DE69623749D1 - Eingabe eines Rausch-weissenden Signals in einem bei der Wandlung digitaler Audiosignale angewandten Sigma-Delta-Modulator - Google Patents
Eingabe eines Rausch-weissenden Signals in einem bei der Wandlung digitaler Audiosignale angewandten Sigma-Delta-ModulatorInfo
- Publication number
- DE69623749D1 DE69623749D1 DE69623749T DE69623749T DE69623749D1 DE 69623749 D1 DE69623749 D1 DE 69623749D1 DE 69623749 T DE69623749 T DE 69623749T DE 69623749 T DE69623749 T DE 69623749T DE 69623749 D1 DE69623749 D1 DE 69623749D1
- Authority
- DE
- Germany
- Prior art keywords
- sigma
- noise
- input
- audio signals
- digital audio
- 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.)
- Expired - Lifetime
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
- H03M7/3004—Digital delta-sigma modulation
- H03M7/3006—Compensating for, or preventing of, undesired influence of physical parameters
- H03M7/3008—Compensating for, or preventing of, undesired influence of physical parameters by averaging out the errors, e.g. using dither
-
- 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
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/302—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution
- H03M7/3024—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only
- H03M7/3028—Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having one quantiser only the quantiser being a single bit one
-
- 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
- H03M7/3015—Structural details of digital delta-sigma modulators
- H03M7/3031—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path
- H03M7/3042—Structural details of digital delta-sigma modulators characterised by the order of the loop filter, e.g. having a first order loop filter in the feedforward path the modulator being of the error feedback type, i.e. having loop filter stages in the feedback path only
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96830081A EP0792024B1 (de) | 1996-02-23 | 1996-02-23 | Eingabe eines Rausch-weissenden Signals in einem bei der Wandlung digitaler Audiosignale angewandten Sigma-Delta-Modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69623749D1 true DE69623749D1 (de) | 2002-10-24 |
Family
ID=8225817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69623749T Expired - Lifetime DE69623749D1 (de) | 1996-02-23 | 1996-02-23 | Eingabe eines Rausch-weissenden Signals in einem bei der Wandlung digitaler Audiosignale angewandten Sigma-Delta-Modulator |
Country Status (3)
Country | Link |
---|---|
US (1) | US5818376A (de) |
EP (1) | EP0792024B1 (de) |
DE (1) | DE69623749D1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6326911B1 (en) * | 1997-11-19 | 2001-12-04 | Texas Instruments Incorporated | Method and apparatus for dithering idle channel tones in delta-sigma analog-to-digital converters |
US7868798B2 (en) * | 2009-03-31 | 2011-01-11 | Lsi Corporation | Methods and apparatus for whitening quantization noise in a delta-sigma modulator using dither signal |
WO2018109992A1 (ja) * | 2016-12-14 | 2018-06-21 | ソニーセミコンダクタソリューションズ株式会社 | デルタシグマ変調器、電子装置、および、デルタシグマ変調器の制御方法 |
US11158942B1 (en) | 2019-10-03 | 2021-10-26 | Epirus, Inc. | Apparatus and method for providing probabilistic additive gain, calibration, and linearization in a phased array using single bit sources |
CN113872604A (zh) * | 2021-09-26 | 2021-12-31 | 南京邮电大学 | 一种可降低分数杂散和高频量化噪声的σ-δ调制器 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3147409A1 (de) * | 1981-11-30 | 1983-06-01 | Siemens AG, 1000 Berlin und 8000 München | Verfahren und anordnung zur a/d-wandlung |
JP3012887B2 (ja) * | 1989-03-13 | 2000-02-28 | 日本テキサス・インスツルメンツ株式会社 | 信号変換装置 |
US5144308A (en) * | 1991-05-21 | 1992-09-01 | At&T Bell Laboratories | Idle channel tone and periodic noise suppression for sigma-delta modulators using high-level dither |
JP2994115B2 (ja) * | 1991-10-08 | 1999-12-27 | 日本電気アイシーマイコンシステム株式会社 | ノイズシェーパ回路 |
US5424739A (en) * | 1993-12-21 | 1995-06-13 | At&T Corp. | Device and method for digitally shaping the quantization noise of an N-bit digital signal, such as for digital-to-analog conversion |
-
1996
- 1996-02-23 EP EP96830081A patent/EP0792024B1/de not_active Expired - Lifetime
- 1996-02-23 DE DE69623749T patent/DE69623749D1/de not_active Expired - Lifetime
-
1997
- 1997-02-13 US US08/798,737 patent/US5818376A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5818376A (en) | 1998-10-06 |
EP0792024B1 (de) | 2002-09-18 |
EP0792024A1 (de) | 1997-08-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |