JPS563560B2 - - Google Patents

Info

Publication number
JPS563560B2
JPS563560B2 JP14788476A JP14788476A JPS563560B2 JP S563560 B2 JPS563560 B2 JP S563560B2 JP 14788476 A JP14788476 A JP 14788476A JP 14788476 A JP14788476 A JP 14788476A JP S563560 B2 JPS563560 B2 JP S563560B2
Authority
JP
Japan
Prior art keywords
subband
signal
digital
speech signal
subbands
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
Application number
JP14788476A
Other languages
English (en)
Other versions
JPS5296802A (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPS5296802A publication Critical patent/JPS5296802A/ja
Publication of JPS563560B2 publication Critical patent/JPS563560B2/ja
Granted legal-status Critical Current

Links

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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—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 for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
JP14788476A 1975-12-12 1976-12-10 Digital audio communication system Granted JPS5296802A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/640,218 US4048443A (en) 1975-12-12 1975-12-12 Digital speech communication system for minimizing quantizing noise

Publications (2)

Publication Number Publication Date
JPS5296802A JPS5296802A (en) 1977-08-15
JPS563560B2 true JPS563560B2 (ja) 1981-01-26

Family

ID=24567336

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14788476A Granted JPS5296802A (en) 1975-12-12 1976-12-10 Digital audio communication system

Country Status (6)

Country Link
US (1) US4048443A (ja)
JP (1) JPS5296802A (ja)
CA (1) CA1076703A (ja)
DE (1) DE2656044C2 (ja)
GB (1) GB1518448A (ja)
SE (1) SE7613468L (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0331972Y2 (ja) * 1984-04-03 1991-07-08

Families Citing this family (45)

