KR960016154A - PCM data compression extension system - Google Patents

PCM data compression extension system Download PDF

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Publication number
KR960016154A
KR960016154A KR1019940026224A KR19940026224A KR960016154A KR 960016154 A KR960016154 A KR 960016154A KR 1019940026224 A KR1019940026224 A KR 1019940026224A KR 19940026224 A KR19940026224 A KR 19940026224A KR 960016154 A KR960016154 A KR 960016154A
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KR
South Korea
Prior art keywords
data
voice
pcm
tone
reproducing
Prior art date
Application number
KR1019940026224A
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Korean (ko)
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KR970011721B1 (en
Inventor
김상용
Original Assignee
문정환
금성일렉트론 주식회사
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Application filed by 문정환, 금성일렉트론 주식회사 filed Critical 문정환
Priority to KR94026224A priority Critical patent/KR970011721B1/en
Publication of KR960016154A publication Critical patent/KR960016154A/en
Application granted granted Critical
Publication of KR970011721B1 publication Critical patent/KR970011721B1/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3053—Block-companding PCM systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression

Abstract

본 발명은 피씨엠(PCM) 음색데이타의 압축신장시스템에 관한 것으로, 종래에는 피씨엠방식 사운드 발생회로의 음색데이타는 원래 샘플링했던 16비트 데이타를 그대로 음색샘플링 데이타 메모리에 저장시켜 사용하기 때문에 수백가지에 이르는 음색데이타를 저장하기 위해서는 음색샘플링 데이타 메모리의 크기가 커짐에 따라 피씨엠방식 사운드발생기의 생산간격을 상승시키게 되는 문제점과, 또한 샘플링데이타의 무단복제가 쉽기 때문에 제품고유의 샘플링기술을 보호하기 어려운 문제점이 있었다. 따라서 본 발명은 샘플링데이타 메모리의 사용량을 최대 50%이상 줄일 수 있도록 하여 비용절감의 효과를 가져오도록 함과 아울러 압축된 데이타를 다른 사람이 그대로 사용할 수 없음에 따라 정보유출을 방지하도록 한다.The present invention relates to a compression extension system of PCM (PCM) sound data. Conventionally, the sound data of the PCM sound generation circuit uses the 16-bit data originally sampled in the tone sampling data memory. In order to store the tone data up to the size, the size of the voice sampling data memory increases, which increases the production interval of the PC-type sound generator, and also protects the unique sampling technology because the sampling data is easily copied. There was a difficult problem. Therefore, the present invention can reduce the usage of sampling data memory by up to 50% or more, thereby reducing the cost and preventing information leakage as others cannot use the compressed data as it is.

Description

피씨엠(PCM)데이타의 압축신장 시스템PCM data compression extension system

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

제3도는 본 발명의 피씨엠(PCM) 데이타의 압축신장 시스템 구성도.3 is a diagram illustrating a system for compressing and extending PCM data of the present invention.

Claims (2)

샘플링된 데이타의 상위비트를 저장하는 상위음색 데이타메모리(101)와, 샘플링된 데이타의 하위비트를 저장하는 하위음색 데이타메모리(102)와, 상기 상, 하위음색 데이타메모리(101)(102)로 원하는 데이타를 발생하도록 해당하는 상, 하위어드레스를 각각 발생하는 어드레스발생부(100)와, 상기 상위어드레스에 의해 발생하는 반복량코드 및 데이타증감코드를 입력받아 재생 파라메터에 따라 원래의 상위음색으로 재생하는 상위음색재생부(103)와, 상기 하위어드레스에 의해 발생하는 하위음색코드를 입력받아 재생 파라메터에 의해 하위음색을 재생하는 하위음색재생부(109)와, 상기 상, 하위음색재생부(103)(104)의 출력을 받아 원래의 사운드로 계산하여 주는 디지탈신호 처리부(105)와, 상기 디지탈신호 처리부(105)의 디지탈신호로 변환시켜 주는 디지탈/아날로그변환부(106)로 구성됨을 특징으로 하는 피씨엠(PCM)음색데이타의 압축신장시스템.The upper voice data memory 101 storing the upper bits of the sampled data, the lower voice data memory 102 storing the lower bits of the sampled data, and the upper and lower voice data memories 101 and 102. Receives the address generation unit 100 for generating the corresponding upper and lower addresses, and the repetition amount code and the data increase / decrease code generated by the upper address so as to generate desired data, and reproduces the original upper tone according to the reproduction parameter. The upper voice reproducing unit 103, the lower voice reproducing unit 109 for receiving a lower voice code generated by the lower address, and reproducing the lower voice by the reproduction parameter; and the upper and lower voice reproducing unit 103 Digital signal processing unit 105 that receives the output of the 104) and calculates the original sound, and digital / ah which converts the digital signal of the digital signal processing unit 105 into digital signals. PC M. (PCM) of voice data compression expansion system characterized by consisting of a log converter 106. 제1항에 있어서, 상위음색재생부는 입력되는 증감코드를 재생 파라메터에 의해 입력된 특정음색 초기값과 함께 연산하여 내부의 레지스터에 저장한 후 다음번 음색을 연산하는 값으로 사용하고, 입력되는 반복량코드는 그 내부의 카운터에 입력되어 반복량만큼 상위어드레스를 유지시켜 주도록 하는 것을 특징으로 하는 피씨엠(PCM)음색데이타의 압축신장시스템.The method of claim 1, wherein the upper tone reproducing unit calculates the input / decrease code together with the specific tone initial value inputted by the reproducing parameter, stores it in an internal register, and uses the next tone to calculate the next tone. The code is input to the internal counter to maintain the upper address by the amount of repetition PCM (PCM) audio data compression extension system characterized in that the. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR94026224A 1994-10-13 1994-10-13 Compression and system of pcm data KR970011721B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Publications (2)

Publication Number Publication Date
KR960016154A true KR960016154A (en) 1996-05-22
KR970011721B1 KR970011721B1 (en) 1997-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR94026224A KR970011721B1 (en) 1994-10-13 1994-10-13 Compression and system of pcm data

Country Status (1)

Country Link
KR (1) KR970011721B1 (en)

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Publication number Publication date
KR970011721B1 (en) 1997-07-14

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