The dynamic range of a signal V is the ratio of the maximum to the minimum absolute value, expressed in decibels. The dynamic range expected in a signal is to some extent an expression ofthe signal quality. It also dictates the number of bits per sample needed to reduce the quantization noise to an acceptable level. For example, we may want to reduce the noise to at least an order of magnitude below Vmin. Suppose the dynamic range for a signal is 60 dB. Can we use 10 bits for this signal? Can we use 16 bits? 6. 信号V的动态范围是最大值与最小绝对值之比,以分贝表示。信号的动态范围在某种程度上是信号质量的一种表达。它还规定了每个样本所需的比特数,以将量化噪声降低到可接受的水平。例如,我们可能希望将噪声降低到Vmin以下至少一个数量级。假设一个信号的动态范围是60分贝。我们能用10位来表示这个信号吗?我们可以用16位吗?