CN104581591A - Hearing instrument capable of cutting off microphone power supply - Google Patents
Hearing instrument capable of cutting off microphone power supply Download PDFInfo
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- CN104581591A CN104581591A CN201410566561.8A CN201410566561A CN104581591A CN 104581591 A CN104581591 A CN 104581591A CN 201410566561 A CN201410566561 A CN 201410566561A CN 104581591 A CN104581591 A CN 104581591A
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Abstract
The invention relates to a hearing instrument capable of cutting off the microphone power supply. The hearing instrument comprises a first microphone and a control and processing circuit. The control and processing circuit comprises a first audio frequency input channel for receiving the first microphone signal, a second audio frequency input channel for receiving the sound signal, a signal processor, which can receive and process the first microphone signal and sound signal according to hearing loss of a customer, a power supper for supplying power to the first microphone, a first controllable switch comprising a first switch control terminal, wherein the first controllable switch can selectively connect the first microphone power supply to the first microphone or cut off the first microphone power supply from the first microphone according to a first switch control signal; and a first output port which provides a first switch control signal to the first switch control terminal.
Description
Technical field
The present invention relates to a kind of hearing instrument used by user.
Hearing instrument comprises the first microphone, and for producing the first microphone signal in response to receiving sound, and the first microphone comprises positive power terminal and negative power source terminal.The control of hearing instrument and treatment circuit comprise the first audio input channel being coupled to the first microphone signal, and for receiving the second audio input channel of the second audio signal.To control and treatment circuit comprises and to receive for the hearing loss according to user and to process the signal processor of the first microphone signal and the second audio signal.The power supply of control and treatment circuit is configured to provide the first microphone supply voltage between the positive and negative power supply terminal of the first microphone.First gate-controlled switch comprises the first switch control terminal, and is configured to the first microphone supply voltage of optionally connecting according to the first switch controlling signal and disconnect between the positive and negative power supply terminal of the first microphone.First controllable output mouth of control and treatment circuit is configured to the first switch controlling signal to be supplied to the first switch control terminal.
Background technology
Hearing instrument or hearing aids comprise at least one microphone, for receiving the sound entered, such as speak and music.The sound entered is exaggerated according to one or more default program of listening to and process in the signal processor of hearing instrument, and program of listening to calculates according to the specific auditorily handicapped degree (being such as represented as audiogram) of user.Processed voice signal is sent to the duct of user by output amplifier via miniature loudspeaker or receiver, miniature loudspeaker or receiver can be accommodated in the shell of hearing instrument together with microphone, or separately in earplug.
Due to the fast development of digital integrated circuit technology and the algorithm development of Digital Signal Processing, modern hearing instrument provides day by day complicated signal processing function and user interface capabilities further.Therefore, modern hearing instrument typically comprises multiplely different listens to program, they can adopt different microphone signals as audio frequency input or so-called direct audio input source, and it is such as passed through RF antenna, infrared remote receiver or the magnetic antenna as telecoil.In addition, modern hearing instrument often comprises more than one microphone, such as 2,3 or 4 microphones, and they can side by side operate to transmit multiple microphone signal under certain condition.Multiple microphone signal can be used to provide dissimilar noise reduction and Wave beam forming function or algorithm.One in multiple microphone signal can be produced by ear canal microphone, and for inaccessible inhibit feature, such as, at United States Patent (USP) 8,520, disclosed in 875.The Selective type of signal processing function and quantity are typically to concrete to listen to program relevant, and program that what this was concrete listen to automatically is selected by the control of hearing instrument and treatment circuit or manually selected by the control button of hearing instrument user-operable via suitable user.Therefore, one group of function that concrete program of listening to often utilizes specific signal processing function or customizes for the concrete acoustic environment of user.First listens to program such as can comprise Wave beam forming function or algorithm, and customizes for the noisy acoustic environment in such as railway station or bar.Second listens to program can utilize single nondirectional microphone input signal, and is relatively quietly family or office's acoustic environment etc. and customize.
But this microphone can consume a certain amount of power to produce useful microphone signal according to the impact sound such as between about 20mW and 50mW when hearing aid microphone is operated.This power consumption is drawn through being coupled to the positive power terminal of microphone of the microphone supply voltage of hearing instrument and negative power source terminal.The energy decline of the usual appropriateness of the battery source of hearing instrument or unit is made from the electric current of microphone supply voltage absorption.The power consumption of hearing aid microphone is typically drawn by the preamplifier and other signal processing circuit that are contained in the sealed compartment of hearing aid microphone or the dissimilar of enclosure interior.Consider the limited quantity of the energy be stored in hearing instrument battery unit, expect the power consumption reducing hearing instrument circuit and parts as much as possible.
U.S.6,760,457B1 disclose a kind of hearing aids with the switch that magnetic activates, and hearing aids input is automatically switched to voice coil loudspeaker voice coil input from microphone input in response to the existence in magnetic field by it.Magnetic field can by telephone receiver magnet produce, thus make when hearing aid user pick up answer the call answerphone time, hearing instrument automatically switch to voice coil loudspeaker voice coil input.
Summary of the invention
First aspect relates to a kind of hearing instrument used by user, and hearing instrument comprises the first microphone, and for producing the first microphone signal in response to receiving sound, wherein the first microphone comprises positive power terminal and negative power source terminal.Hearing instrument comprises control and treatment circuit further, and this control and treatment circuit comprise the first audio input channel being coupled to the first microphone signal, and for receiving the second audio input channel of the second audio signal.The signal processor of control and treatment circuit is configured for the hearing loss according to user and receives and process the first microphone signal and the second audio signal.Power supply is configured between the positive power terminal and negative power source terminal of the first microphone, provide the first microphone supply voltage respectively.First gate-controlled switch comprises the first switch control terminal, and the first gate-controlled switch is configured to according to the first switch controlling signal and optionally connects and disconnect the first microphone supply voltage between the positive power terminal of the first microphone and negative power source terminal.First controllable output mouth of control and treatment circuit is configured to the first switch controlling signal to be supplied to the first switch control terminal.
The ability that the control of this hearing instrument and treatment circuit disconnect the first microphone supply voltage via the first gate-controlled switch makes it possible to, while hearing instrument keeps operation, substantially reduce or eliminate the power consumption of one or more inactive hearing instrument microphone.Hearing instrument such as can input and maintenance operation by reproducing the audio frequency transmitted by a direct audio input source discussed above.As mentioned above, some listen to program may not need all hearing instrument microphones to operate simultaneously, and in fact, some listen to the microphone that program even may not need single operation, the audio frequency that program of such as listening to obtains it from direct audio input source discussed above inputs.Another advantage of this hearing instrument is that the control of hearing instrument and treatment circuit can such as be listened to program according to what select and control connection and the disconnection of the microphone supply voltage of each hearing instrument microphone, thus makes to only have required microphone be powered and therefore operate listening in program of any selection.Because control and the selection of listen to program for the treatment of circuit automatically or desired by controlling in response to user's input, so can know and listen in selection the one or more audio input source used in program.Therefore, control and treatment circuit can identify and disconnect one or more inactive microphone.Further advantage is the microphone supply voltage controlling can be connected with treatment circuit in the signal processing algorithm of some types and disconnect each hearing instrument microphone, and these signal processing algorithms rely on the Land use models based on interval of some microphone signals.Therefore, at relevant microphones not by during time interval of using, the power supply of relevant microphones can be disconnected by control and treatment circuit.
