EP0609300A1 - Process for transmitting or storing over disturbed channels a digitalized, encoded audio signal composed of a series of information blocks. - Google Patents
Process for transmitting or storing over disturbed channels a digitalized, encoded audio signal composed of a series of information blocks.Info
- Publication number
- EP0609300A1 EP0609300A1 EP92921545A EP92921545A EP0609300A1 EP 0609300 A1 EP0609300 A1 EP 0609300A1 EP 92921545 A EP92921545 A EP 92921545A EP 92921545 A EP92921545 A EP 92921545A EP 0609300 A1 EP0609300 A1 EP 0609300A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- information
- units
- encoded
- error protection
- audio signal
- 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
-
- 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. MP3 (MPEG-1 Audio Layer 3)
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/07—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information characterised by processes or methods for the generation
Definitions
- the invention relates to a ner driving according to the preamble of claim 1.
- a ner driving is known from the earlier patent application P 41 11 131.1.
- bit-saving source codes are usually used before the channel coding, which are based on a reduction in redundancy and irrelevance.
- the digitally sampled audio signal is processed using a filter bank
- sampled values 25 subband samples and / or converted to spectral samples using a frequency domain transform.
- additional and control information such as, for example, scale factors, scale factor selection information and bit allocation information
- Binary digits within an information block produce a different subjective interference effect on the listener.
- the disruption of a bit assignment in the radio channel can briefly lead to a complete failure on the playback side and thus to a muting of the audio signal of a certain duration.
- This control information must therefore be protected considerably more than the encoded samples.
- the listener can only perceive a bit error of a small binary position of the encoded sample with difficulty and sometimes even not at all.
- the object of the invention is to provide, in a method of the type mentioned at the outset, a channel coding which is optimized with regard to minimal subjective interference, minimum data rate and maximum error protection.
- the invention is based on the consideration of using the different meaning of the information units within each information block for a continuously graduated, variable error protection in such a way that certain interference patterns result from transmission disturbances, which can be determined by suitable ones
- Fig. 1 is a schematic representation of a in the invention
- Method used information block which consists of a sequence of nine information units with different error protection
- Fig. 2 is a schematic representation similar to that in Fig. 1 for a alternative embodiment
- FIG. 3 shows a schematic representation of the two channels of a stereophonic audio signal which is channel-coded according to the inventive method according to FIG. 2 after channel decoding.
- a sub-band method is used as the source coding method, in which the frequency band of the digitized audio signal is split into a plurality of sub-bands. Each subband is assigned to one of six subband groups. The bit allocation and thus data reduction of the sample values of each subband is carried out according to psychoacoustic aspects (monitoring threshold calculation). The peak value of the amount of these samples is determined in each sub-band for a certain number of consecutive samples and is quantified as a so-called "scale factor" and recorded together with the data-reduced ones
- Such a data-reduced, channel-coded audio signal 1 is shown schematically in the figure and consists of a large number of successive information blocks 10.
- the information blocks 10 are preferably of the same length and each comprise a sequence of nine information units 11 to 19 in the example shown.
- the nine information units 11 to 19 contain the following information in accordance with the source coding scheme under consideration: Unit 11 bit allocation information
- Unit 12 scale factor selection information
- the individual information units 11 to 19 are assigned a varying bit error protection 21 to 29 during the channel coding.
- the bit allocation information 11 and the scale factor selection information 12 require a high level of error protection 21 and 22, respectively, since bit errors within these information units can lead to a complete destruction of the audio signal at the output of the source decoder. Since disrupted scale factors 13 subjectively are extremely disruptive, they also require a relatively high level of error protection 23.
- Subband groups No. 1 to No. 6, which are shown as information units 14 to 19, are treated differently with regard to their error protection 24 to 29.
- the subband samples of the subbands of the lower frequency range are in the information unit 14, those of the highest frequency range to be transmitted are in the information unit 19.
