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Test 24/96 vs CD resolution, Help appreciated
tigre
post Sep 4 2003, 20:36
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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


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Posts in this topic
- tigre   Test 24/96 vs CD resolution   Sep 4 2003, 20:36
- - Patsoe   Wouldn't it be easier to skip the resampling, ...   Sep 4 2003, 21:21
- - tigre   Thanks for the input. Certainly it would be easier...   Sep 4 2003, 21:42
- - music_man_mpc   Might it be easier to create two spertate files: o...   Sep 4 2003, 22:43
- - Pio2001   Will the 8 bits dithering remove all informaton ? ...   Sep 5 2003, 00:01
- - Continuum   QUOTE (tigre @ Sep 4 2003, 09:36 PM)2. Apply ...   Sep 5 2003, 07:19
- - tigre   QUOTE (Continuum @ Sep 4 2003, 10:19 PM)QUOTE...   Sep 5 2003, 07:30
- - tigre   QUOTE (Pio2001 @ Sep 4 2003, 03:01 PM)Will th...   Sep 5 2003, 07:42
- - Patsoe   I guess you're right, it would be biasing towa...   Sep 5 2003, 09:14
- - tigre   QUOTE (Patsoe @ Sep 5 2003, 12:14 AM)If you h...   Sep 5 2003, 09:32
- - KikeG   I'm planning to setup a similar test, but usin...   Sep 5 2003, 10:16
- - tigre   Hi KikeG! I've been waiting for your appea...   Sep 5 2003, 10:42
- - KikeG   Tigre, about you proposed test, if you want to avo...   Sep 5 2003, 11:01
- - 2Bdecided   In that old thread, I was thinking of CEP being mo...   Sep 5 2003, 11:19
- - tigre   KikeG & 2Bdecided, thanks for the responses. ...   Sep 5 2003, 12:13
- - Mac   QUOTE (tigre @ Sep 5 2003, 06:30 AM)(I don...   Sep 5 2003, 12:45
- - 2Bdecided   I missed the revival of that thread (it was on my ...   Sep 5 2003, 13:32
- - KikeG   QUOTE (2Bdecided @ Sep 5 2003, 11:19 AM)You d...   Sep 5 2003, 14:50
- - Patsoe   QUOTE (tigre @ Sep 5 2003, 09:32 AM)It's ...   Sep 5 2003, 15:06
- - KikeG   QUOTE (Patsoe @ Sep 5 2003, 03:06 PM)It will ...   Sep 5 2003, 16:06
- - KikeG   QUOTE (tigre @ Sep 5 2003, 12:13 PM)I have so...   Sep 5 2003, 16:16
- - tigre   I've found 2 short 24/96 samples: http://64.41...   Sep 5 2003, 17:51
- - Patsoe   QUOTE (tigre @ Sep 5 2003, 05:51 PM)I've ...   Sep 6 2003, 22:40
- - 2Bdecided   Have you tried mail order from somewhere? I'v...   Sep 7 2003, 17:40
- - Patsoe   QUOTE (2Bdecided @ Sep 7 2003, 05:40 PM)Remem...   Sep 7 2003, 21:24
- - 2Bdecided   It would seem the general consensus is that 30-sec...   Sep 8 2003, 11:46
- - tigre   Most likely I'll be able to get this DVD from ...   Sep 9 2003, 11:38
- - Patsoe   I've spent several hours browsing (real life, ...   Sep 9 2003, 13:08
- - tigre   Thanks for the help, Patsoe. I'll have a look ...   Sep 10 2003, 23:46
- - tigre   OK. Finally here's a detailed description of h...   Sep 10 2003, 23:53
- - KikeG   For generating the files, maybe it's a better ...   Sep 11 2003, 08:15
- - tigre   QUOTE (KikeG @ Sep 10 2003, 11:15 PM)For gene...   Sep 11 2003, 08:55
- - KikeG   QUOTE (tigre @ Sep 11 2003, 08:55 AM)About 16...   Sep 12 2003, 17:41
- - Pio2001   QUOTE (KikeG @ Sep 5 2003, 04:50 PM)AFAIK it ...   Sep 16 2003, 20:57
- - nwn   i see you look for 24/96 sound file .. here perhap...   Sep 16 2003, 22:14
- - askoff   QUOTE (Pio2001 @ Sep 16 2003, 11:57 AM)It was...   Sep 18 2003, 19:08
- - tigre   OK. I've got a DVD-V containing 24/96 PCM audi...   Sep 23 2003, 23:32
- - tigre   OK. Finally I've managed to get 24/96 audio fr...   Sep 24 2003, 01:12
- - KikeG   I think a good test sample could be one that would...   Sep 26 2003, 08:02
- - Patsoe   QUOTE (Patsoe @ Sep 6 2003, 10:40 PM)This dis...   Oct 3 2003, 22:34
- - tigre   Hi Patsoe. It would be good to have more samples,...   Oct 4 2003, 08:38


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