DK162911B - Adaptivt stoejreduktionssystem med a/d- og d/a-pulsomsaettere - Google Patents
Adaptivt stoejreduktionssystem med a/d- og d/a-pulsomsaettere Download PDFInfo
- Publication number
- DK162911B DK162911B DK200983A DK200983A DK162911B DK 162911 B DK162911 B DK 162911B DK 200983 A DK200983 A DK 200983A DK 200983 A DK200983 A DK 200983A DK 162911 B DK162911 B DK 162911B
- Authority
- DK
- Denmark
- Prior art keywords
- signal
- circuit
- converter
- digital
- frequency
- Prior art date
Links
- 230000003044 adaptive effect Effects 0.000 title claims description 24
- 238000001228 spectrum Methods 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 18
- 230000001419 dependent effect Effects 0.000 claims description 12
- 238000013139 quantization Methods 0.000 claims description 6
- 238000009499 grossing Methods 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 3
- 238000000034 method Methods 0.000 description 13
- 230000005236 sound signal Effects 0.000 description 9
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000009877 rendering Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/005—Combinations of two or more types of control, e.g. gain control and tone control of digital or coded signals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/025—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers frequency-dependent volume compression or expansion, e.g. multiple-band systems
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US37503782 | 1982-05-05 | ||
| US06/375,037 US4493091A (en) | 1982-05-05 | 1982-05-05 | Analog and digital signal apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK200983D0 DK200983D0 (da) | 1983-05-05 |
| DK200983A DK200983A (da) | 1983-11-06 |
| DK162911B true DK162911B (da) | 1991-12-23 |
Family
ID=23479245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK200983A DK162911B (da) | 1982-05-05 | 1983-05-05 | Adaptivt stoejreduktionssystem med a/d- og d/a-pulsomsaettere |
Country Status (13)
| Country | Link |
|---|---|
| US (1) | US4493091A (en, 2012) |
| JP (1) | JPS58218245A (en, 2012) |
| KR (1) | KR840004991A (en, 2012) |
| BE (1) | BE896674A (en, 2012) |
| BR (1) | BR8302311A (en, 2012) |
| CA (1) | CA1218157A (en, 2012) |
| CH (1) | CH666585A5 (en, 2012) |
| DE (1) | DE3315519A1 (en, 2012) |
| DK (1) | DK162911B (en, 2012) |
| ES (1) | ES522078A0 (en, 2012) |
| FR (1) | FR2526608B1 (en, 2012) |
| GB (1) | GB2121253B (en, 2012) |
| NL (1) | NL8301572A (en, 2012) |
Families Citing this family (53)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4569028A (en) * | 1983-06-24 | 1986-02-04 | Analogic Corporation | Adaptive digitizer circuit for information processing system |
| JPS60101769A (ja) * | 1983-11-09 | 1985-06-05 | Hitachi Ltd | 信号伝送装置 |
| US4674062A (en) * | 1984-04-20 | 1987-06-16 | General Electric Company | Apparatus and method to increase dynamic range of digital measurements |
| GB2160394B (en) * | 1984-05-02 | 1988-03-16 | Pioneer Electronic Corp | Noise reduction system |
| DE3440615C1 (de) * | 1984-11-07 | 1986-04-10 | Institut für Rundfunktechnik GmbH, 8000 München | Verfahren zum Übertragen und Speichern von Tonsignalen und Einrichtung zur Durchführung des Verfahrens |
| GB2172159A (en) * | 1985-03-07 | 1986-09-10 | Stc Plc | A/d converters |
| JPH0740685B2 (ja) * | 1986-07-23 | 1995-05-01 | 株式会社日立製作所 | 可聴音信号伝送システム |
