SE323721B - - Google Patents

Info

Publication number
SE323721B
SE323721B SE4042/66A SE404266A SE323721B SE 323721 B SE323721 B SE 323721B SE 4042/66 A SE4042/66 A SE 4042/66A SE 404266 A SE404266 A SE 404266A SE 323721 B SE323721 B SE 323721B
Authority
SE
Sweden
Prior art keywords
channel
unvoiced
voiced
pass filter
integrator circuit
Prior art date
Application number
SE4042/66A
Other languages
English (en)
Inventor
E Rothauser
E Paulus
Original Assignee
Ibm
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 by Ibm filed Critical Ibm
Publication of SE323721B publication Critical patent/SE323721B/xx

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Meter Arrangements (AREA)
  • Machine Translation (AREA)
SE4042/66A 1965-03-25 1966-03-25 SE323721B (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT275665A AT251656B (de) 1965-03-25 1965-03-25 Verfahren und Anordnungen zur Verbesserung der Sprachqualität in Vocodersystemen

Publications (1)

Publication Number Publication Date
SE323721B true SE323721B (xx) 1970-05-11

Family

ID=3539787

Family Applications (1)

Application Number Title Priority Date Filing Date
SE4042/66A SE323721B (xx) 1965-03-25 1966-03-25

Country Status (10)

Country Link
US (1) US3431355A (xx)
AT (1) AT251656B (xx)
BE (1) BE677136A (xx)
CH (1) CH443413A (xx)
DE (1) DE1276740B (xx)
ES (1) ES324621A1 (xx)
FR (1) FR1471628A (xx)
GB (1) GB1073203A (xx)
NL (1) NL146672B (xx)
SE (1) SE323721B (xx)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL84948A0 (en) * 1987-12-25 1988-06-30 D S P Group Israel Ltd Noise reduction system
DE69317802T2 (de) * 1992-01-21 1998-10-22 Koninkl Philips Electronics Nv Verfahren und Vorrichtung für Tonverbesserung unter Verwendung von Hüllung von multibandpassfiltrierten Signalen in Kammfiltern
US5768473A (en) * 1995-01-30 1998-06-16 Noise Cancellation Technologies, Inc. Adaptive speech filter
US6108610A (en) * 1998-10-13 2000-08-22 Noise Cancellation Technologies, Inc. Method and system for updating noise estimates during pauses in an information signal

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3012098A (en) * 1941-11-22 1961-12-05 Bell Telephone Labor Inc Telephone privacy
US2810787A (en) * 1952-05-22 1957-10-22 Itt Compressed frequency communication system
US3102928A (en) * 1960-12-23 1963-09-03 Bell Telephone Labor Inc Vocoder excitation generator
US3261916A (en) * 1962-11-16 1966-07-19 Ibm Adjustable recognition system

Also Published As

Publication number Publication date
NL146672B (nl) 1975-07-15
BE677136A (fr) 1966-07-18
FR1471628A (fr) 1967-03-03
CH443413A (de) 1967-09-15
ES324621A1 (es) 1967-02-01
DE1276740B (de) 1968-09-05
AT251656B (de) 1967-01-10
US3431355A (en) 1969-03-04
GB1073203A (en) 1967-06-21
NL6602974A (xx) 1966-09-26

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