[SoX-devel] spectrogram

[Markus G. <mar...@ph...>]

Hello,

I am new on this list and I have a question.

The source code for the spectrogram includes the following line:

double dBFS = 10 * log10 ( p > magnitudes [ i ] * p-> block_norm ) ;

I'm not sure, but the product p-> magnitudes [ i ] * p-> block_norm
describes an amplitude spectrum and not a power spectrum, right?

If so, then it should be 20*log10(...) instead 10*log10(...) with an
output displayed in dBFS.

I would be grateful for an explanation, thank you.

Markus Glugla