[cdp] fastconv and soundfile peak data

[Peter P.]

Hi list,

convolving two normalized audio files and specifying the float -f flag as follows
 fastconv -f in1.wav in2.wav out.wav
will create a 32bitFloats out.wav and report that it is (in my case) 8.11 dB to loud and should be rescaled by 0.3932460710. 
Interestingly sfprops will report amplitude differently for this out.wav as
 CH 0: 1076019072.000000 (180.64dB) at frame    467414:  10.5990 secs

The unix commandline tool sndfile-info reports this peak amplitude correctly as 8.11 dB.

Furthermore, running fastconv without the -f flag
will have it report 
 PEAK values:8.20
 CH 1:   1.0000 (-0.00 dB)       at frame      16111 :   0.3653 secs
Is this supposed to mean that there has been a 8.20 dezibel peak in the
processing, and that it got clipped to 0dBFS?

Does fastconv differ from the other programs in the position of the -f flag before any infiles and not in front of an outfile as -fout.wav?

By the way, is there a cdp program that calculates peak amplitude data
for an infile without any other processing?

Thanks!
Peter