Test 24/96 vs CD resolution, Help appreciated Options

[tigre]

Hi.

At afterdawn forums there is a new high resolution audio forum. Wilkes, a guy who has much experience in this field (e.g. rips vinyl to DVD-A AFAIK) thinks he can hear differences. So I asked him to do a blind test and he said he's ready.

My idea how this should be performed:

1. Take some audio sample(s) recorded at 24/96

2. Apply fb2k's scan per-file tack gain to avoid clipping and too low volume.

3. Create "A" sample(s) by using fb2k's diskwriter, 24/96 resolution, trackgain used.

4. Convert "A" to "A_downsampled": 16/44.1 using fb2k's diskwriter, noiseshaped dither, slow resampling

5. Create "B" by "A_downsampled" to 24/96 using fb2k's diskwriter, slow resampling, dither not important.

6. Use KikeG's fileABX to create randomized files from "A" and "B"

7. Author a DVD-A using the randomized files

8. Try to ABX


This should be about the capabilities of the formats, not about quality of DACs, mastering quality of different formats etc.

I'd like to know your ideas and suggestions of you about this.

2 1/2 Questions: Will fb2k's resampler give good results? Especially I'm concerned about downsampling and the filters applied there (-> aliasing). Or would it be better to use e.g. CEP at least for downsampling, maybe even to apply a lowpass manually? (which one?)

Thanks.

Cheers tigre

This post has been edited by tigre: Sep 4 2003, 20:37