🚀 go-pugleaf

sivaram@hplabsz.hpl.hp.com (S. Sivaramakrishnan) writes:

>I am looking for a cheap method to record and playback about 15 seconds of
>sound on a chip.

>The whole setup, I GUESS, will comprise:
>1) A microphone
>2) An A/D converter that digitizes the sound
>3) A unit that accepts the commands "record" and "playback"
>4) Some memory that holds the sound image
>5) A D/A converter to generate an analog signal
>6) A speaker for playback
>7) Power supply

>Does a chip that has most/all the features except the power supply exist?

>If there is an alternative/better method I would be extremely interested to
>know.

>Sivaram

There's a chip that does almost exactly what you want. The chip contains
microphone amp, ADC, memory, DAC, speaker amp, and control logic. Ofcourse
I don't remember the name exactly, but I think it was something like:
"ISDNxx12" for 12 seconds recording with x bps
"ISDNxx24" for 24 seconds recording with x/2 bps.
The memory was some kind of analogue memory with 128 different states, if I
remember it correctly.

Mail me if you want further imformation about the chip.

Henrik Bohre

  @>-+--