Hello David, I had the chance to follow your tutorial today with my system: Martin Logan Request + Electrocompaniet amplification + Roon. And I have to admit: what I've been listening to was surreal. For the first time in ages, I can say I'm happy with my system in my living room. Amazing Job
Hello again. What is the point of taking 3 measurements from exact same position that look the same and then creating averages (which also look exactly the same)? Am I missing something?
At the time I was using at multiple measurements from the same location to create vector averages. This was better in my mind than using a single L,R set because the averages reduced the possibility of variation in a single measurement that would otherwise go unnoticed. I basically just did it for peace of mind. Now, with the new way I do this, I only use one left and one right measurement.
Hello David! The information on your channel is very interesting and the truth is that it is very useful to me! I saw that you have 3 published room correction methods and I wanted to ask you which of the three correction methods is the most effective for you and which one do you recommend to correct my home studio room? Greetings from Argentina and sorry for my bad English. Thank you!
There's really only one method, when you really think about it. I just have published a couple different ways of doing the same thing. There are other ways, and within the process you can change things if you want. Experiment with the settings where you understand them. For instance, try leaving all rephase filter banks at minimum phase instead of switching the high frequencies to linear. Export measured vs minphase. Things like that. You can use a single measurement or you can average together several measurements. You can process the group delays and optimize the timing or you can simply stop after you have generated the magnitude filters. The most effective way for me has been using a single measurement and going through method 2. I have been working on a refined version of this for method 3, but I haven't made a video yet.
Hey, David! Awesome tutorial. But I've been reading your gearspace thread & someone had a bright idea (I'm sure u can bring that brightness back in line with your snazzy filters xD) to send you 3 measurements in exchange for some PayPal love. I'd like to jump on that action if possible please. Could I contact you over email to talk about this? Thanks, RH
I use the measure button in the top left corner. I use a sweep with a length of either 256k or 512k. I use an acoustic timing reference with zero timing offset and zero reference level trim. Playback is from REW, sample rate is the same as my playback rate (48kHz for example). When I record the sweeps, I always make sure that the reference chirps are delivered from the same speaker as the sweep. This requires me to switch Output and Ref Output each time I want to measure a different speaker (they should both be the same for each sweep). I've never used the loopback timing reference.
@@davidbrancato Hi David, thanks for the detailed response. Another question regarding excess phase filter. Is it possible to create multiple copies of excess phase filters, i.e. 20-200, 200-2000, 2000-20,000 to be loaded into Rephase? reason I ask is because there is limited slots available in the L/R channels in REW for you to align the 2 graphs when I did the overlay. If that is possible, how should I go about it? The tutorial states to import excess phase as a single file into Rephase, unlike magnitude, where you can fill into multiple banks. Thanks
For some reason I thought I had replied to this. I'm sorry if it never happened. Anyway, there is a way to do this that I've worked out. It's too complicated to type out so I'll put it into a future video. Would you be interested in sending me your mdat? I could use your measurements to make the video.
Hello David,
I had the chance to follow your tutorial today with my system: Martin Logan Request + Electrocompaniet amplification + Roon.
And I have to admit: what I've been listening to was surreal. For the first time in ages, I can say I'm happy with my system in my living room.
Amazing Job
Thank you so much! I’m glad to hear that it made a positive difference!
Hello again. What is the point of taking 3 measurements from exact same position that look the same and then creating averages (which also look exactly the same)? Am I missing something?
At the time I was using at multiple measurements from the same location to create vector averages. This was better in my mind than using a single L,R set because the averages reduced the possibility of variation in a single measurement that would otherwise go unnoticed. I basically just did it for peace of mind. Now, with the new way I do this, I only use one left and one right measurement.
Hello David! The information on your channel is very interesting and the truth is that it is very useful to me! I saw that you have 3 published room correction methods and I wanted to ask you which of the three correction methods is the most effective for you and which one do you recommend to correct my home studio room? Greetings from Argentina and sorry for my bad English. Thank you!
There's really only one method, when you really think about it. I just have published a couple different ways of doing the same thing. There are other ways, and within the process you can change things if you want. Experiment with the settings where you understand them. For instance, try leaving all rephase filter banks at minimum phase instead of switching the high frequencies to linear. Export measured vs minphase. Things like that. You can use a single measurement or you can average together several measurements. You can process the group delays and optimize the timing or you can simply stop after you have generated the magnitude filters.
The most effective way for me has been using a single measurement and going through method 2. I have been working on a refined version of this for method 3, but I haven't made a video yet.
@@davidbrancato Great, I'm going to keep an eye on method 3, but in the meantime I'm going to try the second one you recommended. Thank you so much
Hey, David!
Awesome tutorial. But I've been reading your gearspace thread & someone had a bright idea (I'm sure u can bring that brightness back in line with your snazzy filters xD) to send you 3 measurements in exchange for some PayPal love. I'd like to jump on that action if possible please. Could I contact you over email to talk about this?
Thanks, RH
Of course. Just send me an email.
Hello David, under REW, did you use measure icon on the left top, or did you use RTA record button to measure the various positions?
I use the measure button in the top left corner. I use a sweep with a length of either 256k or 512k. I use an acoustic timing reference with zero timing offset and zero reference level trim. Playback is from REW, sample rate is the same as my playback rate (48kHz for example).
When I record the sweeps, I always make sure that the reference chirps are delivered from the same speaker as the sweep. This requires me to switch Output and Ref Output each time I want to measure a different speaker (they should both be the same for each sweep).
I've never used the loopback timing reference.
@@davidbrancato Hi David, thanks for the detailed response. Another question regarding excess phase filter. Is it possible to create multiple copies of excess phase filters, i.e. 20-200, 200-2000, 2000-20,000 to be loaded into Rephase? reason I ask is because there is limited slots available in the L/R channels in REW for you to align the 2 graphs when I did the overlay. If that is possible, how should I go about it? The tutorial states to import excess phase as a single file into Rephase, unlike magnitude, where you can fill into multiple banks. Thanks
For some reason I thought I had replied to this. I'm sorry if it never happened. Anyway, there is a way to do this that I've worked out. It's too complicated to type out so I'll put it into a future video. Would you be interested in sending me your mdat? I could use your measurements to make the video.