I had a question about generated Speech Shaped Noise.
They also provide code to calculate the long-term average speech spectrum. And according to the document I generated a Speech shaped noise already.
But, there some problem here. I use the code as below to generated SSN.
where ltass as the Speech's LTASS that I used, and npts as the sample points of the speech shaped noise that I want to create. This is to make a FIR filter which had the response that same as the LTASS, then convoluted the FIR filter and white noise to generated a noise which had the same LTASS as speech.
After all, I calculated the Speech shaped noise's LTASS.
As we can seen, the red line is Speech's LTASS and blue line is SSN's LTASS. Although they have same trend, but the SSN's amplitude was lower then Speech. They speech which I used to calculated LTASS are 320 sentences and all of those RMS are 0.075. And the SSN also adjust RMS to 0.075 to calculated LTASS.
I didn't know that this is normal result or I did wrong at somewhere?
Appreciate your time reading my question.