Anyone here using the convolver? Which sample rate are you using for your correction impulse?
Correction results for my new system attached. The corrected curves are generated by convolving the logsweep and recording the resulting file. So this is actual performance not just calculated result.
As the majority of my music is sampled at 44.1 kHz / 16 bit I decided to use a correction impulse at 44.1kHz as any other sampling frequency would be
anyhow resampled at the sampling rate of the music you are playing.
I do not believe that JRiver will resample the actual music stream but only the correction impulse?
What I do not have a good understanding of is whether resampling the correction impulse introduces any negative effects and whether going to the highest rate is the best choice or not.
My microphone does not much over 20Khz (with any level of precision anyhow) so I am wondering whether a 44.1Khz impuls is sufficient.
Cheers
Thomas
Note that a convolver needs an impulse sampled at the same sampling rate of the music, so if the music is sampled at a different rate than the impulse, MC has to take care of that (impulse resampling).
Music sampled at 44.1kHz has a theoretical analog bandwidth of 22050Hz and that's your limit imposed by the sampling theorem. So, in this case an impulse sampled at 44.1kHz is not only sufficient but
mandatory. If you play mostly music with CD quality (16/44.1) as I do, then the impulse sampled at 44.1 is the logical choice.
Also, I've noticed that impulse resampled internally by MC, to play music at higher sample rate, is transparent enough in terms of sound quality even if an option to
store in MC impulses for the various sample rates would be highly desirable. IMHO MC's convolver is sonically the best I've heard.
BTW: your measured curve with correction shows an excellent linearity. Congratulations!
