hi there, thanks for the brilliant responses.
in response to analog the circuit needs a sampling rate of only around 20khz, it does not need to sound amazing. the time recording required needs to be between 10 and 20 seconds. i would be interested in this pic idea although i can not find anything on google?
i have not purchased any memory yet as i have not been able to locate any stand alone chips, however could i not use the onboard memory in a microprocessor?
regards
George