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KR930005381A - High efficiency coding device and decoding device - Google Patents

High efficiency coding device and decoding device Download PDF

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Publication number
KR930005381A
KR930005381A KR1019920013475A KR920013475A KR930005381A KR 930005381 A KR930005381 A KR 930005381A KR 1019920013475 A KR1019920013475 A KR 1019920013475A KR 920013475 A KR920013475 A KR 920013475A KR 930005381 A KR930005381 A KR 930005381A
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South Korea
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high efficiency
spectrum
signal
efficiency encoding
frequency
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KR1019920013475A
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Korean (ko)
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KR100340368B1 (en
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겐쪼 아끼기리
Original Assignee
오오가 노리오
소니 가부시끼가이샤
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Publication of KR930005381A publication Critical patent/KR930005381A/en
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Publication of KR100340368B1 publication Critical patent/KR100340368B1/en

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    • 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

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

Abstract

내용 없음.No content.

Description

고능률 부호화 장치 및 복호화 장치High efficiency coding device and decoding device

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

제1도는 본 발명의 일실시예에 따른 부호화 장치의 구성예를 도시한 블록 회로도,1 is a block circuit diagram showing an example of the configuration of an encoding apparatus according to an embodiment of the present invention;

제2도는 그 실시예 장치의 신호의 주파수 및 시간 분할의 구체적인 예시도,2 is a detailed illustration of frequency and time division of a signal of an embodiment device;

제3도는 그 실시예 장치에 사용되는 적응 비트 할당 부호화 회로의 비트 배분 알고리즘의 일예를 설명하기 위한 기능 블럭도.3 is a functional block diagram for explaining an example of a bit allocation algorithm of an adaptive bit allocation coding circuit used in the embodiment apparatus.

Claims (7)

입력 디지탈 신호를 복수의 주파수 대역으로 분할함과 동시에, 각 주파수 대역마다 적용적으로 블록사이즈를 변화시킨후, 직교변환을 행하는 것에 의해 스펙트럼 데이타를 구하고, 이 스펙트럼 데이트를 임계대역마다 노이즈 세이핑 펙터를 이용하여 양자화 잡음의 스펙트럼을 청각적으로 적합하도록 적응적으로 비트할당을 행하고 부화 데이타를 얻는 고능률 부호화 장치에 있어서, 상기 노이즈 세이핑 펙터를 입력 신호의 크기 또는 입력신호의 스펙트럼 매끄러움에 관련한 신호의 적어도 하나에 따라 변경하는 것을 특징으로 하는 고능률 부호화 장치.By dividing the input digital signal into a plurality of frequency bands, changing the block size adaptively for each frequency band, and performing orthogonal transformation, the spectral data is obtained, and the spectral data is a noise shaping factor for each critical band. In the high-efficiency encoding apparatus for adaptively bit allocation to obtain the spectral noise of the quantized noise and to obtain the hatching data by using The high efficiency encoding apparatus, characterized in that for changing according to at least one of. 제1항의 디지탈 데이타의 고능률 부호화 장치에 의해 전송 또는 기록 재생된 신호를 복호화 하여 재생신호를 얻는 것을 특징로 하는 고능률 복호화 장치.A high efficiency decoding apparatus, wherein a reproduction signal is obtained by decoding a signal transmitted or recorded and reproduced by the high efficiency encoding apparatus for digital data according to claim 1. 제1항에 있어서, 상기 입력신호가 큰만큼, 또는 상기 입력신호의 스펙트럼이 매끄러운 만큼, 양자화 잡음 레벨이 평탄하게 접근하도록, 상기 노이즈 세이핑 펙터를 변경하는 것을 특징으로 하는 고능률 부호화 장치.The high efficiency encoding device according to claim 1, wherein the noise shaping factor is changed so that the quantization noise level approaches smoothly as the input signal is large or the spectrum of the input signal is smooth. 제3항에 있어서, 인접 스펙트럼 간의 차 정보에 관계한 신호를 스펙트럼의 매끄러움의 지표로서 이용하는 것을 특징으로 하는 고능률 부호화 장치.The high efficiency encoding device according to claim 3, wherein a signal relating to difference information between adjacent spectrums is used as an index of smoothness of the spectrum. 제4항에 있어서, 주파수 축상의 블록 플로팅을 위한 블록간의 신호 크기에 차 정보에 관계한 신호를 스펙트럼의 매끄러움의 지표로서 이용하는 것을 특징으로 하는 고능률 부호화 장치.The high efficiency encoding apparatus according to claim 4, wherein a signal relating to difference information in signal magnitude between blocks for block plotting on a frequency axis is used as an index of smoothness of a spectrum. 제4항에 있어서, 상기 입력신호의 크기가 작은 만큼, 고역 스펙트럼을 저감한 스펙트럼을 기초로한 비트할당을 행하는 것을 특징으로 하는 고능률 부호화 장치.The high efficiency encoding device according to claim 4, wherein bit allocation is performed on the basis of a spectrum in which a high frequency spectrum is reduced as the magnitude of the input signal is small. 제6항에 있어서, 개략 최소 가청한도 레벨의 최소의 주파수 이상의 신호 크기가 작은 만큼, 고역 스펙트럼을 저감한 스펙트럼을 기초로한 비트 할당을 행하는 것을 특징으로 하는 고능률 부호화 장치.7. The high efficiency encoding device according to claim 6, wherein bit allocation is performed on the basis of the spectrum of which the high frequency spectrum is reduced as the signal size of the minimum frequency above the minimum minimum audible limit level is small. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920013475A 1991-08-27 1992-07-28 High Efficiency Encoder, Decoder and Digital Data Derivation Method KR100340368B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP91-271774 1991-08-27
JP3271774A JPH05114863A (en) 1991-08-27 1991-08-27 High-efficiency encoding device and decoding device

Publications (2)

Publication Number Publication Date
KR930005381A true KR930005381A (en) 1993-03-23
KR100340368B1 KR100340368B1 (en) 2002-11-23

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KR1019920013475A KR100340368B1 (en) 1991-08-27 1992-07-28 High Efficiency Encoder, Decoder and Digital Data Derivation Method

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KR (1) KR100340368B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2707874A4 (en) * 2011-05-13 2014-12-03 Samsung Electronics Co Ltd Bit allocating, audio encoding and decoding

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JPH05114863A (en) 1993-05-07
KR100340368B1 (en) 2002-11-23

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