Hearing instrument such as can receive, process and reproduce from remote audio source via the audio signal being coupled to the wireless of the second audio input channel or cable receiver and passing to user.In the case of the latter, therefore control and treatment circuit can be disconnected to the microphone power supply of the first microphone.According to the present embodiment, hearing instrument comprises wireless receiver further, this wireless receiver is for receiving wireless-modulated audio signal, and decoder, this decoder is coupled to wireless receiver for extracting wireless audio signal and described wireless audio signal being coupled to control and the second audio input channel for the treatment of circuit or the 3rd audio input channel.Wireless receiver can comprise the wireless transmission of type of suitable antenna for selecting, the antenna such as selected from a group { RF antenna, magnetic antenna, optical receiver }.RF antenna such as can be disposed for according to bluetooth standard or bluetooth low energy (Bluetooth LE) standard or according to US8, and 229,146 and receive wireless-modulated audio signal.Alternatively, such as, magnetic couplings when can may comprise traditional telecoil based on wherein magnetic antenna, and the communication of much lower frequency is provided.Optical receiver can comprise suitable LED-based optical sensor.
Remote audio source can comprise portable mobile wireless microphone, such as ReSound Unite
tMmini microphone, it is placed near the interested sound source of such as speaker, teacher, TV, wireless sound source or other type.Sound near portable mobile wireless microphone pickup sound source, and the audio signal modulation of correspondence is passed to the wireless receiver of hearing instrument via suitable communication link.Audio signal modulation such as can be encoded into number format according to standardized digital audio protocol.
Because the connection of the microphone supply voltage of the control of hearing instrument and processing circuit controls first microphone and disconnection, so when the selection signal processing function performed by signal processor or algorithm do not need microphone signal, to control and treatment circuit can disconnect the power supply of the first microphone via the first controllable output mouth identification.In one embodiment, at least one the process parameter for the treatment of the first microphone signal is used to the logic state of setting first controllable output mouth, and thus connects or disconnect the first microphone supply voltage.At least one process parameter such as can indicate based on the analysis of the noise characteristic of the first microphone signal and need nondirectional microphone signal.In response to this, therefore microphone supply voltage can be connected to the first microphone by control and treatment circuit.
In one embodiment, described hearing instrument comprises second microphone, for receiving sound and producing corresponding second microphone signal at described second audio input channel place.Described second microphone comprises positive power terminal and negative power source terminal.Described control and treatment circuit comprise microphone power supply terminal further, described microphone power supply terminal provides second microphone supply voltage to the positive power terminal of described second microphone and negative power source terminal, with the second gate-controlled switch, described second gate-controlled switch be configured to according to from be connected to second switch control terminal the first or second controllable output mouth second switch control signal and optionally connect and disconnect positive power terminal and the negative power source terminal of described second microphone supply voltage and second microphone.Therefore, in the present embodiment, second microphone signal coupling to the second audio input channel, replaces inputting via audio frequency that is wireless or cable receiver from remote audio source discussed above.It will be appreciated by those skilled in the art that further embodiment can comprise previously discussed from remote audio source via above-mentioned audio frequency input that is additional or the 3rd audio input channel.
In certain embodiments, the microphone signal from second microphone only may be needed during some time intervals, and therefore control and treatment circuit are configured to control second gate-controlled switch, optionally connect with the time utilization pattern according to second microphone and disconnect second microphone supply voltage.The Land use models of second microphone such as can be determined by concrete signal processing function, such as, in response to entering some predetermined audio characteristics of signals of microphone signal and the Wave beam forming function be activated with intermittent mode.In one embodiment, control and treatment circuit are configured to the time utilization pattern determining second microphone based on duct acoustic pressure.
There is the various signal processing function of respective process parameter or algorithm can be combined or the particular preset that bundlees to define hearing instrument listens to program, thus make each presetting listen to program select specific audio signal channels or one group of audio input channel together with the specific one group of signal processing function of the audio signal of the voice-grade channel being applied to selection.Therefore, to control and treatment circuit defaultly can be listened to program according to what select and be connected and disconnect the supply voltage of each of the first microphone and second microphone, thus only microphone in need is powered and operates listening in program of selection.Preset program of listening to such as automatically to be selected based on first and/or the frequency spectrum of second microphone signal or the analysis of time content by the control of hearing instrument and treatment circuit, or manually selected via to the control button controlled and treatment circuit produces the suitable user-operable of suitable control signal by hearing instrument user.In one embodiment, hearing instrument can comprise nondirectionally listens to program, and described nondirectional program of listening to utilizes single audio signal channels.In interchangeable or additional embodiment, hearing instrument can comprise directed listens to program, and the program of listening to of described orientation at least utilizes the first audio input channel and the second audio input channel.
At least the first audio input channel can comprise analog to digital converter, and it is that the digital signal processor (DSP) of signal processor produces digitized microphone signal.Those skilled in the art should understand that, first audio input channel can comprise additional signal conditioning circuit, such as before analog to digital converter or the microphone preamplifier integrated with it and/or various frequency selective filter to carry out high pass, low pass or bandpass filtering to microphone signal.Second audio input channel similarly can comprise analog to digital converter and various additional signal conditioning circuit, and these signal conditioning circuits to control and the character of the audio signal source of the second audio input channel for the treatment of circuit, such as second microphone or remote audio source adapts with being coupled to.
Although each in the first gate-controlled switch and the second gate-controlled switch can be integrated in principle and to control and on treatment circuit or be provided as the independent component of control and treatment circuit outside, but preferably, in the first gate-controlled switch and the second gate-controlled switch at least one and be preferably both integrated on control and treatment circuit.If the latter is available, then the first gate-controlled switch such as can be arranged to and connect with the positive power terminal of the first microphone and negative power source terminal, and the second gate-controlled switch is arranged to and connects with the positive power terminal of second microphone and negative power source terminal.It is favourable that the miniature dimensions of typical case's hearing instrument and the small size of correspondence provided by the electron carrier parts of hearing instrument can make the first gate-controlled switch and the second gate-controlled switch all integrate with control and treatment circuit usually.Electron carrier parts can comprise single or multiple lift printed circuit board (PCB) or ceramic substrate.Control and treatment circuit are preferably provided in such as manufactured in the submicron CMOS course of processing single semiconductor die or substrate.In replacement form, in the first gate-controlled switch and the second gate-controlled switch at least one and both can be disposed in alternatively and control and treatment circuit outside, connect with the positive power terminal of the first microphone or second microphone and negative power source terminal.In an embodiment, gate-controlled switch can be integrated on microphone.
Each in first gate-controlled switch and the second gate-controlled switch can comprise the semiconductor switch of such as transistor switch, all switch mosfets in this way, because the latter is simple especially for being integrated on the semiconductor die based on sub-micron digital CMOS of retentive control and treatment circuit or substrate.If the first and/or second gate-controlled switch is installed in control and treatment circuit is outside, then the first and/or second gate-controlled switch can comprise miniature electromechanical relay or MEMS relay etc.First gate-controlled switch of such disposed outside and/or the respective switch control terminal of the second gate-controlled switch can be electrically connected to the input port of the accessible outside of control and treatment circuit via the suitable wiring of hearing instrument.Electric wire can comprise be formed on electron carrier parts discussed above or in power path or wire.
First microphone can comprise voice entry in the housing or shell being arranged in hearing instrument or port, to pick up sound from the such as public or space of individual or the external environment condition in room.The housing of hearing instrument can comprise any known shell type, such as after ear (BTE), in ear (ITE), in duct (ITC), completely in duct (CIC) etc.In an embodiment, the second microphone of hearing instrument can have the second voice entry be arranged in housing or shell, to pick up sound from the external environment condition of hearing instrument.In this embodiment, the first voice entry and the second voice entry preferably closely separate on housing, such as, separate to have to be less than 30mm, distance such as between 5 and 20mm.What this of voice entry or port closely separated be furnished with is beneficial to and obtains from the first microphone and second microphone signal or to obtain directional microphone signal previously discussed.Therefore according to this embodiment, selected only the first microphone signal to be used as audio frequency input, such as to form non-directional signal if control and treatment circuit can be configured to the first default program of listening to, then the positive power terminal of the first microphone and negative power source terminal are connected to the first microphone supply voltage, and the positive power terminal of second microphone and negative power source terminal are disconnected from second microphone supply voltage.Selected to combine the first and second microphone signals in signal processor, such as to form directional microphone signal via Wave beam forming function if second presets program of listening to, then the positive power terminal of the first microphone and negative power source terminal can be connected to the first microphone supply voltage by control and treatment circuit further, and the positive power terminal of second microphone and negative power source terminal are connected to second microphone supply voltage.
In another advantageous embodiment of this hearing instrument with at least two microphones, in the housing that the voice entry of second microphone is disposed in hearing instrument or shell, with on the ear being assembled in user at hearing instrument or in ear time from the duct pickup sound of user.The ability of the acoustic pressure measured and process in user's duct may be helpful for multiple reason, such as, in order to provide the obturation in hearing instrument suppress or eliminate while user's speech.
As mentioned above, treatment circuit can be included in signal processor and utilize multiple the presetting of different disposal parameter to listen to program, to process at least the first microphone signal.To control and treatment circuit can be configured to listen to program according to the default of selection and be connected via the first controllable output mouth and disconnect at least the first microphone supply voltage.It should be appreciated by those skilled in the art that and to control and treatment circuit can be configured to listen to program according to selection default and be connected and disconnect the respective microphone supply voltage of other microphone any via other controllable output mouth.Different process parameters can be determined according to the hearing loss of user at audiologist office by hearing aid assembly system between erecting stage.Different process parameters can be written into the hearing instrument relevant to assembling process, and is loaded onto in the non-volatile data storage space of hearing instrument.Different process parameters can be stored in non-volatile data storage space, and these parameters during hearing instrument operation can be read by signal processor.
Signal processor preferably includes software programmable microprocessor, such as DSP kernel.Signal processing function discussed above and each listening in program can be included in one group of executable program instructions that software programmable microprocessor kernel performs.In replacement form, signal processor can comprise the hardwire DSP that assembly that is continuous by the numeral suitably formed and combinational logic circuit realizes.
The power supply of control and treatment circuit can comprise DC power supply.In an embodiment, DC power supply can comprise various types of power circuit, such as linear voltage regulator or switching mode DC-DC power inverter, and they are all coupled to the battery supply of control and treatment circuit.The battery supply of hearing instrument by traditional 1.2V zinc-air cell or can be provided by one or more rechargeable battery cells.DC power supply can be configured to the microphone supply voltage of the DC level transmitted between 0.9V and 1.1V, and this is suitable for typical hearing instrument microphone.In addition, DC voltage level can be suitable for the power supply requirement of the hearing aid microphone of any particular type.As mentioned above, each hearing instrument microphone can draw the power between 20mW and 50mW from microphone supply voltage when being connected to microphone supply voltage.If need the microphone supply voltage higher than the DC voltage transmitted by battery supply, then DC power supply can comprise Boost switching-mode DC-DC power inverter, if the microphone supply voltage needed is lower than the DC voltage of battery supply, then DC power supply can comprise Buck-type switched-mode DC-DC power inverter.
For the hearing instrument used by user, comprising: the first microphone, for producing the first microphone signal in response to receiving sound, described first microphone comprises positive power terminal and negative power source terminal, and control and treatment circuit, comprise: the first audio input channel being configured to reception first microphone signal, be disposed for the second audio input channel of received audio signal, receive for the hearing loss according to user and process the signal processor of the first microphone signal and audio signal, be configured to the power supply that the first microphone supply voltage is provided to the first microphone, comprise the first gate-controlled switch of the first switch control terminal, described first gate-controlled switch is configured to according to the first switch controlling signal and optionally the first microphone supply voltage is connected to the first microphone and is disconnected from the first microphone by the first microphone supply voltage, and be configured to the first output port the first switch controlling signal being supplied to the first switch control terminal.
Alternatively, described hearing instrument comprises further: second microphone, and for receiving sound and producing corresponding second microphone signal, described second microphone is coupled to the second audio input channel, and comprises positive power terminal and negative power source terminal; Wherein said control and treatment circuit comprise further: microphone power supply terminal, described microphone power supply terminal provides second microphone supply voltage to second microphone, with the second gate-controlled switch, described second gate-controlled switch comprises second switch control terminal, described second gate-controlled switch is configured to according to the second switch control signal from the first output port or the second output port that are connected to second switch control terminal, and optionally second microphone supply voltage is connected to second microphone, and second microphone supply voltage is disconnected from second microphone.
Alternatively, described second microphone comprises the second voice entry in the housing or shell being arranged in described hearing instrument, with on the ear being assembled in user at hearing instrument or in ear time from the duct pickup sound of user.
Alternatively, described control and treatment circuit are configured to control second gate-controlled switch further and are optionally connected with the time utilization pattern according to second microphone and disconnect second microphone supply voltage.
Alternatively, described control and treatment circuit are configured to the time utilization pattern determining second microphone based on duct acoustic pressure.
Alternatively, described control and treatment circuit comprise multiple presetting and listen to program, and wherein said control and treatment circuit are configured for and optionally perform following operation: selected to input so that the first microphone signal instead of second microphone signal are used as audio frequency if preset first of listening in program, then the positive power terminal of the first microphone and negative power source terminal are connected to the first microphone supply voltage, and the positive power terminal of second microphone and negative power source terminal are disconnected from second microphone supply voltage; If preset second of listening in program to be selected to combine the first and second microphone signals in signal processor, then the positive power terminal of the first microphone and negative power source terminal are connected to the first microphone supply voltage, and the positive power terminal of second microphone and negative power source terminal are connected to second microphone supply voltage.
