GB1603993A - Lattice filter for waveform or speech synthesis circuits using digital logic - Google Patents
Lattice filter for waveform or speech synthesis circuits using digital logic Download PDFInfo
- Publication number
- GB1603993A GB1603993A GB20115/78A GB2011578A GB1603993A GB 1603993 A GB1603993 A GB 1603993A GB 20115/78 A GB20115/78 A GB 20115/78A GB 2011578 A GB2011578 A GB 2011578A GB 1603993 A GB1603993 A GB 1603993A
- Authority
- GB
- United Kingdom
- Prior art keywords
- data
- filter
- digital
- speech
- instantaneous values
- 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
Links
- 230000015572 biosynthetic process Effects 0.000 title description 11
- 238000003786 synthesis reaction Methods 0.000 title description 11
- 230000005284 excitation Effects 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 claims description 4
- 230000003252 repetitive effect Effects 0.000 claims description 2
- 238000007792 addition Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 10
- 238000013461 design Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 210000001260 vocal cord Anatomy 0.000 description 6
- 230000001755 vocal effect Effects 0.000 description 6
- 230000003321 amplification Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 5
- 230000003111 delayed effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
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 TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; 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 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
- G10L19/04—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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Physics (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Health & Medical Sciences (AREA)
- Computational Linguistics (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Complex Calculations (AREA)
- Electrophonic Musical Instruments (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Analogue/Digital Conversion (AREA)
- Filters That Use Time-Delay Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80746177A | 1977-06-17 | 1977-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1603993A true GB1603993A (en) | 1981-12-02 |
Family
ID=25196423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20115/78A Expired GB1603993A (en) | 1977-06-17 | 1978-05-17 | Lattice filter for waveform or speech synthesis circuits using digital logic |
Country Status (20)
Families Citing this family (5)
| 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 |
| GB2131659B (en) * | 1979-10-03 | 1984-12-12 | Nippon Telegraph & Telephone | Sound synthesizer |
| JPS6054680B2 (ja) * | 1981-07-16 | 1985-11-30 | カシオ計算機株式会社 | Ｌｓｐ音声合成装置 |
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2199427A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 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 (nl) * | 1975-05-26 | 1976-11-30 | Philips Nv | Digitaal 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 |
-
1978
- 1978-05-17 GB GB20115/78A patent/GB1603993A/en not_active Expired
- 1978-05-31 SE SE7806380A patent/SE437747B/sv not_active IP Right Cessation
- 1978-06-08 IL IL54878A patent/IL54878A/xx unknown
- 1978-06-08 ZA ZA783305A patent/ZA783305B/xx unknown
- 1978-06-12 AU AU37017/78A patent/AU520897B2/en not_active Expired
- 1978-06-12 NL NLAANVRAGE7806366,A patent/NL186425C/xx not_active IP Right Cessation
- 1978-06-13 CA CA000305329A patent/CA1118104A/en not_active Expired
- 1978-06-15 AR AR272628A patent/AR218313A1/es active
- 1978-06-16 ES ES470853A patent/ES470853A1/es not_active Expired
- 1978-06-16 IT IT49909/78A patent/IT1156831B/it active
- 1978-06-16 SU SU782627100A patent/SU886760A3/ru active
- 1978-06-16 BR BR7803856A patent/BR7803856A/pt unknown
- 1978-06-16 DE DE19782826570 patent/DE2826570A1/de active Granted
- 1978-06-16 MX MX173823A patent/MX144810A/es unknown
- 1978-06-16 JP JP7314378A patent/JPS547838A/ja active Granted
- 1978-06-16 BE BE188641A patent/BE868205A/xx not_active IP Right Cessation
- 1978-06-17 PL PL1978207704A patent/PL116404B1/pl unknown
- 1978-06-19 CH CH666378A patent/CH633922A5/fr not_active IP Right Cessation
- 1978-06-19 FR FR7818289A patent/FR2394933A1/fr active Granted
- 1978-06-19 CS CS784019A patent/CS266303B2/cs unknown
-
1979
- 1979-02-21 ES ES477928A patent/ES477928A1/es not_active Expired
- 1979-02-21 ES ES477929A patent/ES477929A1/es not_active Expired
Also Published As
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PE20 | Patent expired after termination of 20 years |
Effective date: 19980516 |