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Winamp EQ Differences
ScorLibran
post Sep 29 2003, 17:54
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WAV outputs of Nine Inch Nails Ringfinger using...

[Default Winamp EQ and Crossfeed Plug-in] > Ringfinger~OldEQ.wav

[Shibatch EQ and 4Front Headphones DSP] > Ringfinger~NewEQ.wav
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ScorLibran
post Sep 30 2003, 05:53
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Removed post until I can actually upload new version...

This post has been edited by ScorLibran: Sep 30 2003, 06:17
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ScorLibran
post Sep 30 2003, 06:26
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New sample, Joey Stuckey Take A Walk In The Shadows.

Three sample files, all of the first 29.5n seconds of song. Note that timing and duration are not matching on all samples as Winamp buffering prevented playback start at the exact same moment of writing the WAV output. Anyway, this test is intended as a comparison of personal preference of sound quality as affected by sound processing instead of for the detection of artifacts. I started with the Vorbis-encoded file rather than going back to PCM WAV because it's intended as a "real world", everyday listening example when comparing various equalization and DSP approaches.

These settings are intended for making headphone listening sound as close to the speaker/subwoofer experience as possible, and should be played back without any EQ or DSP as the samples (except for the reference) are already equalized and processed accordingly.

All samples came from the same track encoded in Ogg Vorbis (Post 1.0 CVS) -q 4.25. The samples were output from Winamp using each EQ/DSP type to PCM WAV using Nullsoft Disk Writer plug-in v2.0c, cut in EAC 0.95prebeta3, compared in ABC/HR, then transcoded to FLAC 1.1.0 for "packaging".

Take A Walk In The Shadows (NoEQ) Cut.wav - Reference with no EQ and no DSP. (Keep in mind that even the reference was originally encoded in Vorbis, so this is not a lossless reference sample.

Take A Walk In The Shadows (OldEQ) Cut.wav - Sample using the old equalization method of Winamp EQ with naivesoftware's crossfeed DSP plug-in.

Take A Walk In The Shadows (NewEQ) Cut.wav - Sample using new equalization method of ShiBatch's EQ plus 4Front Headphones DSP.

A screenshot from Goldwave showing the three files side-by-side for a visual comparison of amplitude variances, plus ABC/HR test results are included.

Files are attached to following posts...

This post has been edited by ScorLibran: Sep 30 2003, 08:20
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ScorLibran
post Sep 30 2003, 06:31
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Reference.

2-second duration.

(The largest currently possible upload with my ISP that I've tried so far. Sorry.)

This post has been edited by ScorLibran: Sep 30 2003, 07:55
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Attached File  takeawalkintheshadowsnoeqverycut.flac ( 0bytes ) Number of downloads: 22
 
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ScorLibran
post Sep 30 2003, 07:53
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Test Sample #1 (OldEQ).

2-second duration.
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Attached File  takeawalkintheshadowsoldeqverycut.flac ( 0bytes ) Number of downloads: 6
 
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ScorLibran
post Sep 30 2003, 07:56
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Test Sample #2 (NewEQ).

2-second duration.
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Attached File  takeawalkintheshadowsneweqverycut.flac ( 0bytes ) Number of downloads: 3
 
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ScorLibran
post Sep 30 2003, 08:02
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Goldwave screenshot showing all three samples for comparison.
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ScorLibran
post Sep 30 2003, 08:18
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ABC/HR test results.


Edit; Sorry...I just realized the names of the files I used with ABC/HR don't match the names of the test samples I posted here. I tested the WAV files, then (with no further modification) encoded them to FLAC and had to rename them for uploading. Still, you can identify them by "NoEQ", "OldEQ" and "NewEQ". I did finally have to cut them from 29-seconds to 2-seconds to make them uploadable. Maybe I can upload the full 29-second samples 2-seconds at a time... rolleyes.gif

This post has been edited by ScorLibran: Sep 30 2003, 09:47
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Attached File  WinampEQDSPPrefs.txt ( 0bytes ) Number of downloads: 21
 
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ScorLibran
post Oct 1 2003, 08:42
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Headphone bass test #1.

File: 01_Trip_Like_I_Do__cut_.flac
Duration: 15 seconds
Extraction: Exact Audio Copy 0.95prebeta3, secure mode enabled, C2 disabled, caching disabled
Waveform "Cutting": EAC 0.95pb3 Waveform (Sound) Processing
Gain Adjustment: Wavegain 1.2, 89.0dB
Encoding: FLAC 1.1.0, -8

Reference bass notes at (approx.) timemarks:

00:04 Very hard to detect on headphones I've tried so far.
00:08 Likewise as 00:04 timemark.
00:12 Louder, not as hard to detect as the previous notes, longer sustain.

This post has been edited by ScorLibran: Oct 1 2003, 09:18
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Attached File  01_Trip_Like_I_Do__cut_.flac ( 0bytes ) Number of downloads: 29
 
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ScorLibran
post Oct 1 2003, 09:10
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Headphone bass test #2.

File: 04_High_Roller__cut_.flac
Duration: 16 seconds
Extraction: Exact Audio Copy 0.95prebeta3, secure mode enabled, C2 disabled, caching disabled
Waveform "Cutting": EAC 0.95pb3 Waveform (Sound) Processing
Gain Adjustment: Wavegain 1.2, 89.0dB
Encoding: FLAC 1.1.0, -8

Reference bass notes at (approx.) timemarks:

00:02 Fairly hard to detect on headphones I've tried so far.
00:07 Likewise as 00:02 timemark.
