HydrogenAudio

Hydrogenaudio Forum => Listening Tests => Topic started by: rvanam on 2004-12-07 08:03:08

Title: MUSHRA
Post by: rvanam on 2004-12-07 08:03:08
Hi All,

I want to know whether there is any available free software for performing subjective tests and which follows the methodology given by ITU-R BS.1534 (i.e. MUSHRA).

I also want to know the approximate cost for CRC's SEAQ software.

-rvanam
Title: MUSHRA
Post by: ff123 on 2004-12-07 15:19:11
ABC/hr is only slightly more complicated than MUSHRA:

http://ff123.net/abchr/abchr.html (http://ff123.net/abchr/abchr.html)

with the added benefit of forcing the listener to distinguish from a hidden reference each time a rating is performed.  The optional hidden anchors are added separately as if they were additional samples to be rated.

ABC/hr also has an ABX module for determining difference only, for extremely subtle artifacting.

ff123
Title: MUSHRA
Post by: rvanam on 2005-01-07 22:19:43
Quote
ABC/hr is only slightly more complicated than MUSHRA:

http://ff123.net/abchr/abchr.html (http://ff123.net/abchr/abchr.html)

with the added benefit of forcing the listener to distinguish from a hidden reference each time a rating is performed.  The optional hidden anchors are added separately as if they were additional samples to be rated.

ABC/hr also has an ABX module for determining difference only, for extremely subtle artifacting.

ff123
[a href="index.php?act=findpost&pid=258286"][{POST_SNAPBACK}][/a]


I want to perform subjective tests using the procedure mentioned in MUSHRA. I also want to avoid the complexity of distinguishing from a hidden reference each time a rating is performed as in ABC/HR. Is it possible to modify ABC/HR to avoid this complexity or are there other freely available tools for MUSHRA?

regards,
rvanam
Title: MUSHRA
Post by: ff123 on 2005-01-08 01:03:40
Quote
Quote
ABC/hr is only slightly more complicated than MUSHRA:

http://ff123.net/abchr/abchr.html (http://ff123.net/abchr/abchr.html)

with the added benefit of forcing the listener to distinguish from a hidden reference each time a rating is performed.  The optional hidden anchors are added separately as if they were additional samples to be rated.

ABC/hr also has an ABX module for determining difference only, for extremely subtle artifacting.

ff123
[{POST_SNAPBACK}][/a] (http://index.php?act=findpost&pid=258286")


I want to perform subjective tests using the procedure mentioned in MUSHRA. I also want to avoid the complexity of distinguishing from a hidden reference each time a rating is performed as in ABC/HR. Is it possible to modify ABC/HR to avoid this complexity or are there other freely available tools for MUSHRA?

regards,
rvanam
[a href="index.php?act=findpost&pid=263691"][{POST_SNAPBACK}][/a]


There is Ivan Dimkovic's "waverate" program, but it is buggy:

[a href="http://faac.sourceforge.net/oldsite/tests.php]http://faac.sourceforge.net/oldsite/tests.php[/url]

Other than that, I don't think there are any freely available MUSHRA-type programs.
Of course, you are free to modify the source code of abc/hr to suit your needs

ff123
Title: MUSHRA
Post by: 2Bdecided on 2005-01-10 11:57:11
If you're using MUSHRA appropriately (i.e. on obviously non-transparent signals) the presence of the hidden reference shouldn't add much time to the experiment - and it will weed out deaf listeners.

I can imagine it will look neater and simpler without the hidden reference, but when running an actual test it's simplicity itself.

Cheers,
David.
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