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Now while my intuition would certainly say that autocorrelation is a good candidate property to be used in (lossless) audio compression, I remain sceptical. It
by dtech 12y ago
Now while my intuition would certainly say that autocorrelation is a good candidate property to be used in (lossless) audio compression, I remain sceptical.
It is certainly not a recently discovered or difficult concept to grasp, so if it was that useful I would think that it was already included in things like FLAC...
- dspig 12y agoHaving tried similar things myself, while autocorrelation looks useful for repeating waveforms, real waveforms at any point usually have more in common with the preceding few samples than the same point in the previous cycle (e.g. Using LPC to predict the next sample based on the previous ones). One reason for this is the cycle length will usually not be a whole number of samples so you would have to interpolate between samples to find the same point in a previous cycle, and even then it's not an improvement over LPC.
- diydsp 12y agoYes indeed. In fact one of the key reasons music appeals to the mind is that it's just entropic enough to supply the brain with continuous new artifacts to challenge its compression/organization scheme. Btw, I like your handle. What kinds of things have worked on? You should post some links in your profile!