Audio sampling question

Aug 30, 2007 4 Replies
H

Can someone check my logic on this? It sounds simple but I'd appreciate someone confirming what I'm trying to do.



I have CD-quality streaming audio digitized at 44.1 ksamples per second,



16-bit samples.

I also have an approx 10 msec duration recorded segment of the same audio, in the same digital format as above.



I'm shifting the digitized streaming audio in real time into a comparator and looking for a data match between my sample and the streaming audio.



Question: What is the maximum theoretical time lag before a match can be detected, ignoring quantization noise and processing time? Is it one-half the sample period or some other value?



Thanks for your help.


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P

"HiTek"

** This TROLL posted the same silly Q a couple of weeks ago.

...... Phil

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R

What do you mean by "match"?

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R

If your snippet has a time stamp, and you're attempting to match it to a time stamp on the stream, then you'll have to either put the whole thing in a huge array and do a binary search on time-stamps, or you'll just have to go through the whole stream until you see a match You can do this at any speed you want to, BTW.

So, 1. ;-)

You Betcha! ;-) Rich

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