| US4829299A (en) * | 1987-09-25 | 1989-05-09 | Dolby Laboratories Licensing Corporation | Adaptive-filter single-bit digital encoder and decoder and adaptation control circuit responsive to bit-stream loading |
| US5034743A (en) * | 1989-08-07 | 1991-07-23 | Flight Visions Incorporated | AC encoded signal to digital converter |
| JPH0379549U (en, 2012) * | 1989-12-05 | 1991-08-14 | ||
| SE465144B (sv) * | 1990-06-26 | 1991-07-29 | Ericsson Ge Mobile Communicat | Saett och anordning foer behandling av en analog signal |
| WO1992010037A1 (en) * | 1990-11-27 | 1992-06-11 | Jacobs Gordon M | Digital data converter |
| US5727023A (en) * | 1992-10-27 | 1998-03-10 | Ericsson Inc. | Apparatus for and method of speech digitizing |
| US5530722A (en) * | 1992-10-27 | 1996-06-25 | Ericsson Ge Mobile Communications Inc. | Quadrature modulator with integrated distributed RC filters |
| US5867537A (en) * | 1992-10-27 | 1999-02-02 | Ericsson Inc. | Balanced tranversal I,Q filters for quadrature modulators |
| US5745523A (en) * | 1992-10-27 | 1998-04-28 | Ericsson Inc. | Multi-mode signal processing |
| US5608713A (en) * | 1994-02-09 | 1997-03-04 | Sony Corporation | Bit allocation of digital audio signal blocks by non-linear processing |
| US5614903A (en) * | 1995-08-29 | 1997-03-25 | Trw Inc. | Distortion suppressor for digital-to-analog converter |
| FR2832271A1 (fr) * | 2001-11-13 | 2003-05-16 | Koninkl Philips Electronics Nv | Tuner comprenant un convertisseur de tension |
| US7027982B2 (en) * | 2001-12-14 | 2006-04-11 | Microsoft Corporation | Quality and rate control strategy for digital audio |
| US6980695B2 (en) * | 2002-06-28 | 2005-12-27 | Microsoft Corporation | Rate allocation for mixed content video |
| US7383180B2 (en) * | 2003-07-18 | 2008-06-03 | Microsoft Corporation | Constant bitrate media encoding techniques |
| US7343291B2 (en) | 2003-07-18 | 2008-03-11 | Microsoft Corporation | Multi-pass variable bitrate media encoding |
| US8254455B2 (en) * | 2007-06-30 | 2012-08-28 | Microsoft Corporation | Computing collocated macroblock information for direct mode macroblocks |
| US8325800B2 (en) | 2008-05-07 | 2012-12-04 | Microsoft Corporation | Encoding streaming media as a high bit rate layer, a low bit rate layer, and one or more intermediate bit rate layers |
| US8379851B2 (en) * | 2008-05-12 | 2013-02-19 | Microsoft Corporation | Optimized client side rate control and indexed file layout for streaming media |
| US7860996B2 (en) * | 2008-05-30 | 2010-12-28 | Microsoft Corporation | Media streaming with seamless ad insertion |
| US8265140B2 (en) * | 2008-09-30 | 2012-09-11 | Microsoft Corporation | Fine-grained client-side control of scalable media delivery |
| US8189666B2 (en) * | 2009-02-02 | 2012-05-29 | Microsoft Corporation | Local picture identifier and computation of co-located information |
| US9172960B1 (en) * | 2010-09-23 | 2015-10-27 | Qualcomm Technologies, Inc. | Quantization based on statistics and threshold of luminanceand chrominance |
| US9831843B1 (en) | 2013-09-05 | 2017-11-28 | Cirrus Logic, Inc. | Opportunistic playback state changes for audio devices |
| US9774342B1 (en) | 2014-03-05 | 2017-09-26 | Cirrus Logic, Inc. | Multi-path analog front end and analog-to-digital converter for a signal processing system |
