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KR100303853B1 - Automatic fitting method of digital hearing aid - Google Patents

Automatic fitting method of digital hearing aid Download PDF

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Publication number
KR100303853B1
KR100303853B1 KR1019990021347A KR19990021347A KR100303853B1 KR 100303853 B1 KR100303853 B1 KR 100303853B1 KR 1019990021347 A KR1019990021347 A KR 1019990021347A KR 19990021347 A KR19990021347 A KR 19990021347A KR 100303853 B1 KR100303853 B1 KR 100303853B1
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frequency band
loss
low frequency
auditory
value
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KR20010001863A (en
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이희영
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/50Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/70Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/35Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

본 발명은 디지털 보청기의 자동피팅방법에 관한 것으로, 고/저주파대역에서의 청감손실값에 따라 최적의 청감이득을 얻을 수 있는 보청기의 고/저주파압신기의 가변저항값 및 밴드스프리트 필터의 크로스오버주파수 조절용 가변저항값 설정하여 기록한 뒤, 임의의 청감손실자의 주파수별 청감손실값을 검출하여, 고주파대역과 저주파대역의 청감손실량이 같을 경우에는 고/저주파대역의 가장큰 청감손실값에 해당하는 저항값으로 고/저주파압신기의 가변저항을 조정하고 크로스오버주파수 조절용 가변저항값은 그 가변범위의 중간값으로 하고, 고주파대역이 저주파대역에 비하여 청감손실량이 클 경우에는 고주파대역청감손실최대점과 저주파대역청감손실최소점을 기준으로 하여 고/저주파압신기의 가변저항을 조정함과 아울러 저주파대역최저점을 기준으로 크로스오버주파수 조절용 가변저항을 조정하고, 저주파대역이 고주파대역에 비하여 청감손실이 클 경우에는 저주파대역청감손실최대점과 고주파대역청감손실최저점을 기준으로 하여 고/저주파압신기의 가변저항을 조정함과 아울러 고주파대역청감손실최저점을 기준으로 크로스오버주파수 조절용 가변저항을 조정함으로써, 청감손실자가 최적의 청감이득을 얻도록 하는 데 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatic fitting of a digital hearing aid, and more particularly, to a variable hearing aid having a variable resistance value of a high / low frequency oscillator of a hearing aid which can obtain an optimal auditory sense gain in accordance with a hearing loss value in a high / low frequency band, Frequency resistance loss value is detected by detecting and setting a variable resistance value for adjusting the frequency and then detecting the loss value of each hearing loss of the desired hearing loss. If the hearing loss of the high frequency band and the low frequency band are the same, the resistance corresponding to the largest hearing loss value in the high / And the variable resistance value for controlling the crossover frequency is set to an intermediate value of the variable range. When the high frequency band is larger than the low frequency band and the auditory loss is large, the high frequency band auditory loss maximum point Low frequency band Adjustable variable resistor of the high / low frequency compressor based on minimum loss point, And the variable resistance for controlling the crossover frequency is adjusted based on the frequency of the high frequency band. When the low frequency band is larger than the high frequency band and the auditory loss is large, the variable resistance of the high / And adjusting the variable resistor for adjusting the crossover frequency based on the lowest point of the high frequency band auditory loss, so that the auditory loss can be optimized.

Description

디지탈 보청기의 자동 피팅방법{AUTOMATIC FITTING METHOD OF DIGITAL HEARING AID}TECHNICAL FIELD [0001] The present invention relates to an automatic fitting method for a digital hearing aid,

본 발명은 디지탈 보청기의 피팅방법에 관한 것으로, 특히 국내 사용자의 청감손실에 맞도록 디지탈 보청기를 자동으로 피팅시킴으로써, 보청기 사용상의 만족도를 향상시킴과 아울러 보청기 피팅이 편리하도록 하는 디지탈 보청기의 자동 피팅방법에 관한 것이다.The present invention relates to a digital hearing aid fitting method, and more particularly, to a digital hearing aid automatic fitting method which improves the satisfaction of use of a hearing aid by automatically fitting a digital hearing aid to meet the hearing loss of domestic users, .

일반적인 디지탈 보청기의 구성을 하기에서 도면을 참조하여 살펴본다.Hereinafter, a configuration of a general digital hearing aid will be described with reference to the drawings.

