AW: MN3005, MN3007 BBD.. anyone built one?

[Michael Rogers]

Martin Czech <martin.czech at intermetall.de> wrote:
>> In case we're speaking of a digital delay, the switch often does
>> bypass the ADC / DAC and feeds the digital output into the 
>> loop again.
>> Works badly on the few PCM delays I have (there's always
>> a glitch), but used to work fine on the Delta Delay (you only
>> switch one tiny bit of an oversampled signal).
>> 
>
>Well ,that's too easy, I thought inifite means infinite decay time AND
>ability to add input signals as well...  In this case you nead a hard
>limiter, be it digital or analog.  I think this would be an nice effect,
>if you stop playing, it repeats forever, and if you play a new (pattern)
>it would superseed the old, the more new stuff comes in the more the
>old stuff fades away.

It *was* a nice effect :(

This is why I had imagined the feedback loop coming out of the DAC and
being mixed with the new input signal (with the input being mixed at a
level proportionate to its volume so that a quiet input didn't reduce
the volume of the feedback loop), before being returned to the ADC. 
At the risk of sounding stupid (too late!), which of the following
"mystery parts" would you use to make the limiter circuit?

NE570 compander (btw is this dual channel like the NE571?)
2 voltage comparators
CD4066 quad bilateral switch
M74HC75
Various op amps unaccounted for...

Sorry to bother you all with these questions... let me know if it's off-
topic.


 - Michael Rogers