- FIG. 2 An application of this better error detection is shown in FIG. 2 using a two-channel, stereophonic audio signal. In each of the two channels No. 1 and No. 2, three successive information blocks 110, 120, 130 and 210, 220, 230 are illustrated. Each of these blocks, as shown for block 10 in FIG. 1, consists of nine information units.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4135070A DE4135070C1 (en) | 1991-10-24 | 1991-10-24 | |
DE4135070 | 1991-10-24 | ||
PCT/EP1992/002401 WO1993008656A1 (en) | 1991-10-24 | 1992-10-20 | Process for transmitting or storing over disturbed channels a digitalized, encoded audio signal composed of a series of information blocks |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0609300A1 true EP0609300A1 (en) | 1994-08-10 |
EP0609300B1 EP0609300B1 (en) | 1996-09-11 |
Family
ID=6443299
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92921545A Expired - Lifetime EP0609300B1 (en) | 1991-10-24 | 1992-10-20 | Process for transmitting or storing over disturbed channels a digitalized, encoded audio signal composed of a series of information blocks |
Country Status (9)
Country | Link |
---|---|
US (1) | US5440584A (en) |
EP (1) | EP0609300B1 (en) |
AT (1) | ATE142828T1 (en) |
AU (1) | AU2769192A (en) |
CA (1) | CA2122011C (en) |
DE (2) | DE4135070C1 (en) |
DK (1) | DK0609300T3 (en) |
ES (1) | ES2090697T3 (en) |
WO (1) | WO1993008656A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998048531A1 (en) * | 1997-04-23 | 1998-10-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for masking defects in a stream of audio data |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4202140A1 (en) * | 1992-01-27 | 1993-07-29 | Thomson Brandt Gmbh | Digital audio signal transmission using sub-band coding - inserting extra fault protection signal, or fault protection bit into data frame |
US5642437A (en) * | 1992-02-22 | 1997-06-24 | Texas Instruments Incorporated | System decoder circuit with temporary bit storage and method of operation |
US5729556A (en) * | 1993-02-22 | 1998-03-17 | Texas Instruments | System decoder circuit with temporary bit storage and method of operation |
DE4327588A1 (en) * | 1993-08-17 | 1995-02-23 | Thomson Brandt Gmbh | Method for transmitting or demodulating a digital signal and a demodulator for decoding this signal |
DE4335305A1 (en) * | 1993-10-16 | 1995-04-20 | Philips Patentverwaltung | Method and circuit arrangement for transmitting voice signals |
CA2163371C (en) * | 1994-04-01 | 2005-09-20 | Kyoya Tsutsui | Information encoding method and apparatus, information decoding method and apparatus, information transmission method, and information recording medium |
DE4417993A1 (en) * | 1994-05-21 | 1995-12-07 | Bosch Gmbh Robert | Method for transmitting digital audio signals and device for transmitting digital audio signals |
US5617541A (en) * | 1994-12-21 | 1997-04-01 | International Computer Science Institute | System for packetizing data encoded corresponding to priority levels where reconstructed data corresponds to fractionalized priority level and received fractionalized packets |
US6775652B1 (en) | 1998-06-30 | 2004-08-10 | At&T Corp. | Speech recognition over lossy transmission systems |
TR200200680T1 (en) * | 2000-07-17 | 2002-09-23 | Koninklijke Philips Electronics N. V. | Signal coding. |
US7425618B2 (en) | 2002-06-14 | 2008-09-16 | Medimmune, Inc. | Stabilized anti-respiratory syncytial virus (RSV) antibody formulations |
US7132100B2 (en) | 2002-06-14 | 2006-11-07 | Medimmune, Inc. | Stabilized liquid anti-RSV antibody formulations |
EP2363025A1 (en) | 2003-03-27 | 2011-09-07 | PTC Therapeutics, Inc. | Targeting enzymes of the TRNA splicing pathway for identification of anti-fungal and/or anti-proliferative molecules |
KR20120035234A (en) | 2003-04-11 | 2012-04-13 | 메디뮨 엘엘씨 | Recombinant il-9 antibodies and uses thereof |
CA2562771C (en) | 2004-04-12 | 2013-04-09 | Medimmune, Inc. | Anti-il-9 antibody formulations and uses thereof |
US7351739B2 (en) | 2004-04-30 | 2008-04-01 | Wellgen, Inc. | Bioactive compounds and methods of uses thereof |
ES2694123T3 (en) | 2004-06-01 | 2018-12-18 | Icahn School Of Medicine At Mount Sinai | Swine influenza virus modified by genetic engineering and uses thereof |
