ES470853A1 - Lattice filter for waveform or speech synthesis circuits using digital logic - Google Patents

Lattice filter for waveform or speech synthesis circuits using digital logic

Info

Publication number
ES470853A1
ES470853A1 ES470853A ES470853A ES470853A1 ES 470853 A1 ES470853 A1 ES 470853A1 ES 470853 A ES470853 A ES 470853A ES 470853 A ES470853 A ES 470853A ES 470853 A1 ES470853 A1 ES 470853A1
Authority
ES
Spain
Prior art keywords
filter
storing
waveform
speech synthesis
digital logic
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
ES470853A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Texas Instruments Inc
Original Assignee
Texas Instruments Inc
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 Texas Instruments Inc filed Critical Texas Instruments Inc
Publication of ES470853A1 publication Critical patent/ES470853A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure
    • H03H17/0285—Ladder or lattice filters
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • 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

Abstract

The digital filter comprises a memory (31) storing filter coefficients, a multiplier (30) multiplying internal data of the filter by the said filter coefficients, an adder/subtracter (33) adding the results of the multiplications to other data obtained in the filter, a delay circuit (34) connected up to the output of the adder/subtracter, a shift register (35) storing and retrieving at the requisite the time the data coming from the delay circuit, and an interlock output memory (36) storing a datum output by the filter. These various elements are interconnected with the aid of switches (37, 38) in order to perform the successive operations of multiplication and addition during a cycle. This filter, equivalent to a lattice filter, can be used in a voice synthesizer.
ES470853A 1977-06-17 1978-06-16 Lattice filter for waveform or speech synthesis circuits using digital logic Expired ES470853A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80746177A 1977-06-17 1977-06-17

Publications (1)

Publication Number Publication Date
ES470853A1 true ES470853A1 (en) 1979-10-01

Family

ID=25196423

Family Applications (3)

Application Number Title Priority Date Filing Date
ES470853A Expired ES470853A1 (en) 1977-06-17 1978-06-16 Lattice filter for waveform or speech synthesis circuits using digital logic
ES477929A Expired ES477929A1 (en) 1977-06-17 1979-02-21 Lattice filter for waveform or speech synthesis circuits using digital logic
ES477928A Expired ES477928A1 (en) 1977-06-17 1979-02-21 Lattice filter for waveform or speech synthesis circuits using digital logic

Family Applications After (2)

Application Number Title Priority Date Filing Date
ES477929A Expired ES477929A1 (en) 1977-06-17 1979-02-21 Lattice filter for waveform or speech synthesis circuits using digital logic
ES477928A Expired ES477928A1 (en) 1977-06-17 1979-02-21 Lattice filter for waveform or speech synthesis circuits using digital logic

Country Status (20)

Country Link
JP (1) JPS547838A (en)
AR (1) AR218313A1 (en)
AU (1) AU520897B2 (en)
BE (1) BE868205A (en)
BR (1) BR7803856A (en)
CA (1) CA1118104A (en)
CH (1) CH633922A5 (en)
CS (1) CS266303B2 (en)
DE (1) DE2826570A1 (en)
ES (3) ES470853A1 (en)
FR (1) FR2394933A1 (en)
GB (1) GB1603993A (en)
IL (1) IL54878A (en)
IT (1) IT1156831B (en)
MX (1) MX144810A (en)
NL (1) NL186425C (en)
PL (1) PL116404B1 (en)
SE (1) SE437747B (en)
SU (1) SU886760A3 (en)
ZA (1) ZA783305B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2020077B (en) * 1978-04-28 1983-01-12 Texas Instruments Inc Learning aid or game having miniature electronic speech synthesizer chip
GB2059726B (en) * 1979-10-03 1984-06-27 Nippon Telegraph & Telephone Sound synthesizer
JPS6054680B2 (en) * 1981-07-16 1985-11-30 カシオ計算機株式会社 LSP speech synthesizer
AU588334B2 (en) * 1985-07-18 1989-09-14 Raytheon Company Digital sound synthesizer and method
CA1328509C (en) * 1988-03-28 1994-04-12 Tetsu Taguchi Linear predictive speech analysis-synthesis apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199427A5 (en) * 1972-09-12 1974-04-05 Ibm France
US3979557A (en) * 1974-07-03 1976-09-07 International Telephone And Telegraph Corporation Speech processor system for pitch period extraction using prediction filters
NL7506141A (en) * 1975-05-26 1976-11-30 Philips Nv DIGITAL FILTER.
US3980873A (en) * 1975-06-27 1976-09-14 Aeronutronic Ford Corporation Digital convolutional filter
US4022974A (en) * 1976-06-03 1977-05-10 Bell Telephone Laboratories, Incorporated Adaptive linear prediction speech synthesizer

Also Published As

Publication number Publication date
ES477929A1 (en) 1979-10-16
JPS547838A (en) 1979-01-20
AR218313A1 (en) 1980-05-30
PL207704A1 (en) 1979-04-09
NL186425C (en) 1990-11-16
BR7803856A (en) 1979-04-17
IL54878A (en) 1980-07-31
FR2394933B1 (en) 1983-09-30
GB1603993A (en) 1981-12-02
NL7806366A (en) 1978-12-19
NL186425B (en) 1990-06-18
IL54878A0 (en) 1978-08-31
CH633922A5 (en) 1982-12-31
AU520897B2 (en) 1982-03-04
SE437747B (en) 1985-03-11
SE7806380L (en) 1978-12-18
PL116404B1 (en) 1981-06-30
IT7849909A0 (en) 1978-06-16
CS266303B2 (en) 1989-12-13
FR2394933A1 (en) 1979-01-12
ES477928A1 (en) 1979-10-16
CA1118104A (en) 1982-02-09
JPS6144320B2 (en) 1986-10-02
CS401978A2 (en) 1989-02-10
IT1156831B (en) 1987-02-04
AU3701778A (en) 1979-12-20
DE2826570C2 (en) 1988-10-20
DE2826570A1 (en) 1979-01-04
MX144810A (en) 1981-11-23
BE868205A (en) 1978-10-16
ZA783305B (en) 1980-01-30
SU886760A3 (en) 1981-11-30

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