KR920013251A - Pitch detection device and method for voice and acoustic sound - Google Patents

Pitch detection device and method for voice and acoustic sound Download PDF

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Publication number
KR920013251A
KR920013251A KR1019900022594A KR900022594A KR920013251A KR 920013251 A KR920013251 A KR 920013251A KR 1019900022594 A KR1019900022594 A KR 1019900022594A KR 900022594 A KR900022594 A KR 900022594A KR 920013251 A KR920013251 A KR 920013251A
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South Korea
Prior art keywords
signal
peak value
pass filter
low pass
frequency
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KR1019900022594A
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Korean (ko)
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KR930007791B1 (en
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이우혁
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이헌조
주식회사 금성사
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Priority to KR1019900022594A priority Critical patent/KR930007791B1/en
Publication of KR920013251A publication Critical patent/KR920013251A/en
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/90Pitch determination of speech signals

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Auxiliary Devices For Music (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

내용 없음No content

Description

음성 및 어코스틱음의 피치 검출장치 및 방법Pitch detection device and method for voice and acoustic sound

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 구성도.1 is a block diagram of the present invention.

Claims (3)

컷 오프주파수에 입력되는 음의 가청주파수신호만을 통과시키는 저역통과필터(1)와, 저역통과필터 출력신호의 피크값을 검출하는 피크검출회로(2)와, 피크값과 피크값사이의 시간을 산출하고 산출된 값을 이용하여 저역통과필터의 컷 오프주파수신호와 표시부로의 표시제어신호를 출력하는 마이크로프로세서부(3), 상기 컷 오프주파수 신호를 입력하고 이를 아날로그 변환하여 저역통과필터에 출력하는 D/A변환부(4), 마이크로프로세서부(3)의 제어신호에 따라 최신의 컷 오프주파수에 대응되는 상태를 디스플레이하는 표시부(5)로 구성함을 특징으로 하는 음성 및 어코스틱음의 피치검출장치.A low pass filter 1 for passing only a negative audible frequency signal input to the cut-off frequency, a peak detection circuit 2 for detecting a peak value of the low pass filter output signal, and a time between the peak value and the peak value The microprocessor unit 3 which outputs the cut-off frequency signal of the low pass filter and the display control signal to the display unit using the calculated value, inputs the cut-off frequency signal, and converts the cut-off frequency signal into analogue output to the low pass filter. Voice and acoustic sound, characterized in that the display section 5 for displaying the state corresponding to the latest cut-off frequency in accordance with the control signal of the D / A conversion unit 4 and the microprocessor unit 3 Pitch detection device. 입력되는 신호중 가청주파수에 해당하는 신호만을 여과하는 단계, 상기 여과된 신호의 피크값을 검출하고 피크값과 피크값사이의 시간을 산출하는 간계, 산출된 피크값 사이의 시간을 이용하여 가청주파수만을 선택하기 위한 컷오프주파수신호를 산출하는 단계, 상기 산출된 컷오프주파수신호에 상응하는 표시제어신호에 따라 최신의 컷 오프주파수상태를 디스플레이하는 단계를 차례로 포함함을 특징으로 하는 음성 및 어코스틱음의 피치 검출방법Filtering only a signal corresponding to an audible frequency among the input signals, a trick of detecting a peak value of the filtered signal and calculating a time between the peak value and the peak value, and using only the audible frequency using the time between the calculated peak values Calculating a cutoff frequency signal for selection, and displaying the latest cutoff frequency state in accordance with a display control signal corresponding to the calculated cutoff frequency signal. Detection method 제1항에 있어서, 상기 피크검출회로는 저역통과필터의 출력신호를 입력하여 피크값을 검출하고 이를 홀딩시키는 피크값 홀더와, 이 피크값 홀더의 출력을 기준신호로 하고 이를 변화되는 저역통과필터의 출력과 비교하여 하이 또는 로우상태를 출력하는 비교기로 구성함을 특징으로 하는 음성 및 어코스틱의 피치검출장치.2. The peak detection circuit of claim 1, wherein the peak detection circuit inputs an output signal of the low pass filter to detect and hold a peak value, and a low pass filter that changes the output of the peak value holder as a reference signal. Voice and acoustic pitch detection device, characterized in that configured as a comparator for outputting a high or low state in comparison with the output of. ※ 참고사항 : 최초출원 내용에 의하여 공개되는 것임.※ Note: This is to be disclosed by the original application.
KR1019900022594A 1990-12-31 1990-12-31 Pitch detecting device and method of voice and acoustic sound KR930007791B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019900022594A KR930007791B1 (en) 1990-12-31 1990-12-31 Pitch detecting device and method of voice and acoustic sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019900022594A KR930007791B1 (en) 1990-12-31 1990-12-31 Pitch detecting device and method of voice and acoustic sound

Publications (2)

Publication Number Publication Date
KR920013251A true KR920013251A (en) 1992-07-28
KR930007791B1 KR930007791B1 (en) 1993-08-19

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KR1019900022594A KR930007791B1 (en) 1990-12-31 1990-12-31 Pitch detecting device and method of voice and acoustic sound

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Publication number Publication date
KR930007791B1 (en) 1993-08-19

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