Search - c 15.4

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[Speech/Voice recognition/combine] 4.8k_CELP DL : 0: 语音CELP压缩解压源代码（C语音)- Pronunciation CELP compression decompression source code (C pronunciation) - * 4800 bps CELP Characteristics * * Spectrum Pitch Code Book * ------------- --------------- ----------------- * Update 30 ms 30/4 = 7.5 ms 30/4 = 7.5 ms * ll=240 lp=60 l=60 * * Order 10 256 (max) x 60 512 (max) x 60 * 1 gain 1 gain * * Analysis Open loop Closed loop Closed loop * Correlation Modified MSPE MSPE VQ * 30 ms Hamming VQ, weight=0.8 weight=0.8 * no preemphasis range 20 to 147 shift by 2 * 15 Hz BW exp (w/ fractions) 77 sparsity * * Bits per 34 indep LSP index: 8+6+8+6 index: 9*4 * Frame [3444433333] gain(-1,2): 5*4 gain(+/-): 5*4 * * Bit Rate 1133.3 bps 1600 bps 1866.67 bps * * NOTE: The remaining 200 bps are used as follows: 1 bit per frame * for synchronizatio
Date : 2025-12-19 Size : 107kb User : lcd