CA2301995A1 - High quality speech coder at low bit rates - Google Patents
High quality speech coder at low bit rates Download PDFInfo
- Publication number
- CA2301995A1 CA2301995A1 CA002301995A CA2301995A CA2301995A1 CA 2301995 A1 CA2301995 A1 CA 2301995A1 CA 002301995 A CA002301995 A CA 002301995A CA 2301995 A CA2301995 A CA 2301995A CA 2301995 A1 CA2301995 A1 CA 2301995A1
- Authority
- CA
- Canada
- Prior art keywords
- speech coder
- bit rates
- low bit
- high quality
- quality speech
- 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
- 230000003595 spectral effect Effects 0.000 abstract 3
- 230000006866 deterioration Effects 0.000 abstract 1
Landscapes
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
In a speech coder, a spectral parameter computer obtaining a plurality of spectral parameters from an input speech signal and quantizes the obtained spectral parameters. Even at low bit rates, the speech coder requires relatively less computational effort and experiences less sound quality deterioration.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP261121/1996 | 1996-08-26 | ||
| JP26112196A JP3360545B2 (en) | 1996-08-26 | 1996-08-26 | Audio coding device |
| JP307143/1996 | 1996-10-31 | ||
| JP30714396A JP3471542B2 (en) | 1996-10-31 | 1996-10-31 | Audio coding device |
| CA002213909A CA2213909C (en) | 1996-08-26 | 1997-08-25 | High quality speech coder at low bit rates |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002213909A Division CA2213909C (en) | 1996-08-26 | 1997-08-25 | High quality speech coder at low bit rates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2301995A1 true CA2301995A1 (en) | 1998-02-26 |
| CA2301995C CA2301995C (en) | 2005-10-18 |
Family
ID=27170442
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002301994A Expired - Fee Related CA2301994C (en) | 1996-08-26 | 1997-08-25 | High quality speech coder at low bit rates |
| CA002301995A Expired - Fee Related CA2301995C (en) | 1996-08-26 | 1997-08-25 | High quality speech coder at low bit rates |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002301994A Expired - Fee Related CA2301994C (en) | 1996-08-26 | 1997-08-25 | High quality speech coder at low bit rates |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2301994C (en) |
-
1997
- 1997-08-25 CA CA002301994A patent/CA2301994C/en not_active Expired - Fee Related
- 1997-08-25 CA CA002301995A patent/CA2301995C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2301994A1 (en) | 1998-02-26 |
| CA2301994C (en) | 2004-10-26 |
| CA2301995C (en) | 2005-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |