KR900019399A - 디지탈신호 처리장치 - Google Patents
디지탈신호 처리장치 Download PDFInfo
- Publication number
- KR900019399A KR900019399A KR1019900007389A KR900007389A KR900019399A KR 900019399 A KR900019399 A KR 900019399A KR 1019900007389 A KR1019900007389 A KR 1019900007389A KR 900007389 A KR900007389 A KR 900007389A KR 900019399 A KR900019399 A KR 900019399A
- Authority
- KR
- South Korea
- Prior art keywords
- requantization
- input signal
- period
- signal
- signal processing
- Prior art date
Links
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
- H03M7/3002—Conversion to or from differential modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B14/00—Transmission systems not characterised by the medium used for transmission
- H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
- H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
- H04B14/046—Systems or methods for reducing noise or bandwidth
-
- 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
- H03M7/3002—Conversion to or from differential modulation
- H03M7/3004—Digital delta-sigma modulation
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 의한 디지탈신호처리장치의 일실시예를 나타내는 블록도, 제2도 및 제3도는 그 동작의 설명을 위한 신호파형도.
Claims (1)
- 입력신호를 소정기간마다 구획하여, 각 기간의 입력신호의 스펙트럼 형상을 검출하는 스펙트럼 검출수단과, 입력신호에 따라서 상기 기간마다 주파수 특성을 전환하는 예측화 필터와, 상기 입력신호 및 상기 예측화필터의 출력신호와의 차신호를 출력하는 예측오차 검출수단과, 상기 차신호를 재양자화(再量子化)하여 출력하는 재양자화 수단과, 상기 스펙트럼 검출수단의 검출결과에 따라서 상기 기간마다 주파수 특성을 전환하고, 상기 재양자화시에 발생하는 재양자화 오차신호를 상기 재양자화수단에 귀환시키는 노이즈필터를 구비한 것을 특징으로 하는 디지탈신호 처리장치.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1131897A JPH02309820A (ja) | 1989-05-25 | 1989-05-25 | デイジタル信号処理装置 |
JP89-131897 | 1989-05-25 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR900019399A true KR900019399A (ko) | 1990-12-24 |
KR0167769B1 KR0167769B1 (ko) | 1999-03-20 |
Family
ID=15068715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019900007389A KR0167769B1 (ko) | 1989-05-25 | 1990-05-23 | 디지탈 신호 처리장치 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5166981A (ko) |
EP (1) | EP0400473B1 (ko) |
JP (1) | JPH02309820A (ko) |
KR (1) | KR0167769B1 (ko) |
DE (1) | DE69031786T2 (ko) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3033156B2 (ja) * | 1990-08-24 | 2000-04-17 | ソニー株式会社 | ディジタル信号符号化装置 |
JP2822734B2 (ja) * | 1991-11-29 | 1998-11-11 | 日本電気株式会社 | ノイズシェイパ |
US5522012A (en) * | 1994-02-28 | 1996-05-28 | Rutgers University | Speaker identification and verification system |
JP3601074B2 (ja) * | 1994-05-31 | 2004-12-15 | ソニー株式会社 | 信号処理方法及び信号処理装置 |
US5640490A (en) * | 1994-11-14 | 1997-06-17 | Fonix Corporation | User independent, real-time speech recognition system and method |
EP0772925B1 (en) * | 1995-05-03 | 2004-07-14 | Sony Corporation | Non-linearly quantizing an information signal |
JP3282661B2 (ja) * | 1997-05-16 | 2002-05-20 | ソニー株式会社 | 信号処理装置および方法 |
US6252905B1 (en) | 1998-02-05 | 2001-06-26 | International Business Machines Corporation | Real-time evaluation of compressed picture quality within a digital video encoder |
FI116642B (fi) * | 1998-02-09 | 2006-01-13 | Nokia Corp | Puheparametrien käsittelymenetelmä, puhekoodauksen käsittely-yksikkö ja verkkoelementti |
US7058572B1 (en) * | 2000-01-28 | 2006-06-06 | Nortel Networks Limited | Reducing acoustic noise in wireless and landline based telephony |
JP4735711B2 (ja) | 2008-12-17 | 2011-07-27 | ソニー株式会社 | 情報符号化装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4133976A (en) * | 1978-04-07 | 1979-01-09 | Bell Telephone Laboratories, Incorporated | Predictive speech signal coding with reduced noise effects |
US4354057A (en) * | 1980-04-08 | 1982-10-12 | Bell Telephone Laboratories, Incorporated | Predictive signal coding with partitioned quantization |
US4475227A (en) * | 1982-04-14 | 1984-10-02 | At&T Bell Laboratories | Adaptive prediction |
JPS60116000A (ja) * | 1983-11-28 | 1985-06-22 | ケイディディ株式会社 | 音声符号化装置 |
US4704730A (en) * | 1984-03-12 | 1987-11-03 | Allophonix, Inc. | Multi-state speech encoder and decoder |
DE68927483T2 (de) * | 1988-02-29 | 1997-04-03 | Sony Corp | Verfahren und Einrichtung zur Digitalsignalverarbeitung |
JP2551147B2 (ja) * | 1989-05-19 | 1996-11-06 | 国際電信電話株式会社 | 音声符号化方式 |
-
1989
- 1989-05-25 JP JP1131897A patent/JPH02309820A/ja active Pending
-
1990
- 1990-05-16 US US07/524,088 patent/US5166981A/en not_active Expired - Lifetime
- 1990-05-23 KR KR1019900007389A patent/KR0167769B1/ko not_active IP Right Cessation
- 1990-05-23 EP EP90109808A patent/EP0400473B1/en not_active Expired - Lifetime
- 1990-05-23 DE DE69031786T patent/DE69031786T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
KR0167769B1 (ko) | 1999-03-20 |
DE69031786D1 (de) | 1998-01-22 |
EP0400473B1 (en) | 1997-12-10 |
EP0400473A2 (en) | 1990-12-05 |
DE69031786T2 (de) | 1998-07-09 |
US5166981A (en) | 1992-11-24 |
JPH02309820A (ja) | 1990-12-25 |
EP0400473A3 (en) | 1991-12-27 |
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