Alternatively, at least one in the first gate-controlled switch and the second gate-controlled switch is arranged to connects with the positive power terminal of the first microphone or second microphone and negative power source terminal.
Alternatively, described hearing instrument comprises further: wireless receiver, and described wireless receiver is for receiving wireless-modulated audio signal; And decoder, described decoder is coupled to wireless receiver for extracting wireless audio signal and wireless audio signal being coupled to control and the second audio input channel for the treatment of circuit or the 3rd audio input channel.
Alternatively, described wireless-modulated audio signal comprises digitally coded audio signal.
Alternatively, described wireless receiver comprises RF antenna, magnetic antenna or optical receiver.
Alternatively, described hearing instrument comprises further: second microphone; With the second gate-controlled switch; Wherein said second gate-controlled switch is positioned at and controls and treatment circuit outside, and is arranged to and connects with the positive power terminal of the first microphone or second microphone and negative power source terminal.
Alternatively, described first microphone comprises the voice entry in the housing or shell being arranged in hearing instrument, to pick up sound from external environment condition.
Alternatively, described control and treatment circuit are included in signal processor and utilize multiple the presetting of different disposal parameter to listen to program, to process at least the first microphone signal; And wherein said control and treatment circuit are configured to preset according to one that selects listen to program and be connected via the first output port and disconnect at least the first microphone supply voltage.
Alternatively, described first audio input channel comprises microphone preamplifier and analog to digital converter, produces digitized microphone signal for the digital signal processor (DSP) for signal processor.
Alternatively, described signal processor comprises the micro-processor kernel of software programmable.
Alternatively, described power supply comprises linear voltage regulator or switching mode DC-DC power inverter.
Alternatively, described first gate-controlled switch comprises MOSFET.
Alternatively, described signal processor is configured to the logic state setting the first output port based at least one the process parameter for the treatment of the first microphone signal.
By read that detailed description below should be understood that other with further aspect and feature.
Accompanying drawing explanation
Illustrate design and the effect of each feature described here, wherein identical key element is represented by common Reference numeral.In order to be better familiar with how to obtain state above and other advantage and object, should more specific description be provided, and show in the accompanying drawings.These accompanying drawings only describe exemplary feature, and are not therefore considered to the scope limiting claim.
By reference to the accompanying drawings embodiment will be described in more detail, wherein:
Fig. 1 is the simplified schematic block diagram of the hearing instrument according to embodiment, and this hearing instrument comprises the connection of control microphone power supply and the processor of disconnection; With
Fig. 2 is the simplified schematic block diagram of the multi-microphone hearing instrument according to embodiment, and this hearing instrument comprises the independent connection of control microphone power supply and the processor of disconnection; With
Fig. 3 is the simplified schematic block diagram of the multi-microphone hearing instrument according to embodiment, and this hearing instrument comprises the independent connection of control microphone power supply and the processor of disconnection.
Embodiment
Each feature is described with reference to the drawings hereinafter.It should be noted that, accompanying drawing is not drawn to scale, and the key element with same structure or function is represented by same Reference numeral in whole accompanying drawing.It should be noted that, accompanying drawing is only for helping Expressive Features.They are not considered to the exhaustive explanation of the present invention for required protection or limit the scope of the present invention for required protection.In addition, illustrated feature need not have shown all aspects or advantage.The aspect described in conjunction with specific features or advantage need not be limited to this feature, also can be used in any further feature even without diagram.
Fig. 1 is the simplified schematic block diagram of the hearing instrument 100 according to embodiment, and this hearing instrument 100 comprises the connection of control microphone power supply and the processor of disconnection.Hearing instrument can comprise the hearing aid hous type of any type, such as after ear (BTE), in duct (ITC), completely in duct (CIC) etc.In order to simplify, be omitted for generation of the output amplifier of duct acoustic pressure and micro-receiver/loud speaker, but output port or the entrance of processor can be coupled to communicatedly in an embodiment.Hearing instrument 100 comprises by the microphone power supply voltage terminal V being coupled to control and treatment circuit 101
mIC1the microphone M that powers of positive power terminal
1.Microphone M
1negative power source terminal with control equally with the earth terminal for the treatment of circuit 101 to be coupled to ground current potential.Therefore, microphone M
1power supply flow through positive and negative power supply terminal, and for powering to the microphone preamplifier of the housing or enclosure that are arranged in microphone.Microphone M
1positive and negative power supply terminal can be formed as on the housing of microphone or shell the addressable pad of pair of outer.Microphone M
1comprise microphone signal terminal or pad further, it is connected to the output of microphone preamplifier and provides the first microphone signal 199 produced corresponding to the sound entered.It will be appreciated by those skilled in the art that the microphone for some types, voice-frequency signal terminal and positive power terminal are provided as single shared microphone pad or terminal.
Control and treatment circuit 101 comprise the first audio input channel 103, and its audio input terminal 196 via control and treatment circuit 101 is coupled to the first microphone signal 199.First audio input channel 103 comprises microphone preamplifier or buffer A1, its by being exaggerated/buffering and the first analog to digital converter Σ Δ 1 may be passed to by filtered microphone signal, thus produce digitized or digital microphone signal 198.First analog to digital converter can comprise the transducer of Σ Δ type as shown in the figure or the analog to digital converter of other applicable type any, such as high-speed converters, successive-approximation converter etc.Digital microphone signal 198 is provided to the first input channel 197 of the digital signal processor 111 (DSP) of control and treatment circuit 101.DSP111 can comprise software programmable DSP kernel, and under the control of one group of executable program command or code, one or more signal processing function can be applied to digital microphone signal 198.One or more signal processing function processes digital microphone signal preferably suitable for the hearing loss of the user according to hearing instrument.Therefore, each process parameter of one or more signal processing function can have been worked as user and determined between aforementioned hearing aids erecting stage at audiologist office, and is loaded onto in the addressable non-volatile data storage space 195 of DSP111.
DSP111 is by the master clock signal clock control provided by clock generator 109, and this clock generator 109 can have the clock frequency between 1 and 20MHz.Clock generator 109 can additionally for the first and second analog to digital converter Σ Δs 1, Σ Δ 2 provide synchronizing clock signals.Control and treatment circuit 101 also can comprise the second audio input channel 105, for receiving second so-called direct audio signal via preamplifier A2 and the second analog to digital converter Σ Δ 2.Second audio input channel 105 is included in wireless receiver before the second preamplifier A2 and decoder 104 further.Wireless receiver and decoder 104 are coupled to RF antenna 106, for receiving through wireless RF audio signal modulation V wherein
rF1.It should be appreciated by those skilled in the art that wireless receiver and decoder 104 can according to bluetooth standard or bluetooth LE standards or according to US8,229,146, utilize bluetooth standard or bluetooth LE standard or according to US8, the Digital Audio Transmission agreement of 229,146 and configuration file and operate.Wireless receiver and decoder 104 can from RF audio signal modulation V
rF1middle extraction wireless audio signal, and input the latter being supplied in an analog format the second preamplifier A2.Subsequently, the output signal of preamplifier A2 is digitized and is provided to second digital channel of DSP111 in the second analog to digital converter Σ Δ 2, processes further for the hearing loss according to user as mentioned earlier.In replacement form, wireless receiver and decoder 104 can be configured to directly extracted by the RF audio signal modulation entered or be decoded as digital signals format, and digital audio and video signals are supplied to the suitable digital input channel of DSP111.The audio signal path relevant to this directly digital decode of RF audio signal modulation is schematically indicated by dotted line or line 113.
Control and treatment circuit 101 comprise voltage or the power supply of such as DC power supply, DC-DC, and it is configured at microphone M
1positive and negative power supply terminal between microphone supply voltage V previously discussed is provided
mIC1.DC power supply, DC-DC can comprise relatively simple linear regulator, this linear regulator provides the DC microphone supply voltage of low noise and ripple-free, this DC microphone supply voltage has the voltage levvl of 100-300mV, and it is less than the power supply terminal V being supplied to control and treatment circuit 101 by suitable battery supply, such as 1.2V zinc-air cell unit
bATcell voltage.Filtering or smmothing capacitor C
1can be used to suppress the ripple in DC microphone supply voltage and noise.Typical hearing aid microphone should draw the electric current between 20 and 50 μ A from the DC supply voltage of 1V voltage levvl.Controllable semiconductor switch SW
1be integrated on control and treatment circuit 101, and via the microphone power supply voltage terminal V of circuit 101
mIC1with earth terminal and microphone M
1positive and negative power supply terminal series coupled.It should be appreciated by those skilled in the art that and such as depend on control and the semiconductor technology for the treatment of circuit 101 and the particular requirement of various application, controllable semiconductor switch SW
1dissimilar semiconductor switch can be comprised, such as bipolar transistor, CMOS transistor, JFET etc.Due to the small size of switch mosfet, high point resistance break and low on-resistance, in the present embodiment, controllable semiconductor switch SW
1mOSFET or MOSFET combination (such as, passing through gate coupling) can be comprised.Controllable semiconductor switch SW
1comprise switch controlling signal Φ
1the gate terminal be applied to or control terminal (not shown), this is used for switch controlling signal Φ
1optionally connect and disconnect microphone M
1the output voltage V of DC power supply
rEG.Switch controlling signal Φ
1logic high by SW
1under being placed on conduction state or conducting state, wherein there is the low resistance being such as less than 1k Ω.On the other hand, switch controlling signal Φ
1logic low by SW
1under being placed on non-conductive state or cut-off state, wherein there is the large resistance being such as greater than 1G Ω.Therefore, in the off state, SW
1resistance roughly correspond to open circuit, make the positive and negative power supply terminal of microphone effectively from microphone supply voltage V
rEGdisconnect, and the electric current drawn by microphone is reduced to and is roughly zero.It will be appreciated by those skilled in the art that the controllable semiconductor switch SW in replacement form
1can be inserted as and M
1negative power source terminal series connection, be such as disposed in control and treatment circuit 101 earth connection in instead of with microphone supply voltage V
rEGseries connection.
For providing the switch controlling signal Φ of logic low and high level
1actual voltage level will depend on the particular type of switch, such as PMOS or nmos pass transistor.Switch controlling signal Φ
1thered is provided by the controllable output mouth P1 of control and treatment circuit 101, this port is electrically coupled to SW via electric wire on sheet
1gate terminal.The logic level of controllable output mouth is controlled with treatment circuit 101, such as be controlled by signal processor 111 previously discussed or another suitable controller that can write to controllable output mouth P1.Controllable output mouth P1 such as can be mapped as the specific place value of the peripheral hardware control register (not shown) of control and treatment circuit 101.Those skilled in the art should understand that, if hearing instrument comprises multiple microphone, then peripheral hardware control register can comprise multiple place value, the specific controllable output mouth of each addressing wherein, and the corresponding switch controlling signal of gate-controlled switch is configured to the microphone supply voltage of each microphone optionally connecting and disconnect in multiple microphone.
As previously mentioned, DSP111 can comprise software programmable DSP kernel, and it is from M
1digital microphone signal one or more signal processing function is provided, thus process digital microphone signal 198 according to the hearing loss of user.These signal processing functions can comprise the different disposal parameter of function, as Image magnify, noise reduction, frequency response shaping etc., they be all integrated into first preset listen in program.DSP111 comprises at least one further and additional listens to program, and it does not utilize microphone signal, but uses the second direct audio signal provided by the second audio input channel 105 previously discussed.DSP111 can be configured to the control signal provided according to one of the control button by a user-operable previously discussed, presets listen to program and other available listening between program any thus switches first and second.This control signal such as can be routed to the readable input port (not shown) of suitable DSP of control and treatment circuit 101.When control signal indicating user wish from first preset program of listening to be switched to second preset listen to program time, DSP111 in response to this to read and the digital microphone signal processing the first input channel 103 switches to and reads and the Direct Digital audio signal processed from the second audio input channel 105.In addition, DSP111 continues through as described above to controlled port P
1write suitable logic state, and via SW
1by microphone supply voltage V
rEGdisconnect from microphone.If user presses the control button of user-operable again at time point after a while thus sends signal and wish to return first and preset and listen to program, then DSP111 continues through closed SW
1and by microphone supply voltage V
rEGreconnect to microphone, and read and process now again by digital microphone signal that the first audio input channel 103 is provided.
Fig. 2 is the simplified schematic block diagram of the multi-microphone hearing instrument 200 according to the second embodiment, and this hearing instrument 200 comprises the independent connection of control microphone power supply and the processor of disconnection.Feature identical with the first embodiment previously discussed is in the present embodiment provided with corresponding Reference numeral easily to compare.It should be appreciated by those skilled in the art that above to microphone M
1characteristic and to control and the general remark of characteristic of each circuit block for the treatment of circuit 101 can be applied to the microphone M of correspondence equally
1, M
2and M
3and the circuit block of the correspondence of control and treatment circuit 201.This multi-microphone hearing instrument 200 comprise via respective audio input channel 203,205,205a is coupled to three microphone M of DSP211
1, M
2and M
3, and do not comprise any direct audio input channel.But, it should be appreciated by those skilled in the art that other embodiment can comprise and the similar direct audio input channel discussed about the first embodiment in addition.In the present embodiment, as shown in the figure, identical DC power supply, DC-DC are via each microphone power supply voltage terminal V
mIC1, V
mIC2and V
mIC3and to all three microphone M
1, M
2and M
3microphone supply voltage is provided.Controllable semiconductor switch SW
1, SW
2and SW
3the DC supply voltage V provided by common DC power supply is provided
rEGwith three microphone M
1, M
2and M
3in each microphone each microphone supply voltage between.Thus, three microphone M
1, M
2and M
3in each microphone can via suitable gate terminal and the suitable switch controlling signal Φ provided via each controllable output mouth P1, P2 and P3 of DSP211
1, Φ
2and Φ
3and be connected to V individually
rEGor with V
rEGdisconnect.Controllable output mouth P1, P2 and P3 are electrically connected to controllable semiconductor switch SW
1, SW
2and SW
3each switch control terminal (not shown), and respectively by suitable switch controlling signal Φ
1, Φ
2and Φ
3be supplied to switch control terminal.It will be appreciated by those skilled in the art that in various embodiments, three microphone M
1, M
2and M
3many different structures and corresponding signal processing function be feasible.In one embodiment, microphone M
1and M
2the respective voice entry at the proximal location place in the housing or shell being arranged in hearing instrument 200 can be had, so that sound can both be picked up from the external environment condition of hearing instrument.On the other hand, microphone M
3the voice entry in the housing or shell being arranged in hearing instrument can be had, to pick up sound when hearing instrument 200 is placed in the duct of user from the duct of user.By this way, microphone M
3the duct acoustic pressure of record or pickup user, this is all useful for many reasons, such as, provide inaccessible via suitable signal processing function and suppress or eliminate.By microphone M
1and M
2each microphone signal transmitted specific can be listened to the directed or Wave beam forming function of all kinds in program by signal processor for the formation of one or more.Program of listening to below usually suppresses ambient noise for the user in noisy environments or surrounding environment and improves voice degree of knowing is useful.But, may when user is in quiet environment preferred first listens to program nondirectional microphone can be utilized to input, and suppress without any obturation.Therefore, listen in program first, the first microphone M
1positive and negative power supply terminal can via SW
1be connected to DC supply voltage V
rEG, with from microphone M
1transmit microphone signal thus by DSP211 process, do not use second and the 3rd microphone M simultaneously
2and M
3respective positive and negative power supply terminal can by DSP211 via controllable output mouth P2 and P3 and controllable semiconductor switch SW
2and SW
3from DC supply voltage V
rEGdisconnect.Therefore, when first listen to program be activated time, second and the 3rd microphone M
2and M
3power consumption be all eliminated.
Fig. 3 is the simplified schematic block diagram of the multi-microphone hearing instrument 300 according to the 3rd embodiment, and this hearing instrument 300 comprises the independent connection of control microphone power supply and the processor of disconnection.Feature identical with the second embodiment previously discussed is in the present embodiment provided with corresponding Reference numeral easily to compare.It should be appreciated by those skilled in the art that above to microphone M
1-M
3characteristic and to control and the general remark of characteristic of each circuit block for the treatment of circuit 201 can be applied to the microphone M of correspondence equally
1, M
2and M
3and the circuit block of the correspondence of control and treatment circuit 301.This multi-microphone hearing instrument 300 comprises three microphone M
1, M
2and M
3, and do not comprise any direct audio input channel.But, it should be appreciated by those skilled in the art that other embodiment can comprise and the similar direct audio input channel discussed about the first embodiment in addition.In the present embodiment, the first controllable switch S W
1be formed as the independent component of control and treatment circuit 301 outside.Second and the 3rd controllable switch S W
2and SW
3to control and on treatment circuit 301 with being integrated in about identical described by the second embodiment above, but also may be provided in independently outer member alternatively.It will be appreciated by those skilled in the art that the first controllable switch S W
1can semiconductor switch be comprised, such as, comprise one or more transistor, such as MOSFET, JFET, bipolar transistor, with the same controllable semiconductor switch SW be formed integrally as previously discussed
1, SW
2and SW
3(be namely formed in controllable semiconductor switch SW
1, SW
2and SW
3on) the same.But, the first controllable switch S W
1miniature electromechanical relay or the relay of other type can be comprised alternatively.
Switch controlling signal Φ
1via to control and the output port P1 of accessible outside for the treatment of circuit 301 and pad 308 are applied to the first controllable switch S W
1switch control terminal (not shown).Controllable output mouth P1 such as can be mapped to the specific I/O address in the I/O address space of control and treatment circuit 101.It should be appreciated by those skilled in the art that if necessary, the translation circuit of various level can be inserted in output port 308 and SW
1switch control terminal between, to provide the suitable voltage levvl of switch controlling signal.
It should be appreciated by those skilled in the art that illustrated independently controllable output mouth P1, P2 and P3 can be substituted by single output port in other embodiments, this single output port has controllable semiconductor switch SW
1, SW
2and SW
3code switch address.In this embodiment, suitable decode logic can be increased decode respectively from the code switch address provided via single output port and provide switch controlling signal Φ
1, Φ
2and Φ
3in each.
In the above-described embodiments, hearing instrument has been described to have signal processor.As used in this description, term " signal processor " is not limited to the processor of certain type, but one or more processor can be related to, such as FPGA processor, asic processor, general processor or can other type processor any of processing signals.And " signal processor " can use the combination of hardware, software or hardware and software and realize.In addition, " signal processor " can relate to a part for any integrated circuit or integrated circuit.
The present invention comprises the many aspects according to the project mentioned further below.
Project:
1. the hearing instrument for being used by user, described hearing instrument comprises:
First microphone, for producing the first microphone signal in response to receiving sound,
Described first microphone comprises positive power terminal and negative power source terminal;
Control and treatment circuit, comprising:
First audio input channel, described first audio input channel is coupled to described first microphone signal,
Second audio input channel, described first audio input channel is configured for reception second audio signal,
Signal processor, described signal processor is used for the hearing loss according to user and receives and process described first microphone signal and described second audio signal,
Power supply, described power supply is configured between the positive and negative power supply terminal of described first microphone, provide the first microphone supply voltage,
First gate-controlled switch, described first gate-controlled switch comprises the first switch control terminal, wherein said first gate-controlled switch is configured to according to the first switch controlling signal and optionally connects and disconnect the first microphone supply voltage between the positive and negative power supply terminal of described first microphone
First controllable output mouth, described first controllable output mouth is configured to described first switch controlling signal to be supplied to described first switch control terminal.
2. the hearing instrument according to project 1, comprises further:
Second microphone, for receiving sound and producing corresponding second microphone signal at described second audio input channel place,
Described second microphone comprises positive power terminal and negative power source terminal;
Described control and treatment circuit comprise further:
Microphone power supply terminal, described microphone power supply terminal provides second microphone supply voltage to the positive and negative power supply terminal of described second microphone,
Second gate-controlled switch, described second gate-controlled switch is configured to according to from the second switch control signal of the first or second controllable output mouth being connected to described second switch control terminal, and optionally connects and disconnect the positive and negative power supply terminal of described second microphone supply voltage and described second microphone.
3. the hearing instrument according to project 1 or 2, comprises further:
Wireless receiver, described wireless receiver for receiving wireless-modulated audio signal,
Decoder, described decoder is coupled to described wireless receiver for extracting wireless audio signal and described wireless audio signal being coupled to the second audio input channel or the 3rd audio input channel of described control and treatment circuit.
4. the hearing instrument according to project 3, wherein said wireless-modulated audio signal comprises digitally coded audio signal.
5. the hearing instrument according to project 4, wherein said wireless receiver comprises the antenna selected from a group { RF antenna, magnetic antenna, optical receiver }.
