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Are quality IEMs wasted on 192kbs MP3's? - Page 3

post #31 of 34
Quote:
Originally Posted by redrich2000 View Post
 

I'm pretty sure the app volume matches, they sounded identical volume-wise. The app limits you to 5 tests per run.

What are your thoughts on my impression that there was more space around the lossless version?

 

Unfortunately there is insufficient evidence to draw a conclusion.  Again - without knowing the app I can't make comments on it.  I do know the Foobar program and extensions - a lot of people have used it.  It matches to within 0.1 dB, is true double blind (abx), and allows you to have a decent number of tests.  I usually use 15.

 

From your original thread ..... you had results of 3/5, 5/5, 3/5 and 1/1.  Although quoting 60%, 100%, 60%, 100% looks significant - in reality for the small number of tests performed, it actually points more toward the probability of 'guessing' rather than statistically proving the difference.

 

For me personally - I can't tell the difference, and have yet to meet anyone that can (as long as they come from the same master, and were transcoded without introducing artifacts/errors) for normal listening.  There are some samples over on hydrogenaudio - where specific tracks have been abx'd - but these specific tracks are very few and takes trained listeners to ehar them.  Over there - they do realise (for the main part) that for general listening, properly transcoded 320 kbps mp3 or 256aac are essentially transparent.

 

However - I'm always open to new discovery.  I'm just naturally skeptical without the evidence ;)

 

You have anyone else close to you (say within the Sydney audio community) that you could have a group conduct a series of blind abx's - preferably using Foobar?  That would be fascinating!

post #32 of 34
Quote:
Originally Posted by Brooko View Post
 

 

Unfortunately there is insufficient evidence to draw a conclusion.  Again - without knowing the app I can't make comments on it.  I do know the Foobar program and extensions - a lot of people have used it.  It matches to within 0.1 dB, is true double blind (abx), and allows you to have a decent number of tests.  I usually use 15.

 

From your original thread ..... you had results of 3/5, 5/5, 3/5 and 1/1.  Although quoting 60%, 100%, 60%, 100% looks significant - in reality for the small number of tests performed, it actually points more toward the probability of 'guessing' rather than statistically proving the difference.

 

For me personally - I can't tell the difference, and have yet to meet anyone that can (as long as they come from the same master, and were transcoded without introducing artifacts/errors) for normal listening.  There are some samples over on hydrogenaudio - where specific tracks have been abx'd - but these specific tracks are very few and takes trained listeners to ehar them.  Over there - they do realise (for the main part) that for general listening, properly transcoded 320 kbps mp3 or 256aac are essentially transparent.

 

However - I'm always open to new discovery.  I'm just naturally skeptical without the evidence ;)

 

You have anyone else close to you (say within the Sydney audio community) that you could have a group conduct a series of blind abx's - preferably using Foobar?  That would be fascinating!

 

What do you use for transcoding?

post #33 of 34

dbpoweramp (http://www.dbpoweramp.com/dmc.htm)

 

It was actually included in that link I originally left (regarding setting up an abx).  It lists all the software I use - http://www.head-fi.org/t/655879/setting-up-an-abx-test-simple-guide-to-ripping-tagging-transcoding.

post #34 of 34
Quote:
Originally Posted by Brooko View Post
 

dbpoweramp (http://www.dbpoweramp.com/dmc.htm)

 

It was actually included in that link I originally left (regarding setting up an abx).  It lists all the software I use - http://www.head-fi.org/t/655879/setting-up-an-abx-test-simple-guide-to-ripping-tagging-transcoding.

Okay, that's supposed to be coming to mac this year. I might do some more playing around the with the mac app I have and see how I go.

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