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Dirac Live, FIR-filter - Yes, No?

Flak

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#81
Salve Flavio! :)

Heh.. So much text and yet so little usefull information.

In my opinion it would be very usefull if Dirac would implement control measurement procedure so users can verify how good of a job is filter generated by Dirac actually doing. As long as that doesn't exist users are left on their own and the only thing they can do is either measure the log sweep in same 9 points and average them or they can apply RTA moving microphone method in the same space within those 9 points. In my opinion and in my experience both of these methods would result in a very similar curve and would provide very good insight of Diracs results.
Ciao Krunok :)

my opinion is different as I think instead that the document that I linked provides a wealth of very valuable information.
One can understand that the frequency (or magnitude) response doesn't tell the whole story with reference to perceived listening results,
time and geometry play an important role.
For example, late reflections should not be corrected and Dirac Live's algorithm can do that thanks to the fact that those late reflections are late because they are bounced by several walls and change with position, Dirac will not correct those as this will be shown by the different measurements in different positions.
It also seems to me that Amirm correctly commented about side reflections in another thread, the subject is discussed in the section "Some reflections are good, some bad"
A measurement in the frequency domain completely removes the information in the time domain and filters that provide the same exact frequency response can have significantly better or worse listening results... tonal balance is important but it's not all, a slightly less linear response can be audibly better depending on a number of factors.
In a few words I think that this document provides much more than "little usefull information" and might even give away more info than necessary about the way Dirac Live works : http://diracdocs.com/on_room_correction.pdf

That's anyhow for our coforumers to judge, Flavio
 
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Krunok

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#82
Ciao Krunok :)

my opinion is different as I think instead that the document that I linked provides a wealth of very valuable information.
I didn't express myself precisely - what I meant was that the document you linked has been available for some time and I'm sure most of the folks here interested in DRC already read it. In other words I wanted to say that the document you linked is nothing reall new.

Ciao Krunok :)
.. tonal balance is important but it's not all, a slightly less linear response can be audibly better depending on a number of factors.
That is true and nobody argues with that. It would be nice if you would explain here in more details that "number of factors". :)

However, I still think it would be beneficial for all your users to see what effects Dirac correction had on FR and IR by means of control measurement via before and after comparison graphs. Do you think your marketing department would allow that feature to be available in next version? :)

P.S. pls don't get me wrong, I am not criticising your product, for which I think it is probably one of the best on the market today. I am merely suggesting a feature that I believe would be an improvement to the current functionality.
 

Flak

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#83
I didn't express myself precisely - what I meant was that the document you linked has been available for some time and I'm sure most of the folks here interested in DRC already read it. In other words I wanted to say that the document you linked is nothing reall new.



That is true and nobody argues with that. It would be nice if you would explain here in more details that "number of factors". :)

However, I still think it would be beneficial for all your users to see what effects Dirac correction had on FR and IR by means of control measurement via before and after comparison graphs. Do you think your marketing department would allow that feature to be available in next version? :)

P.S. pls don't get me wrong, I am not criticising your product, for which I think it is probably one of the best on the market today. I am merely suggesting a feature that I believe would be an improvement to the current functionality.
Thanks for clarifying and agreed on all points :)
and yes, from a marketing perspective a separate measurement session could be an interesting addition/selling feature even if the measurements will not be significantly different from the current computed ones
 

Krunok

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#84
Thanks for clarifying and agreed on all points :)
and yes, from a marketing perspective a separate measurement session could be an interesting addition/selling feature even if the measurements will not be significantly different from the current computed ones
Are you able to share any details about how do you perform IR correction?
 

Flak

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#85
I cannot share more info than available in that document but I can add that the latest Dirac Live 2.x algorithm might even slightly compromise on FR response of one of the speakers in favor of the best possible phase coherence between them that is important for imaging.
 

Krunok

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#86
I cannot share more info than available in that document but I can add that the latest Dirac Live 2.x algorithm might even slightly compromise on FR response of one of the speakers in favor of the best possible phase coherence between them that is important for imaging.
Interesting. I gues achieving best possible phase coherence is important only above Schroeder frequency, or..?
 

Flak

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#88
Good to see you here Flavio. I upgraded your title. Welcome to the forum. :)
Thanks Amirm,
your unbiased testing and the knowledgeable information from you and other forumers are quite informative and interesting.
Keep up the good work!
 
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