KR960036342A - Data conversion circuit - Google Patents

Data conversion circuit Download PDF

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Publication number
KR960036342A
KR960036342A KR1019950005416A KR19950005416A KR960036342A KR 960036342 A KR960036342 A KR 960036342A KR 1019950005416 A KR1019950005416 A KR 1019950005416A KR 19950005416 A KR19950005416 A KR 19950005416A KR 960036342 A KR960036342 A KR 960036342A
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South Korea
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signal
data
unit
output
bit
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KR1019950005416A
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Korean (ko)
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KR0140777B1 (en
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정윤형
윤정식
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김주용
현대전자산업 주식회사
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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/0018Speech coding using phonetic or linguistical decoding of the source; Reconstruction using text-to-speech synthesis
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/003Changing voice quality, e.g. pitch or formants

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

본 발명의 데이터 변환회로는 음성신호의 16비트 선형 디지털 데이터를 8비트의 로그 데이터로 변환하여 출력하는 것으로서 종래에는 음성신호를 자음 및 모음에 관계없이 양자화하였으므로 자음의 양자화시 정보량의 관점에서 불균형을 초래하게 되고, 또한 양자화 잡음이 많이 발생하였다. 본 발명은 음성신호의 16비트 선형 디지털 데이터를 8비트의 로그 데이터로 변환하여 소진폭파형의 신호를 16비트 양자화한 효과를 갖도록 하고, 또한 비트 레이트는 64비트 레이트가 되게 8비트 로가리즘 양자화함으로써 소진폭의 파형이 16비트 양자화한 효과를 갖게 됨은 물론 양자화 잡음이 거의 발생하지 않는다.The data conversion circuit of the present invention converts 16-bit linear digital data of an audio signal into 8-bit log data and outputs the conventional audio signal. The conventional audio signal is quantized regardless of consonants and vowels. It also causes a lot of quantization noise. The present invention has the effect of converting 16-bit linear digital data of an audio signal into 8-bit log data so as to have a 16-bit quantization of a small amplitude waveform signal, and the bit rate is 64-bit rate. As a result, the waveform of the small amplitude has a 16-bit quantization effect and almost no quantization noise occurs.

Description

데이터 변환회로Data conversion circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 데이터 변환회로도, 제2도는 제1도의 정규화부의 상세 회로도.1 is a data conversion circuit diagram of the present invention, and FIG. 2 is a detailed circuit diagram of the normalization unit of FIG.

Claims (5)

