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1. 发明申请

US20060238386A1 System and method for audio data compression and decompression using discrete wavelet transform (DWT) 失效
标题翻译：使用离散小波变换（DWT）进行音频数据压缩和解压缩的系统和方法
公开(公告)号：US20060238386A1
公开(公告)日：2006-10-26
申请号：US11114200
申请日：2005-04-26
申请人： Gen Huang , Charles Hsu
发明人： Gen Huang , Charles Hsu
IPC分类号： H03M7/00
CPC分类号： G10L19/0216 , G10L19/008 , G10L19/24
摘要： A system for audio data processing including sub-systems for compression and for de-compression. The compression sub-system includes an AD converter, a segment-based multi-channel splitter splitting and segmenting signals into channels each with segments, multi-level 1D discrete wavelet transformers each discrete wavelet transforming for a respective channel each segment thereof in sequence and recursively through a predetermined number of filtering levels into wavelet coefficients, quantizers, a multiplexer multiplexing quantized wavelet coefficients into 2-D arrays, and an embedded block coder coding the 2-D arrays into code blocks, discarding some of the code blocks, truncating a bit stream embedded in each remaining code block, and stringing the truncated bit stream embedded in each remaining code block into a compressed data stream. Another compression sub-system includes a non-segment-based multi-channel splitter, and a plurality groups of 1D discrete wavelet transformers.
摘要翻译：一种用于音频数据处理的系统，包括用于压缩和解压缩的子系统。压缩子系统包括一个AD转换器，一个基于段的多通道分路器分割和分段信号，每个信道分为多个段，多级一维离散小波变换器，每个离散小波变换相应通道，每个段按顺序和递归通过将预定数量的滤波电平转换为小波系数，量化器，多路复用多路复用量化的小波系数为2-D阵列，以及将二维阵列编码为码块的嵌入式块编码器，丢弃一些码块，截断一位嵌入在每个剩余代码块中的流，并将嵌入在每个剩余代码块中的截断位流串接成压缩数据流。另一个压缩子系统包括非分段式多通道分路器和多组1D离散小波变换器。

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