(57) The present invention comprises an advertising voice database (102) which stores
the advertising voice data (101) received, an advertising voice extraction part (103)
which extracts the advertising voice data (101) from the advertising voice database,
a voice synthesizing part (104) which synthesizes a voice signal by inserting the
advertising voice data extracted in the advertising voice extraction part (103) into
the main voice data (100) received, and a voice outputting part (105) which outputs
the voice signal synthesized in the voice synthesizing part (104), and according to
advertisement inserting points which are added to the main voice data, inserts the
advertising voice data into the positions in the main voice data designated by the
advertisement inserting points, and outputs the voice signal after its volume is adjusted.
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