| 摘要 |
PURPOSE:To convert a conversation on a single channel into a conversation on plural channels by controlling a reproduced single channel sound image with position information prepared separately. CONSTITUTION:After a data read from a memory 1 is converted into an original analog voice signal at a D/A converter 4, the result is applied to a headphone 7 via a resistance(r) and amplifiers 5, 6. On the other hand, each sentence and a channel designating signal representing R or L channel are stored in a memory 12 and since only either one of switches 8, 9 is turned on, an output v0 of the D/A converter 4 is attenuated to 1/2 only one of the R or L channel and the result is applied to the amplifier 5 or 6. Thus, the voice of the sentence is listened is by the headphone 7 only at the channel not subject to attenuation and separate left and right voices are listened to by the headphone 7 by using the channel designating signal. |
