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signalcompress

于 2013-07-27 发布 文件大小:2KB
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  给出了信号压缩通常的变换-量化-编码函数。DHT函数为离散DHT变换,是FFT变换的近似,其正反变换相同,克服了FFT复系数不利于存储的缺点。LLMAX函数给出了某x序列在固定比特下的最佳量化输出。熵编码函数为霍夫曼编码。(Gives the signal compression usually transform- quantitative- coding function. DHT DHT discrete transform function, the FFT transform approximation, the same positive and negative transformation, overcoming complex FFT coefficient is not conducive to storage shortcomings. LLMAX function x is given a fixed bit sequence in the optimum quantized output. Entropy coding function as Huffman coding.)

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