Hi.

I just made some ABX tests, I started from q2 up to q6. From q2 to q5 I got 5/5 in every test. And these are the results of the ABX test in wav vs q6:



I have an Audiostorm soundcard and a pair of E2 earphones. I used aotuv beta 5 with impulse_noisetone set to -15. I didn't finished the last test because whatever the result was I knew I needed to do further tweaking on the vorbis encoder options, unfortunately I'm not that techsavvy and I don't know what to do to make vorbis q6 sound a little better. Of course at this level we are talking about very very subtle differences between the loseless and the lossy samples. Soon I will buy a Delta 1010LT soundcard and the Shures SE530 earphones and I'm affraid that could make the subtle differences... less subtle, and I feel that using -q7 would be only brute force.

So I would appreaciate any advice on what to do.

Thanks in advance.

Getting 5 trials correct in an ABX test is not enough for statistical significance. The generally accepted minimum for significance is .05 or a 5% chance that your results are a false positive (i.e., Type I error). Please re-do your test to include at least 10 trials; 15-20 is optimal.

Abx 3/4 ??

Sorry this abx result is not valid. You need 3% or less. If its very difficult to hear , try 2 x 4 trials then add the results. You need to score at least 7/8 or better yet 8/8.

As I said in my first post, I didn't finished the last ABX test, in the other tests I got 3.1% (q2 to q5).

I just wanted some advice on what to tweak on the encoder settings before finishing the q6 test.

How many trials did you do for the other tests?

And try doing it WITHOUT altering the impulse profile options.