The Voice Recording and Playback System enables recording of upto 8 different messages. In the playback mode, the circuit plays recorded message either randomly or in a sequential fashion. Build the project and enjoy listening to secret talks of your friends.!!
Things which you can learn:
*Application of the voice processor(aPR33A)
*Inbuilt low-power audio amplifier
*Concepts and implementation of ADC and DAC
Buid a cool voice recording with playback system and become a SPY agent like the famous 007 james bond.
To record the voice ,Close slide switch CONN4 to make pin 12 low, thereafter, hold S9-S14 to record corresponding voice messages. LED2 glows to indicate with beep to indicate recording continues.
For playback of any device status, open the slide switch CONN4 and press the corresponding switch S2 to S7, the recorded audio can be heard through speaker connected to CONN2.