prevent this situation, notice gain 17 pairs of gains of determination section are adjusted with offset value, and the volume of the warning tone signal of exporting from multiplier 18 is in the scope of regulation.For example, when the volume of the input signal of multiplier 18 is 110dBSPL, should make the scope that the volume of the output signal of multiplier 18 is in 40dBSPL to 80dBSPL.
Again return Fig. 1, control part 9 is described.
When the user is notified, 9 pairs of warning tone generating units of control part 7 and the output of warning tone processing department 8 output notice tone signal and the indication of notification mode selection.Then, control part 9 is selected signals from the mode of the warning tone signal of warning tone processing department 8 outputs to 6 outputs of mixing section with selection.And then, the control signal of 9 pairs of hearing aid handling parts of control part, 3 output switching gain table A～C (and not shown).
Carrying out the decision in the moment of this notice and the selection of notification mode carries out as follows.
Particularly, providing the dump power of the power supply of electric power to each electronic unit of this hearing aids is setting when following, selects notification mode A.In control portion of gain 14, when being switched to gain table A, the gain table of using selects notification mode B, select notification mode C when switching to gain table B, select notification mode D when switching to gain table C.
By said structure, at ordinary times, when the user not being notified, the sound enforcement hearing aid that microphone 1 picks up is processed and exported from receiver 5.On the other hand, when the user is notified, and implemented sound that this hearing aid processes in the lump, the sound that warning tone generating unit 7 is generated implements to process with hearing aid the processing of same degree, after mixing from receiver 5 outputs.
As mentioned above, in the present embodiment, provide for notice to its frequency of different information of user and volume different warning tone all.Thus, can improve the definition of warning tone, the user can understand the various warning tones of hearing aids.Like this, the user can confirm the information notified rightly.
(execution mode 2)
At first, utilize Fig. 4 that the structure of the hearing aids of present embodiment is described.Fig. 4 represents the functional block diagram of hearing aids.
The hearing aids of present embodiment has as shown in Figure 4: microphone 1, AD converter 2, hearing aid handling part 19, DA converter section 4, receiver 5.1 pair of ambient sound of microphone is picked up.AD converter 2 will be digital signal from the analog signal conversion of this microphone 1 output.19 pairs of digital signals from these AD converter section 2 outputs of hearing aid handling part are implemented hearing aid and are processed.The signal that DA converter section 4 will have been implemented this hearing aid processing is converted to analog signal.Around receiver 5 will export to after as audible signal from the analog signal of this DA transducer 4 outputs.
Have, the hearing aids of present embodiment has mixing section 6, control part 9 again.The input of mixing section 6 one is connected in the output of AD converter 2, and the output of self is connected in the input of hearing aid handling part 19, is arranged between AD converter 2 and the hearing aid handling part 19.Another input side in this mixing section 6 is inputted the warning tone signal that is generated by warning tone generating unit 7.Control part 9 generates and is used for mixing the mixing ratio signal of the output signal of AD converter 2 and warning tone generating unit 7 by mixing section 6, and is connected in the mixing ratio signal input terminal of mixing section 6.
In addition, following this point is different from the structure of above-mentioned execution mode 1 in the present embodiment, that is: the prime at hearing aid handling part 19 arranges mixing section 6, and the output signal of these 6 pairs of AD converter 2 of mixing section is mixed with the output signal of warning tone generating unit 7 and exported.
Particularly, if from control part 9 output mixing ratio signals, then the output signal of 6 pairs of AD converter 2 of mixing section is mixed with the output signal of warning tone generating unit 7 and is offered hearing aid handling part 19.Corresponding therewith, only the action of hearing aid handling part 19 structures is different.Like this, invest identical symbol for other structure and description thereof is omitted.
Next, utilize Fig. 5 that the structure of hearing aid handling part 19 is described.Fig. 5 represents the functional block diagram of hearing aid handling part 19.
