CH680030A5 - - Google Patents
Download PDFInfo
- Publication number
- CH680030A5 CH680030A5 CH95690A CH95690A CH680030A5 CH 680030 A5 CH680030 A5 CH 680030A5 CH 95690 A CH95690 A CH 95690A CH 95690 A CH95690 A CH 95690A CH 680030 A5 CH680030 A5 CH 680030A5
- Authority
- CH
- Switzerland
- Prior art keywords
- segments
- signal
- filter
- speech
- adaptive
- Prior art date
Links
- 238000013139 quantization Methods 0.000 claims description 40
- 230000003044 adaptive effect Effects 0.000 claims description 32
- 238000004364 calculation method Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 17
- 230000005284 excitation Effects 0.000 claims description 6
- 238000011045 prefiltration Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000004088 simulation Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 230000008447 perception Effects 0.000 claims description 2
- 230000003313 weakening effect Effects 0.000 claims 1
- 230000006870 function Effects 0.000 description 18
- 238000001228 spectrum Methods 0.000 description 14
- 238000007493 shaping process Methods 0.000 description 11
- 230000003595 spectral effect Effects 0.000 description 11
- 238000004458 analytical method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004422 calculation algorithm Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000000214 mouth Anatomy 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000003254 palate Anatomy 0.000 description 1
- 210000003800 pharynx Anatomy 0.000 description 1
- 230000004962 physiological condition Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 230000010076 replication Effects 0.000 description 1
- 210000005182 tip of the tongue Anatomy 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 210000001260 vocal cord Anatomy 0.000 description 1
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
- G10L19/04—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)
- Spectroscopy & Molecular Physics (AREA)
- Computational Linguistics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH95690A CH680030A5 (es) | 1990-03-22 | 1990-03-22 | |
| FI911010A FI911010A (fi) | 1990-03-22 | 1991-02-28 | Foerfarande och anordning foer digitalisering av tal. |
| EP19910103907 EP0449043A3 (en) | 1990-03-22 | 1991-03-14 | Method and apparatus for speech digitizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH95690A CH680030A5 (es) | 1990-03-22 | 1990-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH680030A5 true CH680030A5 (es) | 1992-05-29 |
Family
ID=4199089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH95690A CH680030A5 (es) | 1990-03-22 | 1990-03-22 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0449043A3 (es) |
| CH (1) | CH680030A5 (es) |
| FI (1) | FI911010A (es) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0588932B1 (en) * | 1991-06-11 | 2001-11-14 | QUALCOMM Incorporated | Variable rate vocoder |
| FI964975A (fi) * | 1996-12-12 | 1998-06-13 | Nokia Mobile Phones Ltd | Menetelmä ja laite puheen koodaamiseksi |
-
1990
- 1990-03-22 CH CH95690A patent/CH680030A5/de not_active IP Right Cessation
-
1991
- 1991-02-28 FI FI911010A patent/FI911010A/fi not_active Application Discontinuation
- 1991-03-14 EP EP19910103907 patent/EP0449043A3/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP0449043A3 (en) | 1992-04-29 |
| FI911010A0 (fi) | 1991-02-28 |
| EP0449043A2 (de) | 1991-10-02 |
| FI911010A (fi) | 1991-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2022043B1 (de) | Informationssignalcodierung | |
| DE69526007T2 (de) | Postfilter und Verfahren zur Postfilterung | |
| DE69910240T2 (de) | Vorrichtung und verfahren zur wiederherstellung des hochfrequenzanteils eines überabgetasteten synthetisierten breitbandsignals | |
| DE69618422T2 (de) | Verfahren zur Sprachdekodierung und tragbares Endgerät | |
| EP1979901B1 (de) | Verfahren und anordnungen zur audiosignalkodierung | |
| DE69132013T2 (de) | Verfahren für sprachquantisierung und fehlerkorrektur | |
| DE69926821T2 (de) | Verfahren zur signalgesteuerten Schaltung zwischen verschiedenen Audiokodierungssystemen | |
| DE69521164T2 (de) | System zum Kodieren und Dekodieren von Signalen | |
| DE60121405T2 (de) | Transkodierer zur Vermeidung einer Kaskadenkodierung von Sprachsignalen | |
| DE102008042579B4 (de) | Verfahren zur Fehlerverdeckung bei fehlerhafter Übertragung von Sprachdaten | |
| DE69401514T2 (de) | Vom rechenaufwand her effiziente adaptive bitzuteilung für kodierverfahren und kodiereinrichtung | |
| DE60006271T2 (de) | Celp sprachkodierung mit variabler bitrate mittels phonetischer klassifizierung | |
| DE60029990T2 (de) | Glättung des verstärkungsfaktors in breitbandsprach- und audio-signal dekodierer | |
| DE69810361T2 (de) | Verfahren und Vorrichtung zur mehrkanaligen akustischen Signalkodierung und -dekodierung | |
| DE69900786T2 (de) | Sprachkodierung | |
| DE602004006211T2 (de) | Verfahren zur Maskierung von Paketverlusten und/oder Rahmenausfall in einem Kommunikationssystem | |
| EP0978172B1 (de) | Verfahren zum verschleiern von fehlern in einem audiodatenstrom | |
| DE69730721T2 (de) | Verfahren und vorrichtungen zur geräuschkonditionierung von signalen welche audioinformationen darstellen in komprimierter und digitalisierter form | |
| DE60027956T2 (de) | Sprachkodierung mit variabler BIT-Rate | |
| DE69820362T2 (de) | Nichtlinearer Filter zur Geräuschunterdrückung in linearen Prädiktions-Sprachkodierungs-Vorrichtungen | |
| DE69033510T2 (de) | Numerischer sprachkodierer mit verbesserter langzeitvorhersage durch subabtastauflösung | |
| DE19722705A1 (de) | Verfahren zur Abschätzung der Verstärkung zur Sprachkodierung | |
| DE68917584T2 (de) | Zur Sprachqualitätsverbesserung geeignetes Kodiergerät unter Anwendung einer Doppelanlage zur Pulserzeugung. | |
| DE19743662A1 (de) | Verfahren und Vorrichtung zur Erzeugung eines bitratenskalierbaren Audio-Datenstroms | |
| DE69622646T2 (de) | Abschwächung der Kodebuchverstärkung bei Ausfall von Datenpaketen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NV | New agent |
Representative=s name: KELLER & PARTNER PATENTANWAELTE AG |
|
| PL | Patent ceased |