JPS6419400A - Voice recorder/reproducer - Google Patents
Voice recorder/reproducerInfo
- Publication number
- JPS6419400A JPS6419400A JP62175712A JP17571287A JPS6419400A JP S6419400 A JPS6419400 A JP S6419400A JP 62175712 A JP62175712 A JP 62175712A JP 17571287 A JP17571287 A JP 17571287A JP S6419400 A JPS6419400 A JP S6419400A
- Authority
- JP
- Japan
- Prior art keywords
- compression
- tables
- small
- expansion
- expansion conversion
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/16—Storage of analogue signals in digital stores using an arrangement comprising analogue/digital [A/D] converters, digital memories and digital/analogue [D/A] converters
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00007—Time or data compression or expansion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M3/00—Conversion of analogue values to or from differential modulation
- H03M3/04—Differential modulation with several bits, e.g. differential pulse code modulation [DPCM]
-
- 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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2207/00—Indexing scheme relating to arrangements for writing information into, or reading information out from, a digital store
- G11C2207/16—Solid state audio
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175712A JPH0738120B2 (ja) | 1987-07-14 | 1987-07-14 | 音声記録再生装置 |
US07/216,539 US4910780A (en) | 1987-07-14 | 1988-07-08 | Audio signal recording and reproducing apparatus utilizing digital data compression and extension |
EP88306344A EP0299711B1 (en) | 1987-07-14 | 1988-07-12 | An audio signal recording and reproducing apparatus |
DE3888250T DE3888250T2 (de) | 1987-07-14 | 1988-07-12 | Aufnahme- und Wiedergabegerät für Audiosignale. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62175712A JPH0738120B2 (ja) | 1987-07-14 | 1987-07-14 | 音声記録再生装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6419400A true JPS6419400A (en) | 1989-01-23 |
JPH0738120B2 JPH0738120B2 (ja) | 1995-04-26 |
Family
ID=16000919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62175712A Expired - Fee Related JPH0738120B2 (ja) | 1987-07-14 | 1987-07-14 | 音声記録再生装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US4910780A (ja) |
EP (1) | EP0299711B1 (ja) |
JP (1) | JPH0738120B2 (ja) |
DE (1) | DE3888250T2 (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69018540T2 (de) * | 1989-08-17 | 1995-11-23 | Sharp Kk | Faksimilekommunikationsapparat. |
AU6877791A (en) * | 1989-10-25 | 1991-05-31 | Motorola, Inc. | Speech waveform compression technique |
DE4227826C2 (de) * | 1991-08-23 | 1999-07-22 | Hitachi Ltd | Digitales Verarbeitungsgerät für akustische Signale |
US5517614A (en) * | 1992-05-29 | 1996-05-14 | Kabushiki Kaisha Toshiba | Data compression/encryption processing apparatus |
GB2294140B (en) * | 1992-05-29 | 1996-11-27 | Toshiba Kk | Data processing apparatus |
US5717818A (en) * | 1992-08-18 | 1998-02-10 | Hitachi, Ltd. | Audio signal storing apparatus having a function for converting speech speed |
PT598682E (pt) * | 1992-11-19 | 2003-11-28 | Liechti Ag | Processo e dispositivo para determinacao do comportamento dos ouvintes de emissoes de radio |
US5642463A (en) * | 1992-12-21 | 1997-06-24 | Sharp Kabushiki Kaisha | Stereophonic voice recording and playback device |
DE4434255A1 (de) * | 1994-09-24 | 1996-03-28 | Sel Alcatel Ag | Vorrichtung zur Sprachaufzeichnung mit anschließender Texterstellung |
US5828994A (en) * | 1996-06-05 | 1998-10-27 | Interval Research Corporation | Non-uniform time scale modification of recorded audio |
JPH10187199A (ja) * | 1996-12-24 | 1998-07-14 | Oki Electric Ind Co Ltd | 半導体記憶媒体記録装置及び半導体記憶媒体再生装置 |
WO1999041748A1 (en) * | 1998-02-11 | 1999-08-19 | Zbigniew Karwowski | System and method for recording voice data to and reading voice data from a data storage device on an item of media |
US20090322953A1 (en) * | 1999-09-08 | 2009-12-31 | Weiss Kenneth P | Method and apparatus for achieving selected audio/video and other functions |
US20040260415A1 (en) * | 1999-09-08 | 2004-12-23 | Weiss Kenneth P. | Method and apparatus for achieving selected audio and other functions |
KR20150096217A (ko) * | 2014-02-14 | 2015-08-24 | 한국전자통신연구원 | 디지털 데이터 압축 방법 및 장치 |
CN104392744A (zh) * | 2014-08-27 | 2015-03-04 | 贵阳朗玛信息技术股份有限公司 | 一种录制音频的方法及装置 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5875200A (ja) * | 1981-10-29 | 1983-05-06 | シャープ株式会社 | 情報処理装置 |
JPS6184696A (ja) * | 1984-10-03 | 1986-04-30 | 松下電器産業株式会社 | 実時間デイジタル録音再生装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513466B1 (ja) * | 1970-05-18 | 1976-02-03 | ||
US4021799A (en) * | 1970-05-18 | 1977-05-03 | Fujitsu Ltd. | Non-linear coding system |
US4130729A (en) * | 1977-09-19 | 1978-12-19 | Scitronix Corporation | Compressed speech system |
US4354273A (en) * | 1979-06-12 | 1982-10-12 | Nippon Electric Company, Ltd. | ADPCM System for speech or like signals |
US4481659A (en) * | 1982-02-11 | 1984-11-06 | Universite De Sherbrooke | Apparatus and method of reducing the bit rate of PCM speech |
DE3306334A1 (de) * | 1983-02-23 | 1984-08-23 | Siemens AG, 1000 Berlin und 8000 München | Quantisierer fuer dpcm-codierer |
CA1208789A (en) * | 1983-11-25 | 1986-07-29 | Peter E. Chow | Adpcm encoder/decoder with improved tracking |
DE3534064A1 (de) * | 1984-09-26 | 1986-04-03 | Mitsubishi Denki K.K., Tokio/Tokyo | Empfangsgeraet |
US4633331A (en) * | 1985-06-06 | 1986-12-30 | Picotrin Technology, Inc. | Information signal delay system utilizing random access memory |
EP0245531A1 (de) * | 1986-05-14 | 1987-11-19 | Deutsche ITT Industries GmbH | Verwendung von halbleitertechnischen Festwertspeichern |
-
1987
- 1987-07-14 JP JP62175712A patent/JPH0738120B2/ja not_active Expired - Fee Related
-
1988
- 1988-07-08 US US07/216,539 patent/US4910780A/en not_active Expired - Lifetime
- 1988-07-12 DE DE3888250T patent/DE3888250T2/de not_active Expired - Fee Related
- 1988-07-12 EP EP88306344A patent/EP0299711B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5875200A (ja) * | 1981-10-29 | 1983-05-06 | シャープ株式会社 | 情報処理装置 |
JPS6184696A (ja) * | 1984-10-03 | 1986-04-30 | 松下電器産業株式会社 | 実時間デイジタル録音再生装置 |
Also Published As
Publication number | Publication date |
---|---|
DE3888250T2 (de) | 1994-07-07 |
EP0299711B1 (en) | 1994-03-09 |
EP0299711A2 (en) | 1989-01-18 |
DE3888250D1 (de) | 1994-04-14 |
US4910780A (en) | 1990-03-20 |
EP0299711A3 (en) | 1989-09-20 |
JPH0738120B2 (ja) | 1995-04-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |