Retrieving most similar audio

[JuanFMontesinos]

Hi,
I was wondering if you are aware of a quick way of finding the most similar constellation from a set. I guess it's like a pointcloud matching but maybe there is something done that already takes shifting into account.

Thanks,
Juan

[Aaron-AALG]

Hello Juan,

In statistics, there exist multiple concepts for computing pairwise comparisons between samples. For example, you can search the notions of metric, divergence, or similarity measure. Let's assume you have a constellation map (or audio fingerprint) $A$ and you want to determine which sample of a set $[X_i{]}_{i=1}^n$ is the "most similar" to $A$. Then, computing $\mathrm{\Phi }(A,X_i)$ could be a simple solution for your problem if we consider $\mathrm{\Phi }$ as our statistical function of "similarity".

It is worth mentioning that this is not a trivial task, since there is vast literature about this concern. Also, the selection of such a statistical function and its implementation depends on what your project is.

I hope you find it helpful,
Aarón.