搜索结果: 1-2 共查到“frequency content”相关记录2条 . 查询时间(0.106 秒)
Spurious velocity changes caused by temporal variations in ambient noise frequency content
Time-series analysis Interferometry Surface waves and free oscillations Coda waves
2014/4/10
Ambient seismic noise cross-correlations are now being used to detect temporal variations of seismic velocity, which are typically on the order of 0.1 per cent. At this small level, temporal variation...
FREQUENCY CONTENT ORIENTED MODIFICATION OF QUANTIZATION MATRIX IN DCT – BASED COMPRESSION
Image compression quantization matrix
2010/1/12
In order to improve the compression rate for comparable values of error metrics, we propose a method to modify the standard quantization matrix used in JPEG, according to image frequency content. Unli...