도 1은 종래의 디지탈 보청기의 구성을 나타내는 블록도로써, 상기한 종래의 디지탈 보청기는 음을 취득하여 전기신호로 변환하는 마이크(10)와, 입력되는 동작 제어 신호에 의하여 동작이 제어되어 상기 마이크(10)로부터 출력되는 음성신호를 기설정된 압축비율(Compression Rate)로 압축하는 전압축기(12)와, 상기전압축기(12)로부터 출력되는 신호를 입력되는 동작 제어 신호에 의하여 고주파대역과 저주파대역으로 이분하는 밴드 스프리트 필터(Band split filter ; 14)와, 입력되는 동작제어 신호에 따라 상기 밴드 스프리트 필터(14)를 통과한 고주파대역신호와 저주파대역신호를 각각 소정 비율로 압축 및 신장하는 복수개의 압신기(16)(17)와, 상기 복수개의 압신기(16)(17)로부터 출력되는 신호를 합성하여 하나의 신호로 출력하는 합산기(18)와, 상기 합산기(18)로부터 출력되는 신호를 입력되는 동작 제어 신호에 따라 소정 비율로 증폭하는 증폭부(20)와, 이를 출력하는 스피커(22) 및, 상기 다수개의 디바이스들의 동작을 제어하여 보청기 사용자의 청각손실을 보상하는 제어부(30)로 구성된다.FIG. 1 is a block diagram showing a configuration of a conventional digital hearing aid. FIG. 1 is a block diagram illustrating a configuration of a conventional digital hearing aid. The conventional digital hearing aid described above includes a microphone 10 for acquiring sound and converting the sound into an electric signal, (12) for compressing the audio signal output from the compressor (10) at a predetermined compression ratio, and a control unit (12) for controlling the high frequency band and the low frequency band A band split filter 14 for dividing the high frequency band signal and the low frequency band signal that have passed through the band split filter 14 according to an input operation control signal, A multiplexer 18 for combining the signals output from the plurality of compressing devices 16 and 17 and outputting the combined signals as one signal; An amplifier (20) for amplifying a signal output from the amplifier (20) at a predetermined ratio according to an input operation control signal, a speaker (22) for outputting the amplified signal, and a controller And a control unit 30.

한편, 상기한 구성에서 제어부(30)는 사용자의 선택에 따라 저항값이 설정되어 밴드 스프리트 필터(14)의 크로스오버주파수(Crossover Frequency ; 이하CF)를 조정하는 가변저항(R14)과, 사용자의 선택에 따라 저항값이 설정되어 고주파압신기(16)의 압축률을 제어하는 가변저항(R16)과, 사용자의 선택에 따라 저항값이 설정되어 저주파압신기(17)의 압축률을 제어하는 가변저항(R17)과, 사용자의 선택에 따라 가변되는 볼륨컨트롤저항(Rvc)과, 최대출력을 얻도록 하는 최대출력가변저항(Rmpo)과, 사용자의 선택에 따라 저항값이 설정되어 조용한 상태에서 최대이득을 맞출 수 있도록 하는 트레스홀드저항(Rth)과, 상기 전압축기(12)의 출력신호와 트레스홀드저항값을 기준으로 하여 전압축기(12)의 동작을 제어하는 제어기(32)로 구성되며, 상기 제어부(30)를 구성하는 다수개의 가변저항은 보청기를 사용하고자 하는 사용자의 청감능력에 따라 별도의 피팅시스템에 의하여 기 설정되는데, 상기한 바와 같은 제어부(30)의 피팅방법은 외국의 기술을 그대로 도입한 것이기 때문에, 국내사용자들에게는 부적절한 문제점이 있었으며, 이에 따라 이후 보청기의 고장시에 수리의 문제점이 있었다.In the above configuration, the control unit 30 includes a variable resistor R14 for adjusting a crossover frequency (CF) of the band-split filter 14 by setting a resistance value according to a user's selection, A variable resistor R16 for setting the resistance value according to the selection and controlling the compression ratio of the high frequency compressor 16 and a variable resistor R16 for setting the resistance value according to the user's selection and controlling the compression ratio of the low frequency oscillator 17 And a maximum output variable resistor Rmpo for obtaining a maximum output and a maximum gain in a quiet state in which a resistance value is set according to a user's selection, And a controller 32 for controlling the operation of the compressor 12 on the basis of the output signal of the compressor 12 and the resistance value of the compressor 12, (30) The variable resistor of the controller 30 is previously set by a separate fitting system according to the auditory ability of the user who wants to use the hearing aid. Since the fitting method of the controller 30 as described above introduces foreign technology as it is, There has been a problem in repairing the hearing aid in case of failure of the hearing aid.