클럭신호를 발생하는 클럭 발생부(1)와, 상기 클럭 발생부(1)의 출력신호를 16분주하여 출력하는 16분주기(2)와, 상기 16분주기(2)의 출력신호에 따라 클리어 신호를 발생하는 클리어신호 발생부(3)와, 입력되는 직렬 데이터 신호를 16비트의 선형 디지털 데이터로 변환하여 출력하는 직렬/병렬 변환부(4)와, 상기 직력/병렬 변환부(4)에서 출력된느 하위 15비트의 신호중에서 12비트의 신호만을 출력하는 데이터 절단부(5)와, 상기 데이터 절단부(5)의 출력신호를 상기 직력/병렬 변환부(4)에서 출력되는 최상위비트(b15)의 신호에 따라 데이터 반전부(6)와, 상기 직렬/병렬 변환부(4)에서 출력되는 최상위 비트(b15)의 신호에 따라 데이터 반전부(6)와, 상기 직력/병렬 변환부(4)에서 출력되는 최상위비트(b15)의 신호를 반전시키는 인버터(7)와, 상기 클리어신호 발생부(3)의 출력신호에 따라 클리어되면서 상기 데이터 반전부(6)의 출력신호를 상기 클럭 발생부(1) 및 인버터(7)의 출력 신호에 따라 8비트의 로그 데이터로 변환하는 정규화부(8)와, 상기 정규화부(8)의 출력신호에서 짝수비트의 신호를 반전시키는 짝수비트 반전부(9)와, 상기 짝수비트 반전부(9)의 출력신호를 상기 클럭 발생부(1) 및 상기 16분주기(2)의 출력신호에 따라 직렬로 변환하여 출력하는 병렬/직렬 변환부(10)로 구성됨을 특징으로 하는 데이터 변환회로.Clear according to the clock generator 1 for generating the clock signal, the 16 divider 2 for dividing the output signal of the clock generator 1 by 16, and the output signal of the 16 divider 2 A clear signal generator 3 for generating a signal, a serial / parallel converter 4 for converting an input serial data signal into 16-bit linear digital data and outputting the same, and the serial / parallel converter 4 The data cutting unit 5 outputting only a 12-bit signal among the lower 15-bit signals output, and the most significant bit b 15 outputting the output signal of the data cutting unit 5 from the serial / parallel conversion unit 4. In accordance with the signal of the data inverting section 6, the data inverting section 6 and the serial / parallel conversion section (in accordance with the signal of the most significant bit (b 15 ) output from the serial / parallel converter 4; and 4) the most significant bit (the inverter (7) for inverting the signal 15 b) outputted from, generating the clear signal The normalization unit 8 converts the output signal of the data inverting unit 6 into 8-bit log data according to the output signals of the clock generator 1 and the inverter 7 while being cleared according to the output signal of (3). ), An even bit inverting unit 9 for inverting an even bit signal from the output signal of the normalization unit 8, and an output signal of the even bit inverting unit 9 to the clock generator 1 and the And a parallel / serial conversion section (10) for converting and outputting in series according to the output signal of the 16 divider (2). 제1항에 있어서, 데이터 절단부(5)는 하위 15비트(b14∼b0)의 신호중에서 하위 3비트의 신호를 제거하고 12비트(b14∼b3)의 신호만을 출력하는 것을 특징으로 하는 데이터 변환회로.2. The data cutting unit (5) according to claim 1, characterized in that the data truncation section (5) removes the lower 3 bits of the signals from the lower 15 bits (b 14 to b 0 ) and outputs only the 12 bits (b 14 to b 3 ). Data conversion circuit. 제1항에 있어서, 데이터 반전부(6)는, 데이터 절단부(5)의 출력신호를 상기 직렬/병렬 변환부(4)에서 출력되는 최상위 비트(b15)의 신호와 각기 배타적 논리합하여 반전시키는 것을 특징으로 하는 데이터 변환회로.2. The data inverting unit (6) according to claim 1, wherein the data inverting unit (6) inverts the output signal of the data cutting unit (5) exclusively by inverting each of the signals of the most significant bit (b 15 ) output from the serial / parallel conversion unit (4). And a data conversion circuit. 제1항에 있어서, 정규화부(8)는 데이터 반전부(6)의 출력신호를 천이 제어신호(/SH)에 따라 1비트씩 상위비트로 천이시키는 데이터 천이부(81)와, 천이 제어신호(/SH)를 카운트하는 카운터(82)와, 상기 카운터(82)의 출력신호가 미리 설정된 값인지를 판단하는 카운트값 판별부(83)와, 상기 천이 제어신호(/SH) 및 카운터값 판별부(83)의 출력신호에 따라 출력 제어신호(DR)를 발생하는 출력 제어부(84)와, 상기 데이터 천이부(81)의 최상의 비트(B11) 신호 및 상기 출력 제어부(84)의 출력 신호를 논리 합하여 천이 제어신호(/SH)를 발생하는 오아 게이트(85)와, 상기 카운터(82)의 출력단자(Q0) 신호 및 오아 게이트(85)의 출력신호를 논리 곱하여 제4비트(B4)의 신호를 발생하는 앤드 게이트(86)와, 상기 출력 제어신호(DR)에 따라 인버터(7), 카운터(82)의 출력단자(Q2)(Q1),앤드 게이트(86) 및 데이터 천이부(81)의 제10∼7비트(B10∼B7)의 신호를 저장 및 제7∼0비트(B7∼B0)의 로그 데이터로 출력하는 데이터 할당부(87)로 구성됨을 특징으로 하는 데이터 변환회로.The data transition unit 81 according to claim 1, wherein the normalization unit 8 transitions the output signal of the data inverting unit 6 into higher bits by one bit according to the transition control signal / SH, and the transition control signal ( / SH), a counter value counting unit 83 for determining whether the output signal of the counter 82 is a preset value, and the transition control signal (/ SH) and the counter value determination unit An output control unit 84 for generating an output control signal DR according to the output signal of (83), the most significant bit B 11 signal of the data transition unit 81, and an output signal of the output control unit 84; The OR gate 85 generating the transition control signal / SH by logical sum and the output terminal Q 0 signal of the counter 82 and the output signal of the OR gate 85 are logically multiplied by the fourth bit B 4. ) the aND gate 86 and the output terminal (Q 2) (Q 1) of the inverter 7, a counter 82 in response to the output control signal (DR), and for generating a signal of a Gate 86 and the data shift section 81 first bits 10-7 (B 10 ~B 7) data is assigned to output the signal to the storage and log data of the 7-0 bits (B 0 ~B 7) of the portion of the And a data conversion circuit, characterized in that (87). 제4항에 있어서, 카운터(82)는 천이 제어신호(/SH)를 논리 ‘111’부터 감산 카운트하고, 카운트값 판별부(83)는 카운터(82)의 카운트값이 논리 ‘001’인지를 판별하는 것을 특징으로 하는 데이터 변환회로.The counter 82 subtracts the transition control signal / SH from logic '111', and the count value determination unit 83 determines whether the count value of the counter 82 is logical '001'. And a data conversion circuit for discriminating. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019950005416A 1995-03-16 1995-03-16 Data transformation circuit KR0140777B1 (en)

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KR1019950005416A KR0140777B1 (en) 1995-03-16 1995-03-16 Data transformation circuit

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KR960036342A true KR960036342A (en) 1996-10-28
KR0140777B1 KR0140777B1 (en) 1998-07-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100963829B1 (en) * 2008-04-23 2010-06-16 국방과학연구소 Digital data convertor and method for converting digital data

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100963829B1 (en) * 2008-04-23 2010-06-16 국방과학연구소 Digital data convertor and method for converting digital data

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