| 摘要 |
PROBLEM TO BE SOLVED: To obtain suitable filter processing results by eliminating discontinuous points in the end of a frame of IFFT output.SOLUTION: A digital signal processing apparatus 1 generates from a sample stream of a time domain a plurality of frames overlapped in a fixed section, performs Fourier transform on the frames generated for transforming into a frequency domain, and adds frequency characteristics to the frames transformed into the frequency domain. Inverse Fourier transform is then performed to the frames, to which the frequency characteristics have been added, for transforming into the sample stream of the time domain and deletes overlapped parts in the transformed sample stream of the time domain. |
