Reply to post: Re: "Everything between sample points is lost" (@the spectacularly refined chap)

How the FLAC do I tell MP3s from lossless audio?

ThomH

Re: "Everything between sample points is lost" (@the spectacularly refined chap)

I think he means to make the distinction between the time domain and the frequency domain. Assuming perfect instantaneous sampling then everything in between samples in the time domain is lost. But, frequency wise, there's no new information between samples to miss.

I guess it depends on what you define the totality of the information to be. If you want to record all frequencies up to 20Khz then if you have regular samples at 40Khz, nothing is lost. If your low-pass filter is insufficient then aliasing may even add things that weren't there originally...

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