发明名称 |
Codec conditioning system and method |
摘要 |
An audio processing application is provided which utilizes an audio codec encode/decode simulation system and a psychoacoustic model to estimate audible quantization noise that may occur during lossy audio compression. Mask-to-noise ratio values are computed for a plurality of frequency bands and are used to intelligently process an audio signal specifically for a given audio codec. In one exemplary embodiment, the mask-to-noise ratio values are used to reduce the extent of perceived artifacts for lossy compression, such as by modifying the energy and/or coherence of frequency bands in which quantization noise is estimated to exceed the masking threshold.
|
申请公布号 |
US2007239295(A1) |
申请公布日期 |
2007.10.11 |
申请号 |
US20070710070 |
申请日期 |
2007.02.23 |
申请人 |
THOMPSON JEFFREY K;REAMS ROBERT W;WARNER AARON |
发明人 |
THOMPSON JEFFREY K.;REAMS ROBERT W.;WARNER AARON |
分类号 |
G06F17/00 |
主分类号 |
G06F17/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|