| US10284217B1 (en) | 2014-03-05 | 2019-05-07 | Cirrus Logic, Inc. | Multi-path analog front end and analog-to-digital converter for a signal processing system |
| US9306588B2 (en) | 2014-04-14 | 2016-04-05 | Cirrus Logic, Inc. | Switchable secondary playback path |
| US10785568B2 (en) | 2014-06-26 | 2020-09-22 | Cirrus Logic, Inc. | Reducing audio artifacts in a system for enhancing dynamic range of audio signal path |
| US9596537B2 (en) | 2014-09-11 | 2017-03-14 | Cirrus Logic, Inc. | Systems and methods for reduction of audio artifacts in an audio system with dynamic range enhancement |
| US9503027B2 (en) | 2014-10-27 | 2016-11-22 | Cirrus Logic, Inc. | Systems and methods for dynamic range enhancement using an open-loop modulator in parallel with a closed-loop modulator |
| US9959856B2 (en) | 2015-06-15 | 2018-05-01 | Cirrus Logic, Inc. | Systems and methods for reducing artifacts and improving performance of a multi-path analog-to-digital converter |
| US9955254B2 (en) | 2015-11-25 | 2018-04-24 | Cirrus Logic, Inc. | Systems and methods for preventing distortion due to supply-based modulation index changes in an audio playback system |
| US9543975B1 (en) | 2015-12-29 | 2017-01-10 | Cirrus Logic, Inc. | Multi-path analog front end and analog-to-digital converter for a signal processing system with low-pass filter between paths |
| US9880802B2 (en) | 2016-01-21 | 2018-01-30 | Cirrus Logic, Inc. | Systems and methods for reducing audio artifacts from switching between paths of a multi-path signal processing system |
| US9998826B2 (en) | 2016-06-28 | 2018-06-12 | Cirrus Logic, Inc. | Optimization of performance and power in audio system |
| US10545561B2 (en) | 2016-08-10 | 2020-01-28 | Cirrus Logic, Inc. | Multi-path digitation based on input signal fidelity and output requirements |
| US10263630B2 (en) | 2016-08-11 | 2019-04-16 | Cirrus Logic, Inc. | Multi-path analog front end with adaptive path |
| US9813814B1 (en) | 2016-08-23 | 2017-11-07 | Cirrus Logic, Inc. | Enhancing dynamic range based on spectral content of signal |
| US9762255B1 (en) | 2016-09-19 | 2017-09-12 | Cirrus Logic, Inc. | Reconfiguring paths in a multiple path analog-to-digital converter |
| US9780800B1 (en) | 2016-09-19 | 2017-10-03 | Cirrus Logic, Inc. | Matching paths in a multiple path analog-to-digital converter |
| US9929703B1 (en) | 2016-09-27 | 2018-03-27 | Cirrus Logic, Inc. | Amplifier with configurable final output stage |
| US9967665B2 (en) | 2016-10-05 | 2018-05-08 | Cirrus Logic, Inc. | Adaptation of dynamic range enhancement based on noise floor of signal |
| US10321230B2 (en) | 2017-04-07 | 2019-06-11 | Cirrus Logic, Inc. | Switching in an audio system with multiple playback paths |
| US10008992B1 (en) | 2017-04-14 | 2018-06-26 | Cirrus Logic, Inc. | Switching in amplifier with configurable final output stage |
| US9917557B1 (en) | 2017-04-17 | 2018-03-13 | Cirrus Logic, Inc. | Calibration for amplifier with configurable final output stage |
| US10755722B2 (en) * | 2018-08-29 | 2020-08-25 | Guoguang Electric Company Limited | Multiband audio signal dynamic range compression with overshoot suppression |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US28426A (en) * | 1860-05-22 | Shortening tires | ||
| US3026375A (en) * | 1958-05-09 | 1962-03-20 | Bell Telephone Labor Inc | Transmission of quantized signals |