Hearing aid handling part 19 has as shown in Figure 5: frequency analysis section 10, gain adjustment part 11, frequency synthesis section 12, energy calculating part 13, control portion of gain 20.10 pairs in frequency analysis section inputs to the digital signal of this hearing aid handling part 19 and carries out exporting as frequency information signal after the frequency analysis.Gain adjustment part 11 is adjusted from the gain of the frequency information signal of these frequency analysis section 10 outputs.Frequency synthesis section 12 will adjust 11 frequency information signal of having carried out the gain adjustment by gain and synthesize the time shaft signal.13 inputs of energy calculating part are calculated the energy value of the digital signal that inputs to frequency analysis section 10 from the frequency information signal of frequency analysis section 10 outputs from this frequency information signal.Control portion of gain 20 inputs determine the gain in the gain adjustment part 11 and export gain adjustment part 11 to based on this energy value from the energy value of these energy calculating part 13 outputs.
Have, this control portion of gain 20 has again: table memory 21, table selection portion 22, gain determination section 23.The a plurality of tables of table memory 21 storage are respectively: be used for to the ambient sound that microphone 1 picks up carry out the gain table that hearing aid processes, the warning tone signal that warning tone generating unit 7 is generated carries out the warning tone table that hearing aid is processed.Table selection portion 22 is read any one of a plurality of gain table and warning tone table from table memory 21 according to the admixture in the mixing section 6.Gain table or warning tone table that gain determination section 23 utilizes this table selection portion 22 to read are based on the gain from the energy value decision gain adjustment part 11 of energy calculating part 13 outputs.
Like this, in hearing aid handling part 19, different from above-mentioned execution mode 1 is the structure action of control portion of gain 20.Therefore, also description thereof is omitted to invest same-sign for the parts beyond this control portion of gain 20.
At first, a plurality of gain table of storage in table memory 21, these gain table are used for the gain that gain determination section 23 determines that gain adjustment part 11 is used.Same with above-mentioned execution mode 1 in the present embodiment, store 3 gain table A～C, 4 warning tone Table A～D.
Warning tone Table A～D correspondence is from the notification mode A～D of warning tone generating unit 7 outputs.These warning tones Table A～D and gain table A～C are same, and the external equipment by match device etc. generates in advance, and are stored in the table memory 21.These warning tones Table A～D, the generating algorithm in the equipment externally, identical with the action of warning tone processing department 8 in the above-mentioned execution mode 1.
That is to say, use the algorithm identical with the action of table converter section 15, offset values storage 16, notice gain determination section 17, generate warning tone Table A～D of corresponding notification mode A～D according to gain table A.
When gain determination section 23 is gain table A～C at table selection portion 22 selected tables, carry out the action identical with control portion of gain 14 in the above-mentioned execution mode 1.On the other hand, when table selection portion 22 selected tables are warning tone Table As～D, carry out with above-mentioned execution mode 1 in the notice gain determine the action that 17 run is identical.
That is to say, based on the energy value from 13 outputs of energy calculating part, select gain with reference to the warning tone table, and when using this gain by gain adjustment part 11, the amplitude limiting processing that gains makes from the volume of the signal of frequency synthesis section 12 outputs and is in the scope of regulation.Have again, have in the situation of hearing aids of volume, consider that this volume value selects gain.
By above-mentioned structure, when usually the user not being notified, the sound enforcement hearing aid that microphone 1 picks up is processed and exported from receiver 5.On the other hand, when the user is notified, the sound that replaces microphone 1 to pick up, the warning tone signal of selecting warning tone generating unit 7 to generate also inputs to hearing aid handling part 19, to granting in fact that hearing aid is processed the processing of same degree and from receiver 5 outputs.
As mentioned above, in the present embodiment, provide notice to its frequency of different information of user and volume different warning tone all.Thus, can improve the definition of warning tone.Like this, the user can understand the multiple warning tone of hearing aids, can confirm rightly the information of notifying.
In addition, in the present embodiment, although example the example that generates the warning tone table and store by external equipment in advance, same with above-mentioned execution mode 1, thus also can change gain table generation warning tone table in good time.In this situation, then can realize if in control portion of gain 20, be provided with the each several part of the warning tone processing department 8 shown in the above-mentioned execution mode 1.