6. the hearing instrument according to any one in aforementioned project, at least one in wherein said first and second gate-controlled switches is integrated on described control and treatment circuit, and is arranged to and connects with the positive and negative power supply terminal of described first microphone or described second microphone.
7. the hearing instrument according to any one in aforementioned project, at least one in wherein said first and second gate-controlled switches is disposed in described control and treatment circuit outside, and connects with the positive and negative power supply terminal of described first microphone or described second microphone.
8. the hearing instrument according to any one in aforementioned project, wherein said first microphone comprises the voice entry in the housing or shell being arranged in described hearing instrument, to pick up sound from external environment condition.
9. the hearing instrument according to any one in project 2-8, wherein said second microphone comprises the voice entry in the housing or shell being arranged in described hearing instrument, thus when described hearing instrument is assembled in user's ear from the duct pickup sound of described user.
10. the hearing instrument according to any one in aforementioned project, wherein said control and treatment circuit are included in described signal processor and utilize multiple the presetting of different disposal parameter to listen to program, to process at least described first microphone signal; And
Described control and treatment circuit are configured to defaultly listen to program according to what select and be connected via described first controllable output mouth and disconnect at least described first microphone supply voltage.
11. hearing instruments according to project 10, wherein said control and treatment circuit are configured to:
Selected thus only described first microphone signal be used as audio frequency to input if first presets program of listening to, then the positive and negative power supply terminal of described first microphone is connected to described first microphone supply voltage, and the positive and negative power supply terminal of described second microphone is disconnected from described second microphone supply voltage;
If second presets and listens to program and selected thus combine described first and second microphone signals in described signal processor, such as to form directional microphone signal via Wave beam forming function, then the positive and negative power supply terminal of described first microphone is connected to described first microphone supply voltage, and the positive and negative power supply terminal of described second microphone is connected to described second microphone supply voltage.
12. hearing instruments according to any one in aforementioned project, wherein at least described first audio input signal channel comprises microphone preamplifier and analog to digital converter, produces digitized microphone signal for the digital signal processor (DSP) for described signal processor.
13. hearing instruments according to project 11, wherein said signal processor comprises the micro-processor kernel of software programmable, such as DSP kernel.
14. hearing instruments according to any one in aforementioned project, wherein said power supply comprises linear voltage regulator or switching mode DC-DC power inverter, such as booster converter, buck converter or the charge pump of the battery supply voltage being coupled to described control and treatment circuit.
15. hearing instruments according to any one in aforementioned project, each in wherein said first and second gate-controlled switches comprises semiconductor switch, such as MOSFET.
16. hearing instruments according to any one in aforementioned project, wherein said signal processor is configured to the logic state setting described first controllable output mouth based at least one the process parameter for the treatment of described first microphone signal.
17. hearing instruments according to any one in project 2-16, wherein said control and treatment circuit are configured to control described second gate-controlled switch further and are optionally connected with the time utilization pattern according to described second microphone and disconnect described second microphone supply voltage.
18. hearing instruments according to project 17, wherein said control and treatment circuit are configured to the time utilization pattern determining described second microphone based on duct acoustic pressure.
19. 1 kinds, for the hearing instrument used by user, comprising:
First microphone, for producing the first microphone signal in response to receiving sound, described first microphone comprises positive power terminal and negative power source terminal; With
Control and treatment circuit, comprising:
First audio input channel, described first audio input channel is configured to receive described first microphone signal,
Second audio input channel, described second audio input channel is configured for received audio signal,
Signal processor, described signal processor is used for the hearing loss according to user and receives and process described first microphone signal and described audio signal,
Power supply, described power supply is configured to provide the first microphone supply voltage to described first microphone,
First gate-controlled switch, described first gate-controlled switch comprises the first switch control terminal, described first gate-controlled switch is configured to according to the first switch controlling signal and optionally described first microphone supply voltage is connected to described first microphone, disconnect from described first microphone with by described first microphone supply voltage, and
First output port, described first output port is configured to described first switch controlling signal to be supplied to described first switch control terminal.
20. hearing instruments according to project 19, comprise further:
Second microphone, for receiving sound and producing corresponding second microphone signal, described second microphone is coupled to described second audio input channel, and comprises positive power terminal and negative power source terminal;
Wherein said control and treatment circuit comprise further:
Microphone power supply terminal, described microphone power supply terminal provides second microphone supply voltage to described second microphone, and
Second gate-controlled switch, described second gate-controlled switch comprises second switch control terminal, described second gate-controlled switch is configured to according to the second switch control signal from the first output port or the second output port that are connected to described second switch control terminal, and optionally described second microphone supply voltage is connected to described second microphone, and described second microphone supply voltage is disconnected from described second microphone.
21. hearing instruments according to project 20, wherein said second microphone comprises the voice entry in the housing or shell being arranged in described hearing instrument, thus described hearing instrument to be assembled on user's ear or in ear time from the duct pickup sound of described user.
22. hearing instruments according to project 20, wherein said control and treatment circuit are configured to control described second gate-controlled switch further and are optionally connected with the time utilization pattern according to described second microphone and disconnect described second microphone supply voltage.
23. hearing instruments according to project 22, wherein said control and treatment circuit are configured to the time utilization pattern determining described second microphone based on duct acoustic pressure.
24. hearing instruments according to project 20, wherein said control and treatment circuit comprise multiple presetting and listen to program, and wherein said control and treatment circuit are configured for and optionally perform following operation:
If described first of listening in program of presetting is selected to input so that described first microphone signal instead of described second microphone signal are used as audio frequency, then the positive and negative power supply terminal of described first microphone is connected to described first microphone supply voltage, and the positive and negative power supply terminal of described second microphone is disconnected from described second microphone supply voltage;
Preset second of listening in program if described and selected in described signal processor, combine described first and second microphone signals, then the positive and negative power supply terminal of described first microphone is connected to described first microphone supply voltage, and the positive and negative power supply terminal of described second microphone is connected to described second microphone supply voltage.
25. hearing instruments according to project 20, at least one in wherein said first and second gate-controlled switches is arranged to connects with the positive and negative power supply terminal of described first microphone or described second microphone.
26. hearing instruments according to project 19, comprise further:
Wireless receiver, described wireless receiver is for receiving wireless-modulated audio signal; And
Decoder, described decoder is coupled to described wireless receiver for extracting wireless audio signal and described wireless audio signal being coupled to the second audio input channel or the 3rd audio input channel of described control and treatment circuit.
27. hearing instruments according to project 26, wherein said wireless-modulated audio signal comprises digitally coded audio signal.
28. hearing instruments according to project 26, wherein said wireless receiver comprises RF antenna, magnetic antenna or optical receiver.
29. hearing instruments according to project 19, comprise further:
Second microphone; With
Second gate-controlled switch;
It is outside that wherein said second gate-controlled switch is positioned at described control and treatment circuit, and be arranged to and connect with the positive and negative power supply terminal of described first microphone or described second microphone.
30. hearing instruments according to project 19, wherein said first microphone comprises the voice entry in the housing or shell being arranged in described hearing instrument, to pick up sound from external environment condition.
