Hello ,
I know that the program has has it's origins in the room tuning and set up of A/V systems and isn't really designed for speaker builder per say , So please forgive me if I'm way off the reservation here ........
I have been reading some of the threads here at hts where the user is aligning subs and deciding what delay to implement so that the subs and mains will acheive better summation.
I followed the link to the pdf about sub alignment that points out that a sub is very much a limited band pass and that its Impulse response cannot strictly be used in time alignment because it contains little high frequency information and is made up entirely of slower( long) sine waves.
The writer suggest using the group delay plots , but mine are no where near as sanitary as those in the pdf !!.
My question is as follows...
I am setting up a mixing desk and will only be monitoring in the nearfeild ( most times). I am measuring where my ears would be . I know that will be the "sweet spot " and that adjustment made to optimize there will/probably/might not sound good or the same elsewhere .....
Can I use a measurment of the woofers and/or SW's that is taken W/O HP filters ?? That is, a fullband impulse.
I know that when I put the X-over back on I will rotate the phase and things will change ... I just basically want to get an Idea of the REAL ACOUSTIC OFFSETS ( Time of travel) so that I can delay the high frequency driver an appropriate amount ...
When I ctrl click and use the right mouse key , I get distances that are wholly inrealistic ; I know that finding the real acoustic center of a driver is dam hard , ( I know my tweeters are no more that a few inches ahead of the woofs for instance , but at the moment REW is saying it's 5 " !!!!
I am using a very good audio interface W/ fast , proven asio drivers and always have the loopback in place and the check box filled for using the loopback .
Should I uncheck the " set T = 0 at IR peak" box ?? in preferences/analysis
I Am using LR xovers and have read that they lose some of their effectivness if the drivers aren't time aligned ...
Once again , what I need most for this paticular facet of my tuning , is the " Time of Flight " . Which Will allow me to calculate distance.
I'm using a rack unit that is for pro sound so I have no automation like an audisey unit or the like.
I will of course use flipped phase null checks too .
Any thoughts about this ??
Thanks for any input:clap:
I know that the program has has it's origins in the room tuning and set up of A/V systems and isn't really designed for speaker builder per say , So please forgive me if I'm way off the reservation here ........
I have been reading some of the threads here at hts where the user is aligning subs and deciding what delay to implement so that the subs and mains will acheive better summation.
I followed the link to the pdf about sub alignment that points out that a sub is very much a limited band pass and that its Impulse response cannot strictly be used in time alignment because it contains little high frequency information and is made up entirely of slower( long) sine waves.
The writer suggest using the group delay plots , but mine are no where near as sanitary as those in the pdf !!.
My question is as follows...
I am setting up a mixing desk and will only be monitoring in the nearfeild ( most times). I am measuring where my ears would be . I know that will be the "sweet spot " and that adjustment made to optimize there will/probably/might not sound good or the same elsewhere .....
Can I use a measurment of the woofers and/or SW's that is taken W/O HP filters ?? That is, a fullband impulse.
I know that when I put the X-over back on I will rotate the phase and things will change ... I just basically want to get an Idea of the REAL ACOUSTIC OFFSETS ( Time of travel) so that I can delay the high frequency driver an appropriate amount ...
When I ctrl click and use the right mouse key , I get distances that are wholly inrealistic ; I know that finding the real acoustic center of a driver is dam hard , ( I know my tweeters are no more that a few inches ahead of the woofs for instance , but at the moment REW is saying it's 5 " !!!!
I am using a very good audio interface W/ fast , proven asio drivers and always have the loopback in place and the check box filled for using the loopback .
Should I uncheck the " set T = 0 at IR peak" box ?? in preferences/analysis
I Am using LR xovers and have read that they lose some of their effectivness if the drivers aren't time aligned ...
Once again , what I need most for this paticular facet of my tuning , is the " Time of Flight " . Which Will allow me to calculate distance.
I'm using a rack unit that is for pro sound so I have no automation like an audisey unit or the like.
I will of course use flipped phase null checks too .
Any thoughts about this ??
Thanks for any input:clap: