请教量化噪声的问题

方块forever

各位前辈，
看到书上说量化噪声均匀分布在0到fs/2内，我不太理解，按照量化噪声是白噪声的观点来看，量化噪声不应该均匀分布在各个频率范围内吗？还是说因为我以fs的速率采样，所以只需要考虑fs/2之内的噪声？谢谢！

sharpmental

量化噪声在输入信号随机的情况下象白噪声
由于你只考虑fs/2以内的信号 所以

Robin_LBJ

你这是单边功率谱的情况，双边功率谱就是-fs/2-fs/2

糯米zz

While it is correct to look at a wide spectrum to calculate noise, it would be more useful to limit our view of the spectrum to frequencies up to the Nyquist frequency , where our desired signal spectrum should reside. We can do this (= fn = fs/2) by assuming the entire quantization noise power lies in the base spectrum.

糯米zz

  the worst case.

klauslu

顶一下问问