SOUND SIGNAL EXTRACTING SYSTEM

摘要

PURPOSE:To decrease the circuit scale and to simplify a signal processing by labelling the signal string of a voice incoming with digital coding between given time intervals and extracting the signal strings of the voice added with a specific label. CONSTITUTION:The label of a signal region 12 is given to a sum of CODEC signals between threshold values 7 and 8. Similarly, the label of a signal region 13 is given to a sum of CODEC signals between threshold values 8 and 9, the label of a signal region 14 is given to the sum of CODEC signals between threshold values 9 and 10, and the label of a signal region 15 is given to the sum of CODEC signals between threshold values 10 and 11. The label of a silence signal is given to n-set of signal strings incoming with digital coding at the i-th t0 section to extract the strings as the silence signal. Further, the label of presence signal is given to each n-set of signal strings incoming with digital coding at the (i-1)-th and the (i+1)-th sections to extract them as the presence signal.