KR950022177A - Band Division Coding Device - Google Patents

Band Division Coding Device Download PDF

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Publication number
KR950022177A
KR950022177A KR1019930027992A KR930027992A KR950022177A KR 950022177 A KR950022177 A KR 950022177A KR 1019930027992 A KR1019930027992 A KR 1019930027992A KR 930027992 A KR930027992 A KR 930027992A KR 950022177 A KR950022177 A KR 950022177A
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KR
South Korea
Prior art keywords
band
mask
frequency spectrum
mnr
noise ratio
Prior art date
Application number
KR1019930027992A
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Korean (ko)
Inventor
이상일
Original Assignee
배순훈
대우전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019930027992A priority Critical patent/KR950022177A/en
Publication of KR950022177A publication Critical patent/KR950022177A/en

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Abstract

본 발명은 대역 분할 부호화 장치에 관한 것으로 이를 위하여 입력되는 신호를 균일한 주파수 대역으로 분할하는 대역분할 필터와, 주파수 스텍트럼을 얻기위한 주파수 스텍트럼 분석기와, 마스크 대 잡음비를 계산하는 마스크 대 잡음비 계산부와, 마스크 대 잡음비 계산에 따라 각 밴드로 비트를 할당하는 적응 비트 할당부와, 대역분할 된 주파수 신호를 양자화하는 양자화기와, 양자화된 다수의 정보신호와 비트 할당부의 출력신호를 다중화하여 채널을 통해 전송하는 다중화기로 구성됨으로써 양자화 특성에 따른 잡음을 줄이고 또한 고속부호화가 가능하도록 한 것이다.The present invention relates to a band division encoding apparatus, and a band division filter for dividing an input signal into a uniform frequency band, a frequency spectrum analyzer for obtaining a frequency spectrum, a mask-to-noise ratio calculator for calculating a mask-to-noise ratio, An adaptive bit allocator for allocating bits to each band according to a mask-to-noise ratio calculation, a quantizer for quantizing band-divided frequency signals, and multiplexing the output signals of a plurality of quantized information signals and bit allocation units and transmitting them through a channel It is composed of a multiplexer to reduce noise due to quantization characteristics and to enable fast encoding.

Description

대역 분할 부호화 장치Band Division Coding Device

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

제2도는 본 발명에 따른 대역 분할 부호화 장치를 나타내는 블럭 구성도.2 is a block diagram illustrating a band division encoding apparatus according to the present invention.

Claims (1)

입력되는 신호를 균일한 주파수 대역으로 분할하는 대역분할 필터(Subband analysis Filter)(10)와; 입력되는 신호들에 대해 주파수 스펙트럼을 얻기 위한 주파수 스펙트럼 분석기(40)와; 상기 주파수 스펙트럼 분석기(40)에서 분석된 스펙트럼과 상기 대역 분할 필터(10)에서 대역 분할된 신호를 입력 받아 마스크 대 잡음비(Mask to Noise Ratio;MNR)를 계산하는 MNR계산부(50)와; 상기 MNR계산부(50)에서 계산된 MNR값에 따라 각 밴드로 비트를 할당하는 적용 비트 할당부(60)와; 상기 대역 분할 필터(10)에서 대역 분할된 주파수를 상기 적응비트 할당부(60)에서 할당된 비트에 응답하여 양자화하는 양자화기(20)와; 상기 양자화기 (20)에서 양자화된 신호와 상기 적응 비트 할당부(60)에서 출력되는 신호를 다중호하여 채널로 전송하는 다중화기(30)를 포함하는 대역 분할 부호화 장치.A subband analysis filter 10 for dividing an input signal into a uniform frequency band; A frequency spectrum analyzer 40 for obtaining a frequency spectrum with respect to the input signals; An MNR calculator 50 for receiving a spectrum analyzed by the frequency spectrum analyzer 40 and a signal divided by the band division filter 10 and calculating a mask to noise ratio (MNR); An applied bit allocator (60) for allocating bits to each band according to the MNR value calculated by the MNR calculator (50); A quantizer (20) for quantizing the frequency band-divided by the band division filter (10) in response to the bits allocated by the adaptive bit allocation unit (60); And a multiplexer (30) for multiplexing the signal quantized by the quantizer (20) and the signal output from the adaptive bit allocation unit (60) through a channel. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930027992A 1993-12-16 1993-12-16 Band Division Coding Device KR950022177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930027992A KR950022177A (en) 1993-12-16 1993-12-16 Band Division Coding Device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019930027992A KR950022177A (en) 1993-12-16 1993-12-16 Band Division Coding Device

Publications (1)

Publication Number Publication Date
KR950022177A true KR950022177A (en) 1995-07-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019930027992A KR950022177A (en) 1993-12-16 1993-12-16 Band Division Coding Device

Country Status (1)

Country Link
KR (1) KR950022177A (en)

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