(execution mode 3)
Next, utilize Fig. 1 and Fig. 6 that the structure of the hearing aids of the volume of adjusting warning tone according to the sound pressure level of ambient sound is described.
The hearing aids of present embodiment, be in the structured flowchart of hearing aids shown in Figure 1 below this point different with above-mentioned execution mode 1, that is: will also input to warning tone generating unit 7 from the digital signal that AD converter 2 is exported.
In warning tone generating unit 7, to same from the digital signal of AD converter 2 output and frequency analysis section 10 and energy calculating part 13 shown in Figure 2, carried out calculating the energy value of each frequency band after the frequency analysis.Then, the energy value that warning tone generating unit 7 is calculated whole frequency bands is obtained as the sound pressure level of ambient sound, determines the sound pressure level of the warning tone signal that generates according to the sound pressure level of obtaining.
Fig. 6 is the example of the variation of the sound pressure level that is illustrated in the ambient sound of being tried to achieve by warning tone generating unit 7 on the time shaft of the mode with chart.For example, in the situation that T1 need to produce warning tone constantly, take according to generating the warning tone signal from the volume of the selected notification mode of indication of control part 9 as the mode of LV1dBSPL.
In addition, in the situation that T2 need to produce warning tone constantly, the mode take the volume of notification mode as LV2dBSPL generates the warning tone signal.Then, export the warning tone signal that generates to warning tone processing department 8.
Like this, regulate and generate the volume of warning tone signal according to the sound pressure level of ambient sound, thereby can prevent from listening to the difficulty change along with the big or small warning tone of ambient sound.
In addition, in this embodiment, although be par with the acoustic pressure of ambient sound and the sound volume setting of notification mode, be not limited to this, can be according to user's hearing or hobby to change the volume of notification mode to the proportional mode of the sound pressure level of ambient sound.
Have again, also can adjust as follows, that is: the volume of notification mode is carried out amplitude limiting processing, make the warning tone signal of generation can be not excessive or too small.
In addition, the energy value of each frequency band in the digital signal that the transducer from AD 2 that also can replace in the present embodiment warning tone generating unit 7 to carry out is exported will export warning tone generating unit 7 to by the energy value that the energy calculating part that contains in the hearing aid handling part 3 calculates.
Have again, in the hearing aids shown in Figure 4 too, can export the digital signal from AD converter 2 outputs to warning tone generating unit 7, by the warning tone signal of warning tone generating unit 7 generations with the corresponding volume of sound pressure level of ambient sound, export the warning tone signal that generates to mixing section 6.Also can prevent from this situation causing the difficulty of listening to of warning tone to change along with the size variation of ambient sound.
(execution mode 4)
Next, utilize Fig. 1 and Fig. 7 that the frequency according to ambient sound is determined that the hearing aids of the frequency of warning tone describes.
The hearing aids of present embodiment following this point in the structured flowchart of hearing aids shown in Figure 1 is different from above-mentioned execution mode 1, will also input to warning tone generating unit 7 from the digital signal of AD converter 2 outputs that is:.
In warning tone generating unit 7, with frequency analysis section 10 shown in Figure 2 and energy calculating part 13 similarly to after the digital signal of AD converter 2 outputs is carried out frequency analysis, thereby the energy value that calculates each frequency band is made frequency distribution.Then, from the frequency distribution of producing, detect and do not produce sound or as the less frequency band of its energy value of sound, generate the warning tone signal in the mode that enters this frequency band according to the frequency from the selected notification mode of indication of control part 9.
That is to say, when the frequency of selected notification mode and the frequency of ambient sound are not overlapping, directly generate the warning tone signal of the notification mode of selecting.On the other hand, when frequency overlap, make its not overlapping generation warning tone signal thereby the frequency of notification mode processed.Particularly, as the center, the mode of the frequency of the frequency minimum that distributes with the scope medium frequency that becomes in regulation is processed the frequency of notification mode with the frequency of selected notification mode.
Fig. 7 is that the mode with chart represents the example by the produced frequency distribution of warning tone generating unit 7.Among Fig. 7, the above digital signal of the sound pressure level of regulation is concentrated centered by 1kHz, and the frequency band more than the 2kHz is less.In this situation, when the frequency of initial selected notification mode is 1kHz, generate the warning tone signal that is processed as the above frequency band of 2kHz.Then, export the warning tone signal that generates to warning tone processing department 8.
Like this, decide the frequency of warning tone by the frequency according to ambient sound, easily catch thereby warning tone is not submerged in the frequency band of ambient sound.
In addition, add man-hour in the frequency to notification mode, frequency in the frequency range of regulation all be in the above situation of setting, i.e. the sound pressure level of all frequency bands all in the higher situation, can be same with above-mentioned execution mode 3, and according to the volume of the sound pressure level adjustment warning tone of ambient sound.
In addition, in the present embodiment, the energy value that can replace each frequency band from the digital signal of AD converter 2 outputs that warning tone generating unit 7 carries out, the energy value that will be calculated by the energy calculating part that contains in the hearing aid handling part 3 inputs to warning tone generating unit 7.
Have again, in hearing aids shown in Figure 4 too, can export the digital signal from AD converter 2 outputs to warning tone generating unit 7, generate the warning tone signal by warning tone generating unit 7 in the mode different from the frequency of ambient sound, and export the warning tone signal that generates to mixing section 6.In this situation, thereby not being submerged in the frequency band of ambient sound, warning tone easily catches.
(execution mode 5)
Next, utilize Fig. 1 and Fig. 8 that the generation hearing aids constantly of adjusting warning tone according to the acoustic pressure of ambient sound is described.
Hearing aids in the present embodiment following this point in the structured flowchart of hearing aids shown in Figure 1 is different from above-mentioned execution mode 1, will also input to warning tone generating unit 7 from the digital signal of AD converter 2 outputs that is:.
Warning tone generating unit 7 and frequency analysis section 10 shown in Figure 2 and energy calculating part 13 calculate the energy value of each frequency band similarly to after the digital signal of AD converter 2 outputs is carried out frequency analysis.Then, the energy value of 7 pairs of Whole frequency bands of warning tone generating unit carries out addition, tries to achieve as the sound pressure level of ambient sound, in the sound pressure level of the trying to achieve moment lower than prescribed level, generates the warning tone signal and also produces warning tone.
Fig. 8 is the example in variation and the generation moment of warning tone of the sound pressure level of the ambient sound of being tried to achieve by warning tone generating unit 7 in the time shaft expression in the mode of chart.T3 is that original warning tone produces constantly, and T4 is the moment of actual generation warning tone.
At first, if send the indication that generates the warning tone signal from control part 9, then confirm the sound pressure level (T3) of the ambient sound that calculates.Then, sound pressure level at this moment is in the situation of the level higher than LV3dBSPL, does not carry out the generation of warning tone signal.When not carrying out the generation of warning tone signal, continue to monitor the sound pressure level of ambient sound.So, being lower than sound pressure level TL1dBSPL and constantly carrying out the generation (T4) of warning tone signal, described sound pressure level TL1dBSPL is minimum and predefined as the impact that makes ambient sound.
In addition, during the sound pressure level of sound monitors around, thereby preferred additional period restriction makes the constantly problem such as delay too of its generation that warning tone does not occur.
Then, after the warning tone signal that will generate exports warning tone processing department 8 to and has carried out processing, in the moment of having inputted the warning tone signal after the processing, the output signal of exporting from hearing aid handling part 3 is mixed with this warning tone signal, and export DA transducer 4 in the mixing section 6.
Like this, the sound pressure level of sound is lower around moment produces warning tone, thereby sound becomes and quietly constantly produces warning tone around, can produce the warning tone that allows the user easily catch.
Have again, in warning tone generating unit 7, can replace whether the sound pressure level of ambient sound is that voice (voice) carry out the affirmation that warning tone generates the moment by ambient sound, thereby generate the warning tone signal in the moment that is not voice.The judgement of voice can be carried out cepstrum analysis (cepstrum) to the digital signal of exporting from AD converter 2, thereby judges according to the characteristic quantity that extracts.
Like this, sound is not moment of voice to carry out the generation of warning tone around, can and leave alone in user's the situation of dialogue and produce warning tone.