AU2005299355A1 (en) | 2004-10-27 | 2006-05-04 | Medimmune, Llc | Modulation of antibody specificity by tailoring the affinity to cognate antigens |
EP1999148B8 (en) | 2006-03-06 | 2014-03-05 | Medlmmune, LLC | Humanized anti-cd22 antibodies and their use in treatment of oncology, transplantation and autoimmune disease |
EP2703011A3 (en) | 2007-05-07 | 2014-03-26 | MedImmune, LLC | Anti-icos antibodies and their use in treatment of oncology, transplantation and autoimmune disease |
NZ599338A (en) | 2007-06-27 | 2013-11-29 | Marinepolymer Tech Inc | Complexes of il-15 and il-15ralpha and uses thereof |
US20110293605A1 (en) | 2008-11-12 | 2011-12-01 | Hasige Sathish | Antibody formulation |
WO2011020024A2 (en) | 2009-08-13 | 2011-02-17 | The Johns Hopkins University | Methods of modulating immune function |
WO2014047232A2 (en) | 2012-09-21 | 2014-03-27 | Cornell University | C-rel inhibitors and uses thereof |
AU2013334610B2 (en) | 2012-10-24 | 2018-09-13 | Novartis Ag | IL-15R alpha forms, cells expressing IL-15R alpha forms, and therapeutic uses of IL-15R alpha and IL-15/IL-15R alpha complexes |
ES2811974T3 (en) | 2014-07-29 | 2021-03-15 | Novartis Ag | Dose escalation regimens of il-15 and il-15ralpha heterodimer for treating conditions |
US10960086B2 (en) | 2017-12-28 | 2021-03-30 | Augusta University Research Institute, Inc. | Aptamer compositions and methods of use thereof |
CA3090807A1 (en) | 2018-02-21 | 2019-08-29 | AI Therapeutics, Inc. | Combination therapy with apilimod and glutamatergic agents |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3374109D1 (en) * | 1983-10-28 | 1987-11-19 | Ibm | Method of recovering lost information in a digital speech transmission system, and transmission system using said method |
EP0205667B1 (en) * | 1985-06-14 | 1990-02-14 | Koninklijke Philips Electronics N.V. | System for transmitting words that are protected by a combination of a block code and a convolution code, transmitter device for use in such system and receiver for use in such system |
DE3805169A1 (en) * | 1988-02-19 | 1989-08-31 | Inst Rundfunktechnik Gmbh | Method for transmitting a digitally coded audio signal |
US5010553A (en) * | 1988-12-05 | 1991-04-23 | Compuquest, Inc. | High speed, error-free data transmission system and method |
US5164963A (en) * | 1990-11-07 | 1992-11-17 | At&T Bell Laboratories | Coding for digital transmission |
US5105442A (en) * | 1990-11-07 | 1992-04-14 | At&T Bell Laboratories | Coded modulation with unequal error protection |
DE4111131C2 (en) * | 1991-04-06 | 2001-08-23 | Inst Rundfunktechnik Gmbh | Method of transmitting digitized audio signals |
US5289501A (en) * | 1991-11-26 | 1994-02-22 | At&T Bell Laboratories | Coded modulation with unequal error protection for fading channels |
-
1991
- 1991-10-24 DE DE4135070A patent/DE4135070C1/de not_active Expired - Fee Related
-
1992
- 1992-10-20 DK DK92921545.7T patent/DK0609300T3/en active
- 1992-10-20 AU AU27691/92A patent/AU2769192A/en not_active Abandoned
- 1992-10-20 ES ES92921545T patent/ES2090697T3/en not_active Expired - Lifetime
- 1992-10-20 CA CA002122011A patent/CA2122011C/en not_active Expired - Lifetime
- 1992-10-20 EP EP92921545A patent/EP0609300B1/en not_active Expired - Lifetime
- 1992-10-20 DE DE59207139T patent/DE59207139D1/en not_active Expired - Lifetime
- 1992-10-20 AT AT92921545T patent/ATE142828T1/en active
- 1992-10-20 US US08/211,825 patent/US5440584A/en not_active Expired - Lifetime
- 1992-10-20 WO PCT/EP1992/002401 patent/WO1993008656A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9308656A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998048531A1 (en) * | 1997-04-23 | 1998-10-29 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for masking defects in a stream of audio data |
US6421802B1 (en) | 1997-04-23 | 2002-07-16 | Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. | Method for masking defects in a stream of audio data |
Also Published As
Publication number | Publication date |
---|---|
DE4135070C1 (en) | 1993-05-19 |
AU2769192A (en) | 1993-05-21 |
US5440584A (en) | 1995-08-08 |
EP0609300B1 (en) | 1996-09-11 |
ES2090697T3 (en) | 1996-10-16 |
ATE142828T1 (en) | 1996-09-15 |
CA2122011A1 (en) | 1993-04-29 |
DK0609300T3 (en) | 1996-11-25 |
DE59207139D1 (en) | 1996-10-17 |
CA2122011C (en) | 1999-06-08 |
WO1993008656A1 (en) | 1993-04-29 |
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