31. hearing instruments according to project 19, wherein said control and treatment circuit are included in described signal processor and utilize multiple the presetting of different disposal parameter to listen to program, to process at least described first microphone signal; And
Wherein said control and treatment circuit are configured to preset according to one that selects listen to program and be connected via described first output port and disconnect at least described first microphone supply voltage.
32. hearing instruments according to project 19, wherein said first audio input channel comprises microphone preamplifier and analog to digital converter, produces digitized microphone signal for the digital signal processor (DSP) for described signal processor.
33. hearing instruments according to project 32, wherein said signal processor comprises the micro-processor kernel of software programmable.
34. hearing instruments according to project 19, wherein said power supply comprises linear voltage regulator or switching mode DC-DC power inverter.
35. hearing instruments according to project 19, wherein said first gate-controlled switch comprises MOSFET.
36. hearing instruments according to project 19, wherein said signal processor is configured to the logic state setting described first output port based at least one the process parameter for the treatment of described first microphone signal.
Although show and describe specific features; but should be appreciated that; they do not think to limit the present invention for required protection, and those skilled in the art should be understood that and can carry out variations and modifications and the spirit and scope that can not deviate from the present invention for required protection.Therefore specification and accompanying drawing are regarded as schematic instead of restrictive meaning.The present invention for required protection intention covers all replacement forms, amendment and equivalent.
Claims (10)
1. the hearing instrument for being used by user, comprising:
First microphone, described first microphone is used for producing the first microphone signal in response to receiving sound, and described first microphone comprises positive power terminal and negative power source terminal; With
Control and treatment circuit, comprising:
First audio input channel, described first audio input channel is configured to receive described first microphone signal,
Second audio input channel, described second audio input channel is arranged to received audio signal,
Signal processor, described signal processor is used for the hearing loss according to described user and receives and process described first microphone signal and described audio signal,
Power supply, described power supply is configured to provide the first microphone supply voltage to described first microphone,
First gate-controlled switch, described first gate-controlled switch comprises the first switch control terminal, described first gate-controlled switch is configured to according to the first switch controlling signal and optionally described first microphone supply voltage is connected to described first microphone, disconnect from described first microphone with by described first microphone supply voltage, and
First output port, described first output port is configured to described first switch controlling signal to be supplied to described first switch control terminal.
2. hearing instrument according to claim 1, comprises further:
Second microphone, described second microphone is for receiving sound and producing corresponding second microphone signal, and described second microphone is coupled to described second audio input channel, and comprises positive power terminal and negative power source terminal;
Wherein, described control and treatment circuit comprise further:
Microphone power supply terminal, described microphone power supply terminal provides second microphone supply voltage to described second microphone, and
Second gate-controlled switch, described second gate-controlled switch comprises second switch control terminal, described second gate-controlled switch is configured to according to the second switch control signal from described first output port or the second output port that are connected to described second switch control terminal, and optionally described second microphone supply voltage is connected to described second microphone, and described second microphone supply voltage is disconnected from described second microphone.
3. hearing instrument according to claim 2, wherein, described second microphone comprises the voice entry in the housing or shell being arranged in described hearing instrument, picks up sound for time on the ear that described hearing instrument is assembled in described user or in ear from the duct of described user.
4. hearing instrument according to claim 2, wherein, described control and treatment circuit be configured to further control described second gate-controlled switch be optionally connected with the time utilization pattern according to described second microphone and disconnect described second microphone supply voltage.
5. hearing instrument according to claim 4, wherein, described control and treatment circuit are configured to the time utilization pattern determining described second microphone based on duct acoustic pressure.
6. hearing instrument according to claim 2, wherein, described control and treatment circuit comprise multiple presetting and listen to program, and wherein, described control and treatment circuit are arranged to optionally:
If described first of listening in program of presetting is selected to input so that described first microphone signal instead of described second microphone signal are used as audio frequency, then the positive power terminal of described first microphone and negative power source terminal are connected to described first microphone supply voltage, and the positive power terminal of described second microphone and negative power source terminal are disconnected from described second microphone supply voltage;
Preset second of listening in program if described and selected in described signal processor, combine described first microphone signal and second microphone signal, then the positive power terminal of described first microphone and negative power source terminal are connected to described first microphone supply voltage, and the positive power terminal of described second microphone and negative power source terminal are connected to described second microphone supply voltage.
7. hearing instrument according to claim 1, comprises further:
Wireless receiver, described wireless receiver is for receiving wireless-modulated audio signal; And
Decoder, described decoder is coupled to described wireless receiver for extracting wireless audio signal and described wireless audio signal being coupled to described second audio input channel or the 3rd audio input channel of described control and treatment circuit.
8. hearing instrument according to claim 1, comprises further:
Second microphone; With
Second gate-controlled switch;
Wherein, described second gate-controlled switch is outside at described control and treatment circuit, and is arranged to and connects with the described positive power terminal of described first microphone or described second microphone and negative power source terminal.
9. hearing instrument according to claim 1, wherein, described control and treatment circuit are included in described signal processor and utilize multiple the presetting of different disposal parameter to listen to program, to process at least described first microphone signal; And
Wherein, described control and treatment circuit be configured to according to described preset listen in program selected by one and be connected via described first output port and disconnect at least described first microphone supply voltage.
10. hearing instrument according to claim 1, wherein, described signal processor is configured to the logic state setting described first output port based at least one the process parameter for the treatment of described first microphone signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910106117.0A CN110012405B (en) | 2013-10-22 | 2014-10-22 | Hearing instrument with interruptible microphone power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA201370609 | 2013-10-22 | ||
| DKPA201370609 | 2013-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910106117.0A Division CN110012405B (en) | 2013-10-22 | 2014-10-22 | Hearing instrument with interruptible microphone power supply |
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| Publication Number | Publication Date |
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| CN104581591A true CN104581591A (en) | 2015-04-29 |
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| CN201910106117.0A Active CN110012405B (en) | 2013-10-22 | 2014-10-22 | Hearing instrument with interruptible microphone power supply |
| CN201410566561.8A Pending CN104581591A (en) | 2013-10-22 | 2014-10-22 | Hearing instrument capable of cutting off microphone power supply |
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| CN106658303A (en) * | 2016-12-01 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
| CN106658287A (en) * | 2016-11-11 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
| CN110677772A (en) * | 2018-07-03 | 2020-01-10 | 群光电子股份有限公司 | Sound receiving device and method for generating noise signal thereof |
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| DK3396833T3 (en) * | 2017-04-28 | 2019-11-18 | Gn Hearing As | Hearing aid comprising SWITCHED CAPACITOR-DC-DC CONVERTERS WITH LOW ELECTROMAGNETIC EMISSION |
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| CN106658303A (en) * | 2016-12-01 | 2017-05-10 | 北京卓锐微技术有限公司 | Microphone system and amplifying circuit |
| CN110677772A (en) * | 2018-07-03 | 2020-01-10 | 群光电子股份有限公司 | Sound receiving device and method for generating noise signal thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110012405B (en) | 2021-08-17 |
| CN110012405A (en) | 2019-07-12 |
| JP2015097385A (en) | 2015-05-21 |
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