- 2006/10/15 MLT를 사용하는 G.722.1 코덱
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g.722.1와 관련된 글 1개
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MLT를 사용하는 G.722.1 코덱
Beckgom | 2006/10/15 20:12
논문을 찾다보니 대역폭 확장을 위해 MLT (Modulated Lapped Transform)를 사용한 방법들이 몇개 나와서 이를 이용한 G.722.1를 정리하여보면...다음과 같다.
Developed to deliver wideband speech and music atlower bit rates than G.722, the G.722.1 standard is limited in scope tohandsfree operation and low packet loss conditions.
The VoiceAge G.722.1 implementation is fully compliant with the ITU-T G.722.1 recommendation, operating at 24 or 32 kbps.
Encoded bandwidth | ~ 50-7000 Hz | |
Standardized | ITU-T 1999 | |
Coding type | Transform coding | |
Bit rate | 24/32 kbps | |
Delay (ms): | | |
Quality | Good music performance. Scope of standard limited to hands-free and lowpacket loss rates. Transform coding yields poor speech quality in someoperating conditions. | |
Complexity: |
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Applications
- Wideband telephony – Wi-Fi, VoIP
- Audio and videoconferencing
- Streaming audio over the Internet
- Audio storage and playback
- Voicemail
- Store and forward messaging
출처 : http://www.voiceage.com/
