even those who claim not to hear the delays will find this intresting:
two meassurements, one minimum phase corrected, the other linear phase corrected. they are basicly similar in the 500ms window:
View attachment 109862
now look what happens if we put those two into a 5 cycle freq. d
ependent window
View attachment 109863
the green is the phase correted. it is not perfect because else pre-delay occures
if anybody thinks this is faked, I post the mdat
I still don't find the frequency dependent windowed SPL magnitude graphs all that informative. It's far better to look at the wavelet transform if you want to see the obvious improvement in both the time and frequency domains at the same time.
There's no direct ability to apply windowing in the wavelet view of REW (wish it had more filtering options), but you can export the 'windowed response' and reload it later if so desired:
KH120 + F12 sub
This was from a previous
simple listening experiment that I did.
Didn't use a single linear phase xo filter, but several banks from rePhase's paragraphic phase EQ.
BTW, I found the delay
in this case with streamed videos marginally acceptable.
Enough correction was applied to significantly reduce time spread/lag seen in the wavelet. I found the correction audibly better (
less dull, a bit "brighter") than what's default. Dunno how this holds with longer listening distances and with lots of room reflections which is the reality in many home living room situations.
Further reading on the advantages of wavelet analysis in loudspeaker testing:
Time-Frequency Characterization of Loudspeaker Responses Using Wavelet Analysis
A Spectrogram Display for Loudspeaker Transient Response
*Okay, so I used more banks in rePhase a bit further and added one additional PEQ for the sub bass and this looks a little better:
**Not quite sure how visible "pre-ringing distortion" should be expected in the following views:
Some added pre-ringing in the bass I suppose...
To anyone who may have any idea, please do tell if there's anything that may indicate "
bad pre-ringing" in the measurements. I've only seen/heard one or two extreme case examples. Haven't myself been able to notice after over an hour of listening to regular bass heavy music -- thus far anyway.