상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은 국내 사용자의 청감손실에 맞도록 디지탈 보청기를 자동으로 피팅시킴으로써, 보청기 사용상의 만족도를 향상시킴과 아울러 보청기 피팅이 편리하도록 하는 디지탈 보청기의 자동 피팅방법을 제공하는 데 있다.It is an object of the present invention to overcome the above-mentioned problems, and an object of the present invention is to provide a digital hearing aid which automatically fitting a digital hearing aid to meet the hearing loss of domestic users, thereby improving the satisfaction of hearing aid use, Method.

도 1은 종래의 디지탈 보청기의 구성을 나타내는 블록도1 is a block diagram showing a configuration of a conventional digital hearing aid

도 2는 일반적인 디지탈 보청기 피팅시스템을 나타내는 블록도2 is a block diagram illustrating a typical digital hearing aid fitting system;

도 3은 본 발명에 따른 디지탈 보청기의 피팅방법을 나타내는 순서도3 is a flowchart showing a fitting method of a digital hearing aid according to the present invention

상기한 목적을 달성하기 위한 본 발명의 실시 예를 하기에서 도면을 참조하여 보다 상세하게 살펴본다.BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

우선, 도 2는 일반적인 보청기 피팅시스템을 나타내는 블록도로써, 상기 보청기 피팅시스템은 각종동작모드를 선택하도록함과 아울러 측정치를 입력할 수 있도록 하는 입력수단(42)과, 보청기(40)를 구성하는 각종 가변저항과 전기적으로 접속되어 입력되는 동작제어신호에 따라 상기 다수개의 가변저항값을 가변시키는 제어단자(44)와, 시스템의 각종 동작제어신호 및 프로그램이 기록된 메모리(46)와, 입력되는 동작제어신호에 의하여 상기 입력수단(42)으로부터 출력되는 신호를 사용자가 볼 수 있도록 표시하는 표시수단(48)과, 상기 입력수단(42)으로부터 출력되는 신호를 처리하여 제어단자(44)와 표시수단(48)으로 해당 동작제어신호를 출력하는 제어부(50)로 구성되는데, 이와 같이 구성된 피팅시스템을 사용한 본 발명에 따른보청기 피팅방법을 하기에서 도 3을 참조하여 보다 상세하게 살펴본다.FIG. 2 is a block diagram illustrating a conventional hearing aid fitting system. The hearing aid fitting system includes input means 42 for selecting various operation modes and for inputting measured values, A control terminal 44 for varying the plurality of variable resistance values in accordance with input operation control signals electrically connected to various variable resistors, a memory 46 in which various operation control signals and programs of the system are recorded, A display unit 48 for displaying a signal output from the input unit 42 by the operation control signal so that the user can view the signal; And a control unit 50 for outputting a corresponding operation control signal to the means 48. The hearing aid fitting method according to the present invention using the fitting system thus configured will be described below. Reference to Figure 3 looks at in greater detail.

우선, 고주파영역과 저주파영역에서의 청감손실값에 따라 공지된 청감손실보상공식으로 산출되는 이상적인 목표값을 기준으로 보청기를 구성하는 IC의 특성인 이득값이 상기 목표값에 가장 잘 매칭되도록 보청기를 구성하는 각종 가변저항값 즉, 고/저주파압신기의 압축률 조정용 가변저항값, 밴드스프리트필터의 크로스오버주파수 조절용 가변저항값)을 기 설정하여 소정의 메모리에 기록한다(S101).First, based on the ideal target value calculated by the known hearing loss compensation formula according to the auditory loss value in the high-frequency range and the low-frequency range, the hearing aid is set so that the gain value, which is the characteristic of the IC constituting the hearing aid, (Variable resistance value for adjusting the compression ratio of the high / low frequency oscillator, variable resistance value for controlling the crossover frequency of the band splitting filter) are set in advance and recorded in a predetermined memory (S101).

