| 摘要 |
An acoustic signal is input to a microphone 1 in sound reproducing apparatus (eg. in a toy) and re- issued from a loudspeaker 2 at a higher pitch by delta modulation. When the apparatus is incorporated in a doll, a solid state memory 7 stores speech from a child (after the modulation stage) and a serial to parallel conversion thereof for subsequent read-out, processing and amplification. The output from the loudspeaker is then the same as the child's speech but at a higher pitch and it is delayed. <IMAGE> |
