SE8006850L - LJUDSYNTETISATOR - Google Patents

LJUDSYNTETISATOR

Info

Publication number
SE8006850L
SE8006850L SE8006850A SE8006850A SE8006850L SE 8006850 L SE8006850 L SE 8006850L SE 8006850 A SE8006850 A SE 8006850A SE 8006850 A SE8006850 A SE 8006850A SE 8006850 L SE8006850 L SE 8006850L
Authority
SE
Sweden
Prior art keywords
sound
output
fundamental period
filter section
order
Prior art date
Application number
SE8006850A
Other languages
Swedish (sv)
Other versions
SE444730B (en
Inventor
F Itakura
N Sugamura
Original Assignee
Nippon Telegraph & Telephone
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
Priority claimed from JP54128365A external-priority patent/JPS5853352B2/en
Priority claimed from JP12836679A external-priority patent/JPS5651116A/en
Application filed by Nippon Telegraph & Telephone filed Critical Nippon Telegraph & Telephone
Publication of SE8006850L publication Critical patent/SE8006850L/en
Publication of SE444730B publication Critical patent/SE444730B/en

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/04—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 predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L13/00—Speech synthesis; Text to speech systems
    • G10L13/02—Methods for producing synthetic speech; Speech synthesisers
    • G10L13/04—Details of speech synthesis systems, e.g. synthesiser structure or memory management
    • G10L13/047—Architecture of speech synthesisers

Abstract

A sound synthesizer in which pulses of a period indicated by a fundamental period parameter are produced by a fundamental period sound source, the output from the fundamental period sound source or the output from a noise source is selected depending on whether a sound to be synthesized is a voiced or unvoiced sound, and the selected pulses are applied to a sound synthesis filter section 16 to synthesize the sound. The sound synthesis filter section is composed of a second- order filter means (57-61, 65-69) which serves as a second- order filter having the zero on a unit circle in a complex plane, means for cascade-operating second-order filter means of different coefficients, and feedback means 41, 42 for feeding back the output from the synthesis filter section 16 to the input side through two kinds of such cascade-operating means, and coefficients of the second-order filters are controlled by control parameters. <IMAGE>
SE8006850A 1979-10-03 1980-10-01 LJUDSYNTETISATOR SE444730B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP54128365A JPS5853352B2 (en) 1979-10-03 1979-10-03 speech synthesizer
JP12836679A JPS5651116A (en) 1979-10-03 1979-10-03 All pole type digital filter

Publications (2)

Publication Number Publication Date
SE8006850L true SE8006850L (en) 1981-04-04
SE444730B SE444730B (en) 1986-04-28

Family

ID=26464060

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8006850A SE444730B (en) 1979-10-03 1980-10-01 LJUDSYNTETISATOR

Country Status (5)

Country Link
DE (2) DE3050742C2 (en)
FR (1) FR2466826A1 (en)
GB (2) GB2131659B (en)
NL (1) NL189320C (en)
SE (1) SE444730B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814898A (en) * 1981-07-20 1983-01-27 ヤマハ株式会社 Reverberation adding apparatus
US4660163A (en) * 1983-01-17 1987-04-21 OKI Electric Co. Ltd Adaptive digital filter
US4731835A (en) * 1984-11-19 1988-03-15 Nippon Gakki Seizo Kabushiki Kaisha Reverberation tone generating apparatus
BE1007428A3 (en) * 1993-08-02 1995-06-13 Philips Electronics Nv Transmission of reconstruction of missing signal samples.
US5704001A (en) * 1994-08-04 1997-12-30 Qualcomm Incorporated Sensitivity weighted vector quantization of line spectral pair frequencies
JPH09230896A (en) * 1996-02-28 1997-09-05 Sony Corp Speech synthesis device
EP3471095B1 (en) * 2014-04-25 2024-05-01 Ntt Docomo, Inc. Linear prediction coefficient conversion device and linear prediction coefficient conversion method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3624302A (en) * 1969-10-29 1971-11-30 Bell Telephone Labor Inc Speech analysis and synthesis by the use of the linear prediction of a speech wave
FR2199427A5 (en) * 1972-09-12 1974-04-05 Ibm France
GB1603993A (en) * 1977-06-17 1981-12-02 Texas Instruments Inc Lattice filter for waveform or speech synthesis circuits using digital logic

Also Published As

Publication number Publication date
GB8318893D0 (en) 1983-08-17
DE3037276C2 (en) 1985-08-01
NL189320B (en) 1992-10-01
GB2131659B (en) 1984-12-12
DE3050742C2 (en) 1987-01-15
GB2131659A (en) 1984-06-20
DE3037276A1 (en) 1981-04-09
GB2059726A (en) 1981-04-23
FR2466826B1 (en) 1984-09-14
NL8005449A (en) 1981-04-07
GB2059726B (en) 1984-06-27
NL189320C (en) 1993-03-01
FR2466826A1 (en) 1981-04-10
SE444730B (en) 1986-04-28

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