Suppose the dynamic range of speech in telephony implies a ratio Vmax/Vmin of about 256. Using uniform quantization, how many bits should we use to encode speech to make the quantization noise at least an order of magnitude less than the smallest detectable telephonic sound? 假设电话语音的动态范围意味着一个比率VmaxVmin约为256。使用均匀量子化,我们应该使用多少位来编码语音,使量子化噪声至少比可检测到的最小电话声音小一个数量级?