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Registered APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC
- Inventors
- Lee Mi Suk, Do Young Kim, Lee Byung Sun
- Application No.
- 13613792 (2012.09.13)
- Publication No.
- 20130066627 (2013.03.14)
- Registration No.
- 9142222 (2015.09.22)
- Country
- UNITED STATES
- Project Code
- 07MT2600, Development of Multi-codec and its Control Technology Providing Variable Bandwidth Scalability, Do Young Kim
- Abstract
- An apparatus and method of improving the quality of a speech codec are provided. In the method, a first energy of a signal decoded by a low-band codec is calculated, and a second energy of a signal decoded by a low-band enhancement mode is calculated. Then, when the first energy is less than a first threshold value or less than a product of the second energy and a second threshold value, a size of the decoded signal is scaled. Accordingly, generation of a quantization error with respect to a silence segment is reduced.
- KSP Keywords
- Quantization error, Threshold Value, enhancement-mode, low-band, speech codec
- Family
| Status | Patent | Country | KIPRIS |
|---|---|---|---|
| Registered | 음성코덱의 품질향상장치 및 그 방법 | KOREA | |
| Registered | 음성코덱의 품질향상장치 및 그 방법 | KOREA | KIPRIS |
| Registered | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC | UNITED STATES | |
| Registered | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC | UNITED STATES | |
| Registered | Quality enhancement of speech codec by suppressing the quantization errors | JAPAN | |
| Registered | Quality enhancement of speech codec by suppressing the quantization errors | JAPAN | |
| Registered | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC | JAPAN | |
| Registered | APPARATUS AND METHOD OF ENHANCING QUALITY OF SPEECH CODEC | CHINA |