Have again, in the warning tone generating unit 7 when the moment that becomes time restriction produces warning tone, can with above-mentioned execution mode 3 similarly, adjust the volume of warning tone according to the sound pressure level of ambient sound, can similarly carry out frequency adjustment with the corresponding warning tone of frequency of ambient sound with above-mentioned execution mode 4 in addition.
In addition, in the present embodiment, can replace the energy value of each frequency band from the digital signal of AD converter 2 outputs that warning tone generating unit 7 carries out, will input to warning tone generating unit 7 by the energy value that the energy calculating part that contains in the hearing aid handling part 3 calculates.
In addition, in hearing aids shown in Figure 4, too, will export warning tone generating unit 7 to from the digital signal of AD converter 2 outputs, thereby determine to be got final product by the moment that warning tone generating unit 7 produces warning tone.In this situation, sound becomes and quietly constantly produces warning tone around, can produce the warning tone that allows the user easily catch.Have again, can in the situation of the dialogue of leaving the user alone, produce warning tone.
(execution mode 6)
At first, utilize Fig. 9 that the structure of hearing aids is described.
Switching part 30 and control part 31 are different from above-mentioned execution mode 1 in the present embodiment.That is to say, switching part 30 is replaced mixing section 6 and is arranged.Because control part 31 is different from control part 6 actions, therefore invest other symbol.Therefore other structural element omits explanation herein owing to identical with execution mode 1.
Switching part 30 has input part and 1 efferent more than at least 3.The 1st input part among the input part more than 3 connects the output of hearing aid handling part 3.Connect the output of the warning tone processing department 8 that warning tone signal that warning tone generating unit 7 is generated processes at the 2nd input part.Connect the output of control part 31 at the 3rd input part, one of them of the output of control part 31 selection hearing aid handling parts 3 or the output of warning tone processing department 8 also judges whether to export.Have, the efferent of switching part 30 is connected in DA transducer 4 again.
The control part 31 usual outputs of selecting hearing aid handling part 3 are controlled from the mode of the voice signal of microphone 1 output with output.On the other hand, in the situation that from warning tone generating unit 7 output notice sounds, control part 31 is selected the output of warning tone processing departments 8, thereby controls in the mode of output notice sound only.
According to said structure, usually when the user not being notified, the sound enforcement hearing aid that microphone 1 picks up is processed and exported from receiver 5.On the other hand, when the user is notified, change into and implemented the sound that this hearing aid is processed, and switch to the sound that warning tone generating unit 7 is generated and implemented to process the result that the processing of same degree obtains with hearing aid, export from receiver 5.
As mentioned above, in the present embodiment, the output of in switching part 30, switching the output signal of hearing aid handling part 3 or warning tone processing department 8 line output of going forward side by side.
Thus, in the moment of output notice sound, warning tone can be only heard purely, the definition of warning tone can be improved.Like this, the user can easily catch the multiple warning tone of hearing aids, thereby confirms rightly the information notify.
That is to say, because the mixing section 6 of containing in the above-mentioned execution mode is not necessary structure, therefore can determine in such a way the present invention in the present embodiment.
Hearing aids of the present invention has:
Microphone, it picks up ambient sound;
AD converter will be digital signal from the analog signal conversion of described microphone output;
The hearing aid handling part is processed implementing hearing aid from the digital signal of described AD converter output;
The DA transducer, its signal that will implement described hearing aid processing is converted to analog signal;
Receiver will be around it will export to as audible signal from the analog signal of described DA transducer output;
The warning tone generating unit, its condition according to the rules generates warning tone;
The warning tone processing department is processed the warning tone signal that is generated by described warning tone generating unit;
Switching part, input part and 1 efferent that it has more than 3 at least connect the output of described hearing aid handling part at the 1st input part, connect the output of described warning tone processing department at the 2nd input part, and the efferent of self is connected in described DA transducer; And
Control part, it is selected one of them of the output of described hearing aid handling part or described warning tone processing department and judges whether to export, and the output of self is connected in the 3rd input part of described switching part,
Described warning tone processing department has: the table converter section, and the gain table that its hearing aid with described hearing aid handling part uses in processing is changed and is exported in the mode that is used for the warning tone signal; Notice gain determination section is notified gain from the output signal decision of described table converter section accordingly with the warning tone signal; And multiplier, will be from the described notice gain application of described notice gain determination section output in the warning tone signal from the output of warning tone generating unit.
Have, hearing aids of the present invention has again:
Microphone, it picks up ambient sound;
AD converter, it will be digital signal from the analog signal conversion of described microphone output;
The hearing aid handling part is processed implementing hearing aid from the digital signal of described AD converter output;
The DA transducer, its signal that will implement described hearing aid processing is converted to analog signal;
Receiver will be around will exporting to as audible signal from the analog signal of described DA transducer output;
The warning tone generating unit, its condition according to the rules generates warning tone;
Switching part, input part and 1 efferent that it has more than 3 at least connect the output of described hearing aid handling part at the 1st input part, connect the output of described warning tone processing department at the 2nd input part, and the efferent of self is connected in described DA transducer; And
Control part, it is selected one of them of the output of described hearing aid handling part or described warning tone processing department and judges whether to export, and the output of self is connected in the 3rd input part of described switching part,
Described hearing aid handling part has:
Frequency analysis section, it is exported to the frequency analysis of the digital signal that inputs to described hearing aid handling part and as frequency information signal;
The gain adjustment part, it is adjusted from the gain of the frequency information signal of described frequency analysis section output;
Frequency synthesis section will carry out the frequency information signal that gain adjusts by described gain adjustment part and synthesize the time shaft signal;
Energy calculating part, input be from the described frequency information signal of described frequency analysis section output, inputs to the energy value of the digital signal of described frequency analysis section from this frequency analysis calculated signals; And
Control part, the described energy value that input is exported from described energy calculating part determines the gain in the described gain adjustment part and exports described gain adjustment part to based on this energy value,
Described control portion of gain has:
The table memory, it stores a plurality of tables, be respectively for the ambient sound that described microphone is picked up carry out the gain table that hearing aid processes, the warning tone signal that described warning tone generating unit is generated carries out the warning tone table that hearing aid is processed;
The table selection portion, it reads a plurality of described gain table and one of them of described warning tone table according to the admixture in the described mixing section from described table memory; And
The gain determination section, it uses selected described gain table or described warning tone table in the described table selection portion, determines gain the described gain adjustment part based on the described energy value from the output of described energy calculating part.
(utilizing on the industry possibility)
As the hearing aids among the present invention, regardless of user's characteristic, can both improve the definition of warning tone, in the sound equipment of sound to user's announcement information, be useful therefore.
Claims (11)
1. a hearing aids is characterized in that,
Have: microphone, it picks up ambient sound;
AD converter will be digital signal from the analog signal conversion of described microphone output;
The hearing aid handling part is processed implementing hearing aid from the digital signal of described AD converter output;
The DA transducer is converted to analog signal with the signal of having implemented described hearing aid processing;
Receiver will be around it will export to as audible signal from the analog signal of described DA transducer output;
The warning tone generating unit, it is condition generation warning tone signal according to the rules;
The warning tone processing department is processed the warning tone signal that is generated by described warning tone generating unit;
Mixing section, an one input is connected in the output of described hearing aid handling part, and another input is connected in the output of described warning tone processing department, and the output of self is connected in the input of described DA transducer, is arranged between described hearing aid handling part and the described DA transducer; And
Control part, it generates the mixing ratio signal, described mixing ratio signal is used for the output signal of described hearing aid handling part and described warning tone processing department being synthesized with the regulation mixing ratio by described mixing section, and described control part is connected in the mixing ratio signal input terminal of described mixing section
Described warning tone processing department has:
The table converter section, it extracts the gain corresponding to frequency band of the warning tone signal that generates with described warning tone generating unit, thus the gain table of use was converted to the warning tone table line output of going forward side by side during the hearing aid of described hearing aid handling part processed;
Notice gain determination section is notified gain according to the output signal decision of described table converter section accordingly with the warning tone signal; And
Multiplier will be from the described notice gain application of described notice gain determination section output in the warning tone signal from the output of warning tone generating unit.
