there is a chip that is an analog delay chip. digikey carries them. i think
they might be refered to as bucket delay chips. it is basicly an analog
memory chip that shifts 1024 readings.

michael


At 07:56 AM 8/15/97 +0200, you wrote:
>Amos Ndegwa wrote:
>>
>> Someone to advise me on whether there is an IC(s) that can be used to
>> design/build an audio echo circuit with an adjustable time delay. (Not
to be
>> used on a computer)
>>
>> Thanks in advance
>>
>> Amos
>
>This could turn out to be a nice '74 project. Run a 16C74 @ 20MHz.
>Sample the
>audio and shove it into external RAM. Shift the entire contents and move
>it
>out to a DAC. Add this to the normal audio path.
>
>If you are going to use it for music, then :
>
>You shake it to the left, shake it to the right,
>sample at full speed, but use a PIC, al right?
>
>;)
>
>--
>Friendly Regards
>
>Tjaart van der Walt
>mailto:tjaart@wasp.co.za