이 과정에서 연산시간 및 메모리공간을 감소시키기 위하여 가변저항값을 소정간격으로 나누어, 나누어진 각 영역에서 소정값을 추출하여, 추출된 값을 소정의 변수와 1:1대응시키되, 추출된 값들이 거의 유사한 간격을 유지하도록 함과 아울러 이값에 의한 보청기의 이득값과 목표값이 가장 잘 매칭되도록 간격을 미소한 크기만큼 가감한다. 그리고, 고/저주파대역 각각의 청감손실값(dB단위)에 따라서 청감손실이 최대로 보상되도록 상기 청감손실값과 상기 변수를 소정의 공식에 따라 대응시킨다.In order to reduce the computation time and the memory space in this process, a variable resistance value is divided by a predetermined interval, a predetermined value is extracted in each divided region, and the extracted value is made to correspond one by one with a predetermined variable, So that the distance between the hearing aid and the hearing aid can be matched with the target value by a small amount. Then, the auditory loss value and the variable are associated with each other according to a predetermined formula so that the auditory loss is maximally compensated according to the auditory loss value (in dB) of each of the high and low frequency bands.

상기한 스텝 S101이 종료되면, 임의의 측정자는 임의의 청감손실자의 청감손실값을 측정하여 그 결과를 입력수단을 사용하여 입력(S102)하게 되는데, 이 과정에서 표시수단에는 각 주파수대역별 손실값을 데시벨단위로 표시한 그래프인 오디오그램과 청감손실자의 각종정보를 입력하도록 하는 입력창을 표시하여 사용자가 입력하고 있는 정보를 시각적으로 확인할 수 있도록 하며, 이때 청감손실값은 측정하고자 하는 전주파수범위에서 샘플된 임의의 갯수의 주파수에서만 측정하고 다른 주파수에서는 상기 측정값을 기준으로하여 청감손실값을 자동으로 설정하여 오디오그램상에 연속선으로 표시한다.When the step S101 is completed, an arbitrary measurer measures the auditory loss value of an auditory loss and inputs the result using the input means (S102). In this process, the display means stores the loss value for each frequency band An input window for inputting various kinds of information of the audiogram and the auditory loss represented by the decibel unit is displayed so that the information inputted by the user can be visually confirmed. At this time, The audible loss value is automatically set on the basis of the measured value at other frequencies and is displayed as a continuous line on the audio gram.

상기한 바와 같이 사용자의 청감능력측정이 완료(S102)되면, 제어부는 고주파대역(1KHz-8KHz)과 저주파대역(125Hz-1KHz)에서 청감손실최고점(ML:저주파대역첨감손실최고점, MH;고주파대역청감손실최고점)과 청감손실최저점(NL;저주파대역청감손실최저점, NH;고주파대역청감손실최저점)을 검출한 뒤(S103), 고주파대역 청감손실량(이하AH라함)과 저주파대역의 청감손실량(이하AL이라함)을 비교(S104)한다.When the auditory ability measurement of the user is completed (S102), the control unit sets the maximum auditory loss (ML: low frequency band maximum loss point, MH: high frequency band) at a high frequency band (1 KHz-8 KHz) and a low frequency band (Hereinafter referred to as AH) of the high frequency band and auditory loss amount (hereinafter referred to as " AH ") of the low frequency band are detected AL) (S104).

상기한 비교 과정(S104)에서 AL과 AH가 같을 경우에 제어부는 고/저주파대역에서 청감손실이 가장큰지점의 값(MH,ML)을 기준으로하여 메모리로부터 상기 청감손실을 최대한 보상할 수 있는 고/저주파압신기의 압축률을 조정하는 가변저항값을 독출하고 CF조절용 가변저항값은 그 가변범위의 중간값을 독출하여 제어단자로 그에 해당하는 신호를 출력함으로써, 보청기가 사용하고자 하는 청감손실자의 청력에 맞게 조절되도록 한다(S105).If AL and AH are equal to each other in the comparison process (S104), the controller can compensate the auditory loss as much as possible from the memory based on the values (MH, ML) at the points where the auditory loss is greatest in the high / The variable resistance value for adjusting the compression ratio of the high / low frequency compressing device is read, and the variable resistance value for CF control reads the intermediate value of the variable range and outputs the corresponding signal to the control terminal, So as to be adjusted according to hearing (S105).

