NO943520L - "Datareduksjon" ved lagring/overföring av digitale lydsignaler for studiobruk - Google Patents
"Datareduksjon" ved lagring/overföring av digitale lydsignaler for studiobrukInfo
- Publication number
- NO943520L NO943520L NO943520A NO943520A NO943520L NO 943520 L NO943520 L NO 943520L NO 943520 A NO943520 A NO 943520A NO 943520 A NO943520 A NO 943520A NO 943520 L NO943520 L NO 943520L
- Authority
- NO
- Norway
- Prior art keywords
- audio signals
- studio
- digital audio
- transmitted
- subsequent processing
- Prior art date
Links
- 230000005236 sound signal Effects 0.000 title abstract 5
- 238000000034 method Methods 0.000 abstract 4
- 238000005516 engineering process Methods 0.000 abstract 2
- BSYNRYMUTXBXSQ-UHFFFAOYSA-N Aspirin Chemical compound CC(=O)OC1=CC=CC=C1C(O)=O BSYNRYMUTXBXSQ-UHFFFAOYSA-N 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000013144 data compression Methods 0.000 abstract 1
- 238000005562 fading Methods 0.000 abstract 1
- 230000000873 masking effect Effects 0.000 abstract 1
- 230000017105 transposition Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/86—Arrangements characterised by the broadcast information itself
- H04H20/95—Arrangements characterised by the broadcast information itself characterised by a specific format, e.g. an encoded audio stream
-
- 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
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
- H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Circuits Of Receivers In General (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Stereo-Broadcasting Methods (AREA)
Abstract
Fremgangsmåte for såkalt "datareduk- sjon" ved lagring og/eller overføring av digitale lydsignaler. Kjente frem- gangsmåter så som i henhold til ASPC tillater høykvalitets musikk overføring i en digital signalfølge hvor mindre enn 10 % av informasjonen i den tilsvarende signalfølge fra en CD utnyttes. Imid- lertid er de kjente reduksjonsmåter ikke egnet for profesjonell studieteknikk, siden den foreskrevne signaletterbehand- ling av lydsignalene kan føre til hør- bare forstyrrelser. En forbedret måte å utføre slik reduksjon av overflødig digitalsignal- omfang innebærer ufølsomhet overfor etterbehandling, så som kaskadekoding, blanding eller signalsvekking. Denne ufølsomhet oppnås ved at lydsignalet transformeres fra tidsplanet til frek- vensplanet ved hjelp av en filterbank som gir perfekt rekonstruksjon av sig- nalet, at man videre bruker den psyk- oakustiske maskeringsvirkning i mindre grad enn tidligere, og at man bruker en kaskadekoblet flerdimensjonal Huffman- kode som kode med varierbar ordlengde. Fremgangsmåten tillater en over- føring av lydsignaler for studieteknikk ved 1. overføringshastighet på 192 kbit/s per kanal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4209382A DE4209382C1 (no) | 1992-03-23 | 1992-03-23 | |
| PCT/DE1993/000177 WO1993019536A1 (de) | 1992-03-23 | 1993-02-25 | Verfahren zur datenreduktioin bei der speicherung und/oder übertragung digitaler audiosignale für studioanwendungen mit perceptiver codierung und code variabler länge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NO943520L true NO943520L (no) | 1994-09-22 |
| NO943520D0 NO943520D0 (no) | 1994-09-22 |
Family
ID=6454791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO943520A NO943520D0 (no) | 1992-03-23 | 1994-09-22 | "Datareduksjon" ved lagring/overföring av digitale lydsignaler for studiobruk |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0632940B1 (no) |
| JP (1) | JPH07508375A (no) |
| KR (1) | KR950701161A (no) |
| AT (1) | ATE197105T1 (no) |
| AU (1) | AU670068B2 (no) |
| CA (1) | CA2131806A1 (no) |
| DE (2) | DE4209382C1 (no) |
| NO (1) | NO943520D0 (no) |
| WO (1) | WO1993019536A1 (no) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59812332D1 (de) * | 1997-03-14 | 2005-01-05 | Siemens Ag | Verfahren zur informationsübermittlung an einen mobilen empfänger, wie einen pager, unter verwendung von rundfunksendern |
| DE10119980C1 (de) * | 2001-04-24 | 2002-11-07 | Bosch Gmbh Robert | Verfahren zur Codierung von Audiodaten |
| DE10240135B4 (de) | 2002-08-30 | 2006-10-26 | Infineon Technologies Ag | Verfahren und Vorrichtung zur digitalen Filterung interpolierter Werte |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59200592A (ja) * | 1983-04-27 | 1984-11-13 | Fuji Photo Film Co Ltd | カラ−画像の適応形圧縮方式 |
| US4546342A (en) * | 1983-12-14 | 1985-10-08 | Digital Recording Research Limited Partnership | Data compression method and apparatus |
| US5028995A (en) * | 1987-10-28 | 1991-07-02 | Hitachi, Ltd. | Picture signal processor, picture signal coder and picture signal interpolator |
| DE3912605B4 (de) * | 1989-04-17 | 2008-09-04 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Digitales Codierverfahren |
| DE3930760A1 (de) * | 1989-09-14 | 1991-03-28 | Bosch Gmbh Robert | Transformationscodierungssystem |
-
1992
- 1992-03-23 DE DE4209382A patent/DE4209382C1/de not_active Expired - Lifetime
-
1993
- 1993-02-25 EP EP93905148A patent/EP0632940B1/de not_active Expired - Lifetime
- 1993-02-25 AT AT93905148T patent/ATE197105T1/de active
- 1993-02-25 AU AU36254/93A patent/AU670068B2/en not_active Expired
- 1993-02-25 WO PCT/DE1993/000177 patent/WO1993019536A1/de active IP Right Grant
- 1993-02-25 DE DE59310119T patent/DE59310119D1/de not_active Expired - Lifetime
- 1993-02-25 JP JP5516152A patent/JPH07508375A/ja active Pending
- 1993-02-25 CA CA2131806A patent/CA2131806A1/en not_active Abandoned
-
1994
- 1994-09-22 KR KR1019940703290A patent/KR950701161A/ko not_active Application Discontinuation
- 1994-09-22 NO NO943520A patent/NO943520D0/no unknown
Also Published As
| Publication number | Publication date |
|---|---|
| KR950701161A (ko) | 1995-02-20 |
| DE59310119D1 (de) | 2000-11-23 |
| AU3625493A (en) | 1993-10-21 |
| ATE197105T1 (de) | 2000-11-15 |
| JPH07508375A (ja) | 1995-09-14 |
| EP0632940A1 (de) | 1995-01-11 |
| NO943520D0 (no) | 1994-09-22 |
| DE4209382C1 (no) | 1993-03-18 |
| AU670068B2 (en) | 1996-07-04 |
| WO1993019536A1 (de) | 1993-09-30 |
| CA2131806A1 (en) | 1993-09-30 |
| EP0632940B1 (de) | 2000-10-18 |
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