등록
양자화 잡음 억제로 인한 음성 코덱의 품질 향상
- 발명자
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이미숙, 김도영, 이병선
- 출원번호
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13613742 (2012.09.13)
- 공개번호
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20130073282 (2013.03.21)
- 등록번호
- 9135926 (2015.09.15)
- 출원국
- 미국
- 협약과제
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07MT2600, 가변대역 멀티코덱 및 제어기술 개발,
김도영
- 초록
- 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.
- 패밀리
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