One more question about this: what's the best way to limit the bandwidth for this purpose? Low pass filter? Upsampling from a lower sampling frequency?
Either method works, although upsampling with a quality ADC/SRC is ideal. If you go the standard filter route, you want a steeper than ordinary filter for optimal results. For example, you could chain three second-order filters at slightly staggered corner frequencies.
SRCs are very highly optimized filters, so that's the simplest way. I know it does sound a bit backwards to record at 88.2 just to downsample and then upsample for processing. So you would only do that to potentially take advantage of a better filter than your converters possess. Otherwise, you'd just record at 44.1 and upsample to process, which is what I tend to do.
Thanks, Jon. That's kind of what I assumed based on some of your previous posts.
On a related topic, any recommendations on an SRC? Preferably not too expensive. I have been using the r8brain standalone, which seems pretty good, but if there is something better that doesn't cost a fortune, I'm all ears...