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Publication number Priority date Publication date Assignee Title
US4315105A (en) * 1976-11-23 1982-02-09 Miller Iii Herman P Narrow band transmission system and method
FR2389277A1 (fr) * 1977-04-29 1978-11-24 Ibm France Procede de quantification a allocation dynamique du taux de bits disponible, et dispositif de mise en oeuvre dudit procede
NL7908213A (nl) * 1979-11-09 1981-06-01 Philips Nv Spraaksynthese inrichting met tenminste twee vervormingsketens.
US4825451A (en) * 1982-10-11 1989-04-25 Niravoice, Inc. Technique for transmission of voice communications and apparatus useful therein
DE3330399A1 (de) * 1982-10-11 1984-05-10 Nira Dr. Doar Yahud Schwartz Verfahren und einrichtung zum uebertragen von kommunikationen bzw. informationen
CA1253255A (en) * 1983-05-16 1989-04-25 Nec Corporation System for simultaneously coding and decoding a plurality of signals
US4600902A (en) * 1983-07-01 1986-07-15 Wegener Communications, Inc. Compandor noise reduction circuit
DE3435818C2 (de) * 1984-09-28 1986-11-20 Siemens AG, 1000 Berlin und 8000 München Verfahren zur Übertragung eines verschlüsselten analogen Sprachsignals
US4675863A (en) * 1985-03-20 1987-06-23 International Mobile Machines Corp. Subscriber RF telephone system for providing multiple speech and/or data signals simultaneously over either a single or a plurality of RF channels
JPS62234435A (ja) * 1986-04-04 1987-10-14 Kokusai Denshin Denwa Co Ltd <Kdd> 符号化音声の復号化方式
JPS6385700A (ja) * 1986-09-30 1988-04-16 沖電気工業株式会社 帯域分割型音声分析器
JPS6385699A (ja) * 1986-09-30 1988-04-16 沖電気工業株式会社 帯域分割型音声合成器
US4831624A (en) * 1987-06-04 1989-05-16 Motorola, Inc. Error detection method for sub-band coding
US4802171A (en) * 1987-06-04 1989-01-31 Motorola, Inc. Method for error correction in digitally encoded speech
US4805193A (en) * 1987-06-04 1989-02-14 Motorola, Inc. Protection of energy information in sub-band coding
US5742735A (en) * 1987-10-06 1998-04-21 Fraunhofer Gesellschaft Zur Forderung Der Angewanten Forschung E.V. Digital adaptive transformation coding method
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system
EP0339589A3 (en) * 1988-04-28 1992-01-02 Sharp Kabushiki Kaisha Orthogonal transform coding system for image data
US4979188A (en) * 1988-04-29 1990-12-18 Motorola, Inc. Spectrally efficient method for communicating an information signal
CA2014935C (en) * 1989-05-04 1996-02-06 James D. Johnston Perceptually-adapted image coding system
NL9000338A (nl) * 1989-06-02 1991-01-02 Koninkl Philips Electronics Nv Digitaal transmissiesysteem, zender en ontvanger te gebruiken in het transmissiesysteem en registratiedrager verkregen met de zender in de vorm van een optekeninrichting.
US5058138A (en) * 1990-01-16 1991-10-15 Pacesetter Electronics, Inc. Modular receiver for signals having multiple channels and multiple formats
US5367608A (en) * 1990-05-14 1994-11-22 U.S. Philips Corporation Transmitter, encoding system and method employing use of a bit allocation unit for subband coding a digital signal
DE4020656A1 (de) * 1990-06-29 1992-01-02 Thomson Brandt Gmbh Verfahren zur uebertragung eines signals
US5365553A (en) * 1990-11-30 1994-11-15 U.S. Philips Corporation Transmitter, encoding system and method employing use of a bit need determiner for subband coding a digital signal
DE4134420C1 (ja) * 1991-10-17 1992-12-03 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De
US5327520A (en) * 1992-06-04 1994-07-05 At&T Bell Laboratories Method of use of voice message coder/decoder
FR2697704B1 (fr) * 1992-10-29 1995-01-06 France Telecom Procédé et dispositif de segmentation en sous-bandes et de reconstruction d'un signal numérique, et dispositif correspondant.
CA2106440C (en) * 1992-11-30 1997-11-18 Jelena Kovacevic Method and apparatus for reducing correlated errors in subband coding systems with quantizers
US5412690A (en) * 1993-03-08 1995-05-02 Motorola, Inc. Method and apparatus for receiving electromagnetic radiation within a frequency band
US5392044A (en) * 1993-03-08 1995-02-21 Motorola, Inc. Method and apparatus for digitizing a wide frequency bandwidth signal
US5546383A (en) 1993-09-30 1996-08-13 Cooley; David M. Modularly clustered radiotelephone system
US5485515A (en) * 1993-12-29 1996-01-16 At&T Corp. Background noise compensation in a telephone network
US5526419A (en) * 1993-12-29 1996-06-11 At&T Corp. Background noise compensation in a telephone set
US5761636A (en) * 1994-03-09 1998-06-02 Motorola, Inc. Bit allocation method for improved audio quality perception using psychoacoustic parameters
US5646961A (en) * 1994-12-30 1997-07-08 Lucent Technologies Inc. Method for noise weighting filtering
US5822370A (en) * 1996-04-16 1998-10-13 Aura Systems, Inc. Compression/decompression for preservation of high fidelity speech quality at low bandwidth
US6195398B1 (en) * 1997-12-19 2001-02-27 Stmicroelectronics, Inc. Method and apparatus for coding and communicating data in noisy environment
EP1104101A3 (en) * 1999-11-26 2005-02-02 Matsushita Electric Industrial Co., Ltd. Digital signal sub-band separating / combining apparatus achieving band-separation and band-combining filtering processing with reduced amount of group delay
US6661880B1 (en) 2001-06-12 2003-12-09 3Com Corporation System and method for embedding digital information in a dial tone signal
US6657777B1 (en) * 2001-12-05 2003-12-02 Cisco Technology, Inc Interleaved lumped raman amplifier structure based on highly nonlinear fibers for densely spaced WDM channels
US7971225B2 (en) * 2002-02-08 2011-06-28 Finisar Corporation Bandpass component decimation and transmission of data in cable television digital return path
US6965859B2 (en) * 2003-02-28 2005-11-15 Xvd Corporation Method and apparatus for audio compression
MY180550A (en) 2009-01-16 2020-12-02 Dolby Int Ab Cross product enhanced harmonic transposition
US8891713B2 (en) * 2011-04-06 2014-11-18 Siemens Medical Solutions Usa, Inc. System for adaptive sampled medical signal interpolative reconstruction for use in patient monitoring

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949505A (en) * 1957-08-14 1960-08-16 Bell Telephone Labor Inc Reduced bandwith transmission system
US3471644A (en) * 1966-05-02 1969-10-07 Massachusetts Inst Technology Voice vocoding and transmitting system
US3674939A (en) * 1969-11-26 1972-07-04 Fred A Brooks Baseband pulse code modulation system
CA946514A (en) * 1970-06-05 1974-04-30 Guner S. Robinson Digital speech compression
DE2062681A1 (de) * 1970-12-19 1972-07-06 Licentia Gmbh Verfahren und Anordnung zur Sprachverschlüsselung mittels Bandverwürfelung
DE2239450C3 (de) * 1972-08-10 1975-03-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Nachrichtenübertragungssystem für Sprachsignale
DE2239414C3 (de) * 1972-08-10 1978-06-22 Siemens Ag, 1000 Berlin Und 8000 Muenchen Nachrichtenübertragungssystem für Sprachsignale
FR2238412A5 (ja) * 1973-07-20 1975-02-14 Trt Telecom Radio Electr
DE2359673C2 (de) * 1973-11-30 1982-05-27 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Verfahren zum Verschleiern des Informationsinhaltes von Frequenzbändern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0331972Y2 (ja) * 1984-04-03 1991-07-08

Also Published As

Publication number Publication date
GB1518448A (en) 1978-07-19
CA1076703A (en) 1980-04-29
US4048443A (en) 1977-09-13
SE7613468L (sv) 1977-06-13
DE2656044A1 (de) 1977-06-23
JPS5296802A (en) 1977-08-15
DE2656044C2 (de) 1982-09-30

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