2. hearing aids according to claim 1 is characterized in that,
Described warning tone processing department has offset values storage, stores for the side-play amount to the additional different characteristic of each warning tone signal;
Described notice gain determination section based on the described output signal of described table converter section and the described side-play amount of exporting from described offset values storage, determines and the corresponding described notice gain of described warning tone signal.
3. according to claim 1 or 2 described hearing aidss, it is characterized in that,
Described warning tone generating unit generates the muli-sounds that has changed the generation interval of frequency and sound as the warning tone signal.
4. a hearing aids is characterized in that,
Have: microphone, it picks up ambient sound;
AD converter, it will be digital signal from the analog signal conversion of described microphone output;
The hearing aid handling part is processed implementing hearing aid from the digital signal of described AD converter output;
The DA transducer, its signal that will implement described hearing aid processing is converted to analog signal;
Receiver will be around will exporting to as audible signal from the analog signal of described DA transducer output;
The warning tone generating unit, it is condition generation warning tone signal according to the rules;
Mixing section, an one input is connected in the output of described AD converter, input described warning tone signal at another input side, the output of self is connected in the input of described hearing aid handling part, and described mixing section is arranged between described AD converter and the described hearing aid handling part; And
Control part, it generates the mixing ratio signal, described mixing ratio signal is used for the output signal of described AD converter and described warning tone generating unit being synthesized with the regulation mixing ratio by described mixing section, and described control part is connected in the mixing ratio signal input terminal of described mixing section
Described hearing aid handling part has:
Frequency analysis section, its frequency to the digital signal that inputs to described hearing aid handling part is analyzed and is exported as frequency information signal;
The gain adjustment part, it is adjusted from the gain of the frequency information signal of described frequency analysis section output;
Frequency synthesis section will carry out the frequency information signal that gain adjusts by described gain adjustment part and synthesize the time shaft signal;
The energy calculating part is transfused to from the described frequency information signal of described frequency analysis section output, calculates the energy value of the digital signal that inputs to described frequency analysis section according to this frequency information signal; And
Control portion of gain is transfused to from the described energy value of described energy calculating part output, and determine gain in the described gain adjustment part based on this energy value, and export described gain adjustment part to,
Described control portion of gain has:
The table memory, it stores a plurality of tables, comprises respectively: be used for the ambient sound that described microphone picks up is carried out the gain table of hearing aid processing and the warning tone signal that described warning tone generating unit generates is carried out the warning tone table that hearing aid is processed;
The table selection portion, it reads one of them of a plurality of described gain table and described warning tone table according to the troubled water in the described mixing section from described table memory; And
The gain determination section, it uses described gain table or the described warning tone table of reading in described table selection portion, and the described energy value based on from described energy calculating part output determines the gain in the described gain adjustment part.
5. hearing aids according to claim 4 is characterized in that,
Muli-sounds or voice that described warning tone generating unit will change the generation interval of frequency and sound generate as the warning tone signal.
6. according to claim 1 or 4 described hearing aidss, it is characterized in that,
Described mixing section changes the mixing ratio of described 2 signals that input to mixing section when producing described warning tone, return to original mixing ratio when finishing the generation of described warning tone.
7. according to claim 1 or 4 described hearing aidss, it is characterized in that,
Described warning tone generating unit generates and warning tone signal from the corresponding volume of sound pressure level of the digital signal of described AD converter output.
8. according to claim 1 or 4 described hearing aidss, it is characterized in that,
Described warning tone generating unit determines the frequency of warning tone signal, makes its frequency from the digital signal of exporting from described AD converter different.
9. according to claim 1 or 4 described hearing aidss, it is characterized in that,
Described warning tone generating unit, according to the digital signal from described AD converter output, the less moment of the impact of sound generates the warning tone signal around, and the sound of giving notice.
10. hearing aids according to claim 9 is characterized in that,
The less moment of the impact of described ambient sound refers to from the low interval of sound pressure level of the digital signal of described AD converter output.
11. hearing aids according to claim 9 is characterized in that,
The less moment of the impact of described ambient sound refers to interval with respect to the non-voice between speech region, between described speech region based on from the digital signal detection of described AD converter output out.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
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| JP2009054547 | 2009-03-09 | ||
| JP2009-054547 | 2009-03-09 | ||
| JP2009177368A JP4440333B1 (en) | 2009-03-09 | 2009-07-30 | hearing aid |
| JP2009-177368 | 2009-07-30 | ||
| PCT/JP2010/000720 WO2010103724A1 (en) | 2009-03-09 | 2010-02-05 | Hearing aid |
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| CN101904183A CN101904183A (en) | 2010-12-01 |
| CN101904183B true CN101904183B (en) | 2013-05-01 |
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| JP (1) | JP4440333B1 (en) |
| CN (1) | CN101904183B (en) |
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| WO2012035594A1 (en) * | 2010-09-13 | 2012-03-22 | パイオニア株式会社 | Playback device, playback method, and playback program |
| KR102051545B1 (en) | 2012-12-13 | 2019-12-04 | 삼성전자주식회사 | Auditory device for considering external environment of user, and control method performed by auditory device |
| CN103096232A (en) * | 2013-02-27 | 2013-05-08 | 广州市天艺电子有限公司 | Frequency self-adaptation method and device used for hearing aid |
| JP2019129400A (en) * | 2018-01-24 | 2019-08-01 | 東芝テック株式会社 | Sound quality control device and program |
| JPWO2020217605A1 (en) * | 2019-04-23 | 2020-10-29 | ||
| DE102019210934A1 (en) * | 2019-07-24 | 2021-01-28 | Zf Friedrichshafen Ag | System to improve hearing for the hearing impaired |
| EP4258689A1 (en) * | 2022-04-07 | 2023-10-11 | Oticon A/s | A hearing aid comprising an adaptive notification unit |
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| US6310556B1 (en) * | 2000-02-14 | 2001-10-30 | Sonic Innovations, Inc. | Apparatus and method for detecting a low-battery power condition and generating a user perceptible warning |
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| JPS6211120Y2 (en) * | 1980-04-30 | 1987-03-16 | ||
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| JP2922951B2 (en) * | 1988-08-02 | 1999-07-26 | ロンドン バイオテクノロジー リミティド | Amplification assay for hydrolase enzyme |
| JPH0257700U (en) * | 1988-10-19 | 1990-04-25 | ||
| JPH0918997A (en) * | 1995-06-30 | 1997-01-17 | Hitachi Ltd | Voice processing unit |
| AU4278300A (en) * | 1999-04-26 | 2000-11-10 | Dspfactory Ltd. | Loudness normalization control for a digital hearing aid |
| US20040155770A1 (en) * | 2002-08-22 | 2004-08-12 | Nelson Carl V. | Audible alarm relay system |
| JP2006279409A (en) * | 2005-03-29 | 2006-10-12 | Rb Controls Co | Acoustic apparatus |
| DK1653773T3 (en) * | 2005-08-23 | 2010-10-04 | Phonak Ag | Method of operating a hearing aid and hearing aid |
| JP4124246B2 (en) * | 2006-06-30 | 2008-07-23 | ソニー株式会社 | Imaging apparatus, camera control unit, video camera system, and warning information transmission method |
| US8457335B2 (en) * | 2007-06-28 | 2013-06-04 | Panasonic Corporation | Environment adaptive type hearing aid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6310556B1 (en) * | 2000-02-14 | 2001-10-30 | Sonic Innovations, Inc. | Apparatus and method for detecting a low-battery power condition and generating a user perceptible warning |
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| Publication number | Publication date |
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| WO2010103724A1 (en) | 2010-09-16 |
| EP2259605A1 (en) | 2010-12-08 |
| EP2259605A4 (en) | 2011-04-06 |
| EP2259605A8 (en) | 2011-08-03 |
| JP2010239603A (en) | 2010-10-21 |
| EP2259605B1 (en) | 2012-05-09 |
| ATE557550T1 (en) | 2012-05-15 |
| CN101904183A (en) | 2010-12-01 |
| JP4440333B1 (en) | 2010-03-24 |
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