Quote Originally Posted by mister_e View Post
So why not using a dedicated Audio delay IC instead? Some are Home theater dedicated.. but who will know?
I have to find one first, something in less than a BGA9000 pin package! And this project is just a 'gee-whiz' box that goes in between my mp3 player and the stereo itself. Eventually, I'm going to tie it into a LOAD of leds for the spectrum analyzer instead of the graphic LCD.

Ti do some. A PIC/ad/memory/DA plah plah would be just too bad for that kind of task... more distortion than good results...
As it is, the output sounds pretty good. I don't overload the input...and if anything, I introduce noise rather than distortion (at least not the clipping kind of distortion). My sample rate on the A/D and D/A is 44.2khz (because it's a good round number that the master timing PIC produces), I know higher is better, but that would mean more need for memory in the middle.

[QUOTE}If you need only a few Spectrum bands, have a look to TDA7416[/QUOTE]
I like my 128 band per channel spectrum analyzer!

Sorry but, you make it much complicated that it should be...and you scrap the possible modern sound quality... wich is already soooo bad
Yeah i'm an audio purist
Probably, but if we didn't overcomplicate things, we wouldn't be here!

you could still by an audio delay processor
Lexicon, Alesis, Yamaha, etc etc etc
What I've got right now is fairly compact (about the size of a VCR tape) and runs off a battery pack. An external box is not in my 'Master Plan',