GB8700378D0 - Processing speech signals - Google Patents
Processing speech signalsInfo
- Publication number
- GB8700378D0 GB8700378D0 GB8700378A GB8700378A GB8700378D0 GB 8700378 D0 GB8700378 D0 GB 8700378D0 GB 8700378 A GB8700378 A GB 8700378A GB 8700378 A GB8700378 A GB 8700378A GB 8700378 D0 GB8700378 D0 GB 8700378D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- speech
- normalization
- processing
- modified
- 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.)
- Granted
Links
- 238000010606 normalization Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 230000007774 longterm Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
-
- 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
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/04—Time compression or expansion
-
- 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
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/90—Pitch determination of speech signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Quality & Reliability (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
A method and apparatus for processing speech signals is disclosed which is applicable to a variety of speech processing including narrowband, mediumband and wideband coding. The speech signal is modified by a normalization process using the envelope of the speech signal such that the modified signal will have more desirable characteristics as seen by the intended processing algorithm (30), eg narrower bandwidth. The modification is achieved by a point-by-point division (normalization) (26) of the signal by an amplitudes function (AF), which is obtained from lowpass filtering (16) and magnitude of the signal. Several examples of normalized signal are presented both for short and long term normalization. Application to pitch detection and speech coding is described. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US82298286A | 1986-01-24 | 1986-01-24 |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8700378D0 true GB8700378D0 (en) | 1987-02-11 |
GB2186160A GB2186160A (en) | 1987-08-05 |
GB2186160B GB2186160B (en) | 1989-11-01 |
Family
ID=25237469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8700378A Expired GB2186160B (en) | 1986-01-24 | 1987-01-08 | Method and apparatus for processing speech signals |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH0198000A (en) |
GB (1) | GB2186160B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03132228A (en) * | 1989-10-18 | 1991-06-05 | Victor Co Of Japan Ltd | System for encoding/decoding orthogonal transformation signal |
DK46493D0 (en) * | 1993-04-22 | 1993-04-22 | Frank Uldall Leonhard | METHOD OF SIGNAL TREATMENT FOR DETERMINING TRANSIT CONDITIONS IN AUDITIVE SIGNALS |
JP2015191102A (en) * | 2014-03-28 | 2015-11-02 | パイオニア株式会社 | acoustic device and signal processing method |
-
1987
- 1987-01-08 GB GB8700378A patent/GB2186160B/en not_active Expired
- 1987-01-23 JP JP1503187A patent/JPH0198000A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPH0198000A (en) | 1989-04-17 |
GB2186160B (en) | 1989-11-01 |
GB2186160A (en) | 1987-08-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20000108 |