| US3903485A (en) * | 1968-01-10 | 1975-09-02 | Ray Milton Dolby | Compressors, expanders and noise reduction systems |
| US3846719A (en) * | 1973-09-13 | 1974-11-05 | Dolby Laboratories Inc | Noise reduction systems |
| US3757254A (en) * | 1970-06-05 | 1973-09-04 | Victor Co Ltd | N system noise reduction system and apparatus using a compression and expansio |
| GB1367002A (en) * | 1971-04-06 | 1974-09-18 | Victor Company Of Japan | Compression and/or expansion system and circuit |
| US3729678A (en) * | 1971-07-20 | 1973-04-24 | Philips Corp | Pcm system including a pulse pattern analyzer |
| US4008435A (en) * | 1972-05-30 | 1977-02-15 | Nippon Electric Company, Ltd. | Delta modulation encoder |
| US3934190A (en) * | 1972-09-15 | 1976-01-20 | Dolby Laboratories, Inc. | Signal compressors and expanders |
| JPS5543288B2 (en, 2012) * | 1974-04-22 | 1980-11-05 | ||
| JPS51127608A (en) * | 1975-04-30 | 1976-11-06 | Victor Co Of Japan Ltd | Signal transmitting unit |
| JPS54124663A (en) * | 1978-03-20 | 1979-09-27 | Nippon Telegr & Teleph Corp <Ntt> | Pcm modulation/demodulation system |
| US4271332A (en) * | 1979-06-04 | 1981-06-02 | Anderson James C | Speech signal A/D converter using an instantaneously-variable bandwidth filter |
| JPS574492U (en, 2012) * | 1980-06-04 | 1982-01-11 | ||
| DE3029441A1 (de) * | 1980-08-02 | 1982-03-04 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Signaluebertragungsschaltung mit steuerbarem uebertragungsmass |
| JPS5752239A (en) * | 1980-09-09 | 1982-03-27 | Sony Corp | Noise reducing circuit |
-
1982
- 1982-05-05 US US06/375,037 patent/US4493091A/en not_active Expired - Fee Related
-
1983
- 1983-04-29 DE DE19833315519 patent/DE3315519A1/de active Granted
- 1983-05-04 GB GB08312217A patent/GB2121253B/en not_active Expired
- 1983-05-04 ES ES522078A patent/ES522078A0/es active Granted
- 1983-05-04 NL NL8301572A patent/NL8301572A/nl not_active Application Discontinuation
- 1983-05-04 CA CA000427428A patent/CA1218157A/en not_active Expired
- 1983-05-04 KR KR1019830001909A patent/KR840004991A/ko not_active Ceased
- 1983-05-04 JP JP58077705A patent/JPS58218245A/ja active Pending
- 1983-05-04 BR BR8302311A patent/BR8302311A/pt not_active IP Right Cessation
- 1983-05-05 DK DK200983A patent/DK162911B/da not_active Application Discontinuation
- 1983-05-05 BE BE0/210710A patent/BE896674A/fr not_active IP Right Cessation
- 1983-05-05 FR FR8307528A patent/FR2526608B1/fr not_active Expired
- 1983-05-05 CH CH2456/83A patent/CH666585A5/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DK200983D0 (da) | 1983-05-05 |
| DE3315519A1 (de) | 1983-11-10 |
| KR840004991A (ko) | 1984-10-31 |
| GB2121253A (en) | 1983-12-14 |
| DK200983A (da) | 1983-11-06 |
| CA1218157A (en) | 1987-02-17 |
| BR8302311A (pt) | 1984-01-03 |
| JPS58218245A (ja) | 1983-12-19 |
| NL8301572A (nl) | 1983-12-01 |
| GB8312217D0 (en) | 1983-06-08 |
| DE3315519C2 (en, 2012) | 1991-11-07 |
| GB2121253B (en) | 1986-02-12 |
| CH666585A5 (de) | 1988-07-29 |
| FR2526608A1 (fr) | 1983-11-10 |
| ES8500530A1 (es) | 1984-10-01 |
| ES522078A0 (es) | 1984-10-01 |
| FR2526608B1 (fr) | 1989-01-13 |
| BE896674A (fr) | 1983-09-01 |
| US4493091A (en) | 1985-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PHB | Application deemed withdrawn due to non-payment or other reasons |