한편, 상기한 비교과정(S104)에서 AH가 AL보다 클 경우에는 고주파대역 청감손실최대점(MH)과 저주파대역 청감손실최저점(NL)을 찾아 이에 해당하는 고/저주파압신기의 압축률 조정저항값을 찾고, 저주파대역청감손실최저점(NL)을 시작으로 영역의 끝점까지 조사하여 CF가 임의의 트레스홀드값 이상이 되는 CF조정용 가변저항값을 찾아서 제어단자로 출력하여 보청기를 피팅한다(S106).If AH is greater than AL, the high frequency band auditory loss maximum point (MH) and the low frequency band auditory loss minimum point (NL) are found in the comparison process (S104) and the compression ratio adjustment resistance value of the corresponding high / (NL) to the end of the region starting from the lowest frequency of the low frequency band loss (NL), finds a variable resistor value for CF adjustment whose CF exceeds a certain threshold value, and outputs it to the control terminal to fit the hearing aid (S106).

그리고, 상기한 비교과정(S104)에서 AL이 AH보다 클 경우에는 저주파대역청감손실최대점(ML)과 고주파대역청감손실최저점(NH)을 찾아 이에 해당하는 고/저주파압신기의 압축률 조정저항값을 찾고, 고주파대역청감손실최저점(NH)을 시작으로영역의 끝점까지 조사하여 CF가 임의의 문턱치 이상이 되는 CF조정용 가변저항값을 찾아서 제어단자로 출력하여 보청기를 피팅한다(S107).If AL is greater than AH in the comparison process (S104), the low frequency band auditory loss maximum point (ML) and the high frequency band auditory loss lowest point (NH) are found and the compression ratio adjustment resistance value of the corresponding high / (NH) of the high frequency band starting from the lowest frequency (NH) of the high frequency band to the end of the region, and outputs the CF variable resistor value to the control terminal where CF is above a certain threshold value to fit the hearing aid (S107).

이와 같이 자동피팅이 종료되면, 보청기 사용환경 및 보청기 사용자의 기호에 맞게 상기 자동피팅과정에서 조절된 다수의 저항값을 수동으로 조절된 값의 전후로 재조정함과 아울러, 상기 자동피팅과정에서 조절되지 않은 다른 저항값들을 수동으로 조절하는 핸드피팅을 수행한다(S108).When the automatic fitting is completed, the plurality of resistance values adjusted in the automatic fitting process are readjusted to the front and rear of the manually adjusted value in accordance with the hearing environment environment and the preference of the hearing aid user, A hand fitting for manually adjusting other resistance values is performed (S108).

따라서, 보청기는 이를 사용하고자 하는 청감손실자의 청감상태에 최적으로 조절되어 청감손실자가 보청기를 사용할 경우 최적의 청감을 얻을 수 있게 되는 것이다.Therefore, the hearing aid can be optimally adjusted to the hearing state of the hearing loss user who wants to use the hearing aid, so that the hearing aid can obtain optimum audibility when the hearing aid uses the hearing aid.

상기한 본 발명에 따른 보청기 피팅방법에 의하면, 국내 청감손실자의 청감손실값에 맞게 보청기를 용이하고 간편하게 피팅할 수 있게 되는 효과가 있으며, 고장발생시에도 고장수리가 용이하게 되는 효과가 있다.According to the hearing aid fitting method of the present invention, the hearing aid can be easily and conveniently fitted to the hearing loss value of the domestic hearing loss user, and it is easy to repair the trouble even in the event of a failure.

Claims (1)

고/저주파압신기의 압축률을 조절하는 가변저항과 밴드스프리트 필터의 크로스오버주파수를 조절하는 가변저항 및 조용한 상태에서 최대이득을 얻을 수 있도록 하는 트레스홀드가변저항을 포함하는 보청기의 각종 가변저항과 전기적으로 접속되어 입력되는 동작 제어 신호에 따라 상기 보청기를 구성하는 각종 가변저항값을 조절하는 제어단자를 포함하는 디지털 보청기의 피팅시스템을 이용한 피팅방법에 있어서,Variable resistors to adjust the compression ratio of the high / low frequency compressors, variable resistors to control the crossover frequency of the band-split filter, and various adjustable resistors and electrical resistors of the hearing aids including the treshold variable resistor to obtain maximum gain in a quiet state And a control terminal for controlling various variable resistance values constituting the hearing aid according to an input operation control signal, the fitting method using a fitting system of a digital hearing aid, 고/저주파대역 각각의 청감손실값에 따라 최적의 청감이득을 얻을 수 있는 보청기의 고/저주파압신기의 가변저항값과 밴드스프리트 필터의 크로스오버주파수 조정용 가변저항값을 설정하여 기록하는 제 1 과정과;A first step of setting and recording a variable resistance value of a high / low frequency amplifier of a hearing aid and a variable resistance value for adjusting a crossover frequency of a band splitting filter which can obtain optimum auditory gain according to auditory loss values of respective high / low frequency bands and; 임의의 청감손실자의 주파수별 청감손실값을 검출하는 제 2 과정과;A second step of detecting a perceived auditory loss value of an arbitrary auditory loss person; 상기 제 2 과정에서 입력된 신호를 기준으로 하여 고주파대역(1KHz-8KHz)과 저주파대역(125Hz-1KHz)에서 청감손실최고점과 청감손실최저점을 각각 검출하는 제 3 과정과;A third step of detecting the highest auditory loss point and the lowest auditory loss point in the high frequency band (1 KHz-8 KHz) and the low frequency band (125 Hz-1 KHz), respectively, based on the signal input in the second step; 상기 제 2 과정에서 입력된 신호를 기준으로 하여 고주파대역과 저주파대역의 청감손실량을 비교하는 제 4 과정과;A fourth step of comparing auditory loss amounts of the high frequency band and the low frequency band based on the signal inputted in the second step; 상기 제 4 과정에서 고주파대역과 저주파대역의 청감손실량이 같을 경우에는 제 3 과정에서 검출된 고/저주파대역 각각에서 청감손실이 가장 큰지점의 값을 기준으로하여 상기 제 1 과정에서 기록된 청감손실을 최대한 보상할 수 있는 고/저주파압신기의 압축률 조정용 가변저항값을 독출하고 크로스오버주파수 조정용 가변저항값은 가변범위의 중간값을 독출하여 제어단자로 출력하는 제 5 과정과;If the amount of auditory loss in the high frequency band and the low frequency band is the same in the fourth step, the auditory loss recorded in the first step on the basis of the value of the highest auditory loss in each of the high and low frequency bands detected in the third step A fifth step of reading out the variable resistance value for adjusting the compression ratio of the high / low frequency compressing device capable of maximally compensating the variable resistance value for the crossover frequency adjustment, reading out the intermediate value of the variable range and outputting it to the control terminal; 상기 제 4 과정에서 고주파대역이 저주파대역에 비하여 청감손실량이 클 경우에는 고주파대역청감손실최대점과 저주파대역청감손실최저점을 기준으로 하여 상기 제 1 과정에서 기록된 최적 고/저주파압신기의 가변저항값과 저주파대역청감손실최저점을 시작점으로하여 영역의 끝점까지 검사하여 크로스오버 주파수가 임의의 트레스홀드값보다 크게 되는 크로스크로스오버주파수 저항값을 독출하여 제어단자로 출력하는 제 6 과정과;In the fourth step, when the high frequency band is larger than the low frequency band and the auditory loss is large, the variable resistance of the optimum high / low frequency compressing device recorded in the first process is referred to as the high frequency band auditory loss maximum point and the low frequency band auditory loss bottom point A cross-over frequency resistance having a cross-over frequency greater than an arbitrary threshold value and outputting the cross-cross-over frequency resistance value to a control terminal; 상기 제 4 과정에서 저주파대역이 고주파대역에 비하여 청감손실이 클 경우에는 저주파대역청감손실최대점과 고주파대역청감손실최저점을 기준으로 하여 상기 제 1 과정에서 기록된 보청기 고/저주파압신기의 가변저항값을 독출함과 아울러 고주파대역청감손실최저점을 시작점으로하여 영역의 끝점까지 검사하여 크로스오버 주파수가 임의의 트레스홀드값보다 크게 되는 크로스오버주파수 저항값을 독출하여 제어단자로 출력하여 보청기를 피팅하는 제 7과정을 포함하는 것을 특징으로 하는 디지탈 보청기 피팅방법.When the low frequency band is higher than the high frequency band in the fourth step, the variable resistance of the hearing aid high / low frequency amplifier recorded in the first step on the basis of the maximum value of the low frequency band auditory loss and the low frequency band of the high frequency band auditory loss, Value is read out, and the crossover frequency resistance is read out from the crossover frequency resistance value read out from the lowest point of the high frequency band starting point to the end point of the area, and the crossover frequency resistance value is read out to output to the control terminal to fit the hearing aid And a seventh step of fitting the digital hearing aid fitting method.
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