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Old 24 June 2005, 12:17 am   #16
Oblomov
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Join Date: Nov 2004
Posts: 3
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I have the same results here with the Liszt sample. That is to say, without being the slightest familiar with the Listz_choral sample, --quality 6 --ltq 260 seemed at first hearing quite transparent to me, where --qualty 5, --quality 5 --ltq 250 and --quality 6, obviously were not transparent.

Code:
ABC/HR for Java, Version 0.5a, 24 juni 2005
Testname: mpc --ltq 2xx test

Tester: 

1R = C:\Test\003 Liszt_Choral.q5ltq250.wav
2R = C:\Test\002 Liszt_Choral.q5.wav
3L = C:\Test\004 Liszt_Choral.q6.wav
4L = C:\Test\005 Liszt_Choral.q6ltq260.wav

---------------------------------------
General Comments: 
---------------------------------------
1R File: C:\Test\003 Liszt_Choral.q5ltq250.wav
1R Rating: 2.1
1R Comment: 
---------------------------------------
2R File: C:\Test\002 Liszt_Choral.q5.wav
2R Rating: 1.0
2R Comment: 
---------------------------------------
3L File: C:\Test\004 Liszt_Choral.q6.wav
3L Rating: 3.0
3L Comment: 
---------------------------------------

ABX Results:
Original vs C:\Test\005 Liszt_Choral.q6ltq260.wav
    2 out of 8, pval = 0.964
Original vs C:\Test\003 Liszt_Choral.q5ltq250.wav
    8 out of 8, pval = 0.0030
Original vs C:\Test\004 Liszt_Choral.q6.wav
    8 out of 8, pval = 0.0030


---- Detailed ABX results ----
Original vs C:\Test\005 Liszt_Choral.q6ltq260.wav
Playback Range: 00.000 to 21.638
    1:56:04 AM f 0/1 pval = 1.0
    1:56:14 AM f 0/2 pval = 1.0
    1:56:32 AM f 0/3 pval = 1.0
    1:56:38 AM p 1/4 pval = 0.937
    1:56:53 AM p 2/5 pval = 0.812
    1:57:00 AM f 2/6 pval = 0.89
    1:57:17 AM f 2/7 pval = 0.937
    1:57:24 AM f 2/8 pval = 0.964

Original vs C:\Test\003 Liszt_Choral.q5ltq250.wav
Playback Range: 00.000 to 21.638
    1:51:13 AM p 1/1 pval = 0.5
    1:51:19 AM p 2/2 pval = 0.25
    1:51:22 AM p 3/3 pval = 0.125
    1:51:26 AM p 4/4 pval = 0.062
    1:51:29 AM p 5/5 pval = 0.031
    1:51:34 AM p 6/6 pval = 0.015
    1:51:38 AM p 7/7 pval = 0.0070
    1:51:47 AM p 8/8 pval = 0.0030

Original vs C:\Test\004 Liszt_Choral.q6.wav
Playback Range: 00.000 to 21.638
    1:52:57 AM p 1/1 pval = 0.5
    1:53:04 AM p 2/2 pval = 0.25
    1:53:23 AM p 3/3 pval = 0.125
    1:53:32 AM p 4/4 pval = 0.062
    1:53:40 AM p 5/5 pval = 0.031
    1:53:46 AM p 6/6 pval = 0.015
    1:53:51 AM p 7/7 pval = 0.0070
    1:53:54 AM p 8/8 pval = 0.0030
Obviously, Guruboolez, you can do better, and I hope you forgive me my crippled ears. ops:

As for the suggestion as posted on HA.org to use --ath_gain -14, or something in that style, for normal classical music with the occasional pianissimo passage, I don't think that is a wise swith to use, because it would lower the ath_scale with 14 db in all subbands equally, even at 20 khz, which would not lead to audible gain, but to bitrate bloat in frequency-regions where it makes no audible difference, imho.


Cheers,

Tim (Tim Mervielde on HA.org)
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