Stand alone room audio correction

[everettT]

Don't change the ohm setting on the avrs. As others mentioned try different placement for the fronts and sub if the sound sounds off.

Yes the Aperions are bookshelf and how do you turn off just the size check?

I do reset both front + rears to small and 80Hz.

One thing I have not done is reset my AVR to 6 ohm, it's still @ 8 ohm.Ft + rears are both 6 ohm speakers. Would that make a difference?

 

[PENG]

You need a Ph.D to understand that a 'room correction' software cannot correct anything without knowing the dimensions of a room? And that in-room frequency response provides only a partial explanation without comprehensive phase and impedance data?

Who is Chris K? Too generic for Google. But Floyd's 'research facility' would be more accurately described as 'Canada's facility', the NRC in Ottawa.

I'm genuinely interested in discussing this further, perhaps PM is more appropriate.

I meant Chris Kyriakakis, the co-inventor of Audyssey MultEQ. I believe that with the necessary software and hardware that includes a good MIC, you don't have to tell the AVR what the dimensions are. Besides, unless the room is a rectangle, there will be many figures that need to be input to a system that has to rely on those figures. On the other hand, one can understand the feedback provided by a MIC (designed/built for the specific purpose) in multiple positions of the room should properly be sufficient for the Audyssey system to figure out what to do.

To save you time Googling, I would suggest wiki to start. The first link below is the first ref link in the wiki article on chris K.

http://viterbi.usc.edu/news/news/2004/2004_10_06_kyriakakis.htm
https://en.wikipedia.org/wiki/Chris_Kyriakakis
https://en.wikipedia.org/wiki/Audyssey_Laboratories

 

[TheWarrior]

Besides, unless the room is a rectangle, there will be many figures that need to be input to a system that has to rely on those figures.

That is exactly the problem! You're asking an Omnidirectional mic to make time domain and frequency limiting corrections from a couple listening positions without knowing how the room is influencing what it hears. That can exacerbate a room-based problem!

Further, an omni mic can't accurately measure the upper bass region in room, due to the room's transition frequency(ies). (NOT the Schroeder frequency)

When Audyssey is 'working' it is providing auto setup, nice! But it also has a tendency to roll off the highs above 15 kHz, from what I've measured, and also seen reported.

But every room is different, and since the software doesn't know that, every experience will differ!

 

[lovinthehd]

That is exactly the problem! You're asking an Omnidirectional mic to make time domain and frequency limiting corrections from a couple listening positions without knowing how the room is influencing what it hears. That can exacerbate a room-based problem!

Further, an omni mic can't accurately measure the upper bass region in room, due to the room's transition frequency(ies). (NOT the Schroeder frequency)

When Audyssey is 'working' it is providing auto setup, nice! But it also has a tendency to roll off the highs above 15 kHz, from what I've measured, and also seen reported.

But every room is different, and since the software doesn't know that, every experience will differ!

Audyssey has two main curves, one has the high end turned down (usually called just plain Audyssey or maybe Movie), one is flat (Audyssey Flat or sometimes Music).

Audyssey may not suit you and your sophisticated method that perhaps yields superior results, but the ease of use suits many. Just how do you do it?

 

[TheWarrior]

Audyssey has two main curves, one has the high end turned down (usually called just plain Audyssey or maybe Movie), one is flat (Audyssey Flat or sometimes Music).

Audyssey may not suit you and your sophisticated method that perhaps yields superior results, but the ease of use suits many. Just how do you do it?

Lol! This isn't a conspiracy. It just flies in the face of what is becoming 'conventional', and shouldn't!

Set up takes time, therefore a market was created for 'Auto-setup.' The mistake was in calling it Room Correction. How can software possibly correct an unknown room, using unknown speakers, and be able to specify a master 'curve' to all those unknowns? Who's to say it is even the room that needs correcting? Basic tone controls can 'correct' a lot of problems, but apparently a couple knobs are now considered inconvenient!

I'll say it again: Moving the speakers, inches do make an audible difference, is the easiest thing the user can do!

But you must dedicate the time to achieve the best results. That's my 'sophisticated' method: Trust your ears to know what sounds 'good'. And when that isn't sufficient, in-depth measurements of the room are necessary to fully understand the truth of what is going on in that space. You can teach yourself from the wealth of knowledge on this site, or pay someone to do it for you!

 

[PENG]

That is exactly the problem! You're asking an Omnidirectional mic to make time domain and frequency limiting corrections from a couple listening positions without knowing how the room is influencing what it hears. That can exacerbate a room-based problem!

Further, an omni mic can't accurately measure the upper bass region in room, due to the room's transition frequency(ies). (NOT the Schroeder frequency)

When Audyssey is 'working' it is providing auto setup, nice! But it also has a tendency to roll off the highs above 15 kHz, from what I've measured, and also seen reported.

But every room is different, and since the software doesn't know that, every experience will differ!

You are right, this thing can get complicated, PM is more appropriate.

 

[RichB]

I'll say it again: Moving the speakers, inches do make an audible difference, is the easiest thing the user can do!

But you must dedicate the time to achieve the best results. That's my 'sophisticated' method: Trust your ears to know what sounds 'good'. And when that isn't sufficient, in-depth measurements of the room are necessary to fully understand the truth of what is going on in that space. You can teach yourself from the wealth of knowledge on this site, or pay someone to do it for you!

My own experience with Audyssey is a reduction in the bass frequencies and emphasis on the high end which make the system sound thin. There seems to be some other effects that collapse the sound-stage.

Most people do not measure the results from Audyssey or other REQ systems. They simply run them again and again until they like the result. There is nothing wrong with that but it is not necessarily accurate or "corrected"; It is simply preferred.

I agree. Move your speakers around if you can. Measure with REW (free) and a low cost MIC. There is a limit to what REQ can do so it is best to start with the best placement you can within your environment. Also, if you go the MIC route then PEQ is also capable of dealing with room modes.

- Rich

 

[3db]

It should be called room compensation, not room correction ..

 

[3db]

Yes the Aperions are bookshelf and how do you turn off just the size check?

I do reset both front + rears to small and 80Hz.

One thing I have not done is reset my AVR to 6 ohm, it's still @ 8 ohm.Ft + rears are both 6 ohm speakers. Would that make a difference?

I have sent an email to Yamaha customer support about how to deselect YPAO from checking speaker size as I don't see it described in the manual.

 

[Good4it]

I have sent an email to Yamaha customer support about how to deselect YPAO from checking speaker size as I don't see it described in the manual.

Thanks please keep me/us updated. Hope there's a way!

Any response? 6/15/16

 

[lovinthehd]

Lol! This isn't a conspiracy. It just flies in the face of what is becoming 'conventional', and shouldn't!

Set up takes time, therefore a market was created for 'Auto-setup.' The mistake was in calling it Room Correction. How can software possibly correct an unknown room, using unknown speakers, and be able to specify a master 'curve' to all those unknowns? Who's to say it is even the room that needs correcting? Basic tone controls can 'correct' a lot of problems, but apparently a couple knobs are now considered inconvenient!

I'll say it again: Moving the speakers, inches do make an audible difference, is the easiest thing the user can do!

But you must dedicate the time to achieve the best results. That's my 'sophisticated' method: Trust your ears to know what sounds 'good'. And when that isn't sufficient, in-depth measurements of the room are necessary to fully understand the truth of what is going on in that space. You can teach yourself from the wealth of knowledge on this site, or pay someone to do it for you!

Of course good speaker/sub placement and the room are still the major factors. You can make tweaks to the delay/level/eq manually....or the auto routine may do a better job. I've tried outdoing Audyssey XT32 manually (with what limited eq is available manually) and my ears say Audyssey did a better job than I did (with only the avr tools available). YMMV.