YPAO Yamaha house curve?

[Anglofun]

Afternoon

Could it be that Yamaha has its house curve and it makes this curve happen when using YPAO? Or is it trying to do a flat response? If it is, I am not measuring a flat response through REW when measureing YPAO PEQ.

 

[AcuDefTechGuy]

I think Flat is "flat" and Neutral might be the "house curve". You can also take one of the curves and do manual PEQ.

 

[dolynick]

I haven't used YPAO myself yet but I'm guessing there might be different microphones involved here (assuming YPAO provides it's own) and different positions. Most decent room correction suites are going to request measurements from multiple positions and the results will be tailored as an averaging of the measurements across those positions. If you measure the applied curve at a single position, it's not necessarily going to be perfectly neutral even if the algorithm is capable of completely dealing with a deviation at that frequency (room correction is much better at dealing with peaks than it is with dips).

 

[Anglofun]

I think Flat is "flat" and Neutral might be the "house curve". You can also take one of the curves and do manual PEQ.

So, there is an option between flat and neutral? I never noticed this, where would this be? I use the web app, but if it is on the remote, I can use that too.

Thanks, hope I understood your response correctly!

 

[Anglofun]

I haven't used YPAO myself yet but I'm guessing there might be different microphones involved here (assuming YPAO provides it's own) and different positions. Most decent room correction suites are going to request measurements from multiple positions and the results will be tailored as an averaging of the measurements across those positions. If you measure the applied curve at a single position, it's not necessarily going to be perfectly neutral even if the algorithm is capable of completely dealing with a deviation at that frequency (room correction is much better at dealing with peaks than it is with dips).

Totally get that. It can only do so much. When I measure back the response with REW, it makes very little sense (correction wise) if the curve it is trying to do is flat.

 

[dolynick]

Totally get that. It can only do so much. When I measure back the response with REW, it makes very little sense (correction wise) if the curve it is trying to do is flat.

How many measurement points did you do during YPAO configuration and how far apart were they?

 

[Anglofun]

How many measurement points did you do during YPAO configuration and how far apart were they?

I stopped using multi measure points because I only have a sweet spot and a half. I don't do multiple rows. And, my priority is 2 channel for response.

 

[dolynick]

Multiple points are meant to be each of your seating positions. They're generally recommended to be a few feet off of the main listening position - so as to widen the sweet spot a bit.

At any rate, that does potentially eliminate the position thing. It can be quite dramatic even a foot or two over I have found.

Did you also use the YPAO mic for REW? There's a notable difference in a sweep result between what my ARC mic measures in REW and my UMIK that I normally use with REW.

 

[Anglofun]

Multiple points are meant to be each of your seating positions. They're generally recommended to be a few feet off of the main listening position - so as to widen the sweet spot a bit.

At any rate, that does potentially eliminate the position thing. It can be quite dramatic even a foot or two over I have found.

Did you also use the YPAO mic for REW? There's a notable difference in a sweep result between what my ARC mic measures in REW and my UMIK that I normally use with REW.

I always understood, that the YPAO mic is only useable with the Yamaha receiver. Using a UMIK 1 mic on YPAO is a no no too. According to some it is because there is a filter in the Yamaha (correct me if I am wrong).

All this said, even when I measured multi positions the curve, if flat was the target, was not and the corrections did not lead to flat.

 

[dolynick]

I always understood, that the YPAO mic is only useable with the Yamaha receiver. Using a UMIK 1 mic on YPAO is a no no too. According to some it is because there is a filter in the Yamaha (correct me if I am wrong).

All this said, even when I measured multi positions the curve, if flat was the target, was not and the corrections did not lead to flat.

The pic I found of a YPAO just looks like a regular analog pin connection. Not what you'd want to use for REW but not impossible. Maybe there is more too it, and maybe the AVRs have a filter to offset expected deviations from the YPAO mic built in.

I was more just suggesting that the two mics might not be providing the same baseline measurement in the first place. But even then, it probably doesn't explain all deviation. I don't have any experience with or know enough about YPAO's process to really tell you about any curves it does or doesn't support. I was just suggesting some other possible causes for some of the differences.

 

[Anglofun]

The pic I found of a YPAO just looks like a regular analog pin connection. Not what you'd want to use for REW but not impossible. Maybe there is more too it, and maybe the AVRs have a filter to offset expected deviations from the YPAO mic built in.

I was more just suggesting that the two mics might not be providing the same baseline measurement in the first place. But even then, it probably doesn't explain all deviation. I don't have any experience with or know enough about YPAO's process to really tell you about any curves it does or doesn't support. I was just suggesting some other possible causes for some of the differences.

Very logical thoughts, I did go down that rabbit hole, and I believe it was on this forum that someone pointed out that the Yamaha Mic can only be used on the Yamaha receiver because exactly as you suspected, there are filters to offset and calibrate.

And maybe this is what cause a "house curve" on the Yamaha. Or this is what Yamaha wants, sort of like the HArman curve that is a well liked curve.