Re: Audio sampling question

Eeyore wrote:

Bob wrote:

"HiTek" <personalemailcl@xxxxxxxxx> wrote

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.

6.4

Bob

42

Graham

It's 34.

Accounting for average variations in signal, and the stated sample resolution along with the sample rate, 34 samples would be a reliable enough count (93% reliable) without going overboard on the sample size.

Naw, I just made that last bit up.

For that matter, I made the first bit up too.

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