| 主权项 |
1. A voice signal processing apparatus, comprising:
a processing unit, configured to lower a sampling voice signal to generate a frequency-lowered signal including a sequence of original frequency-lowered signal frames, and generate corresponding renovating frequency-lowered signal frames according to the original frequency-lowered signal frames, wherein each of the original frequency-lowered signal frames comprises p sampling points, the processing unit determines a first sampling point of an mth original frequency-lowered signal frame phase-matched to the sampling point corresponding to a phase reference sampling point number according to the phase reference sampling point number of an (m−1)th original frequency-lowered signal frame corresponding to a middle sampling point of an (m−1)th renovating frequency-lowered signal frame, uses q consecutive sampling points starting from the first sampling point phase-matched to the sampling point corresponding to the phase reference sampling point number as the sampling points of an mth renovating frequency-lowered signal frame, overlaps adjacent two of the renovating frequency-lowered signal frames to generate an overlapped voice signal, wherein the phase reference sampling point number is a number of the sampling point of the (m−1)th original frequency-lowered signal frame corresponding to the middle sampling point of the (m−1)th renovating frequency-lowered signal frame, p and q are positive integers, and m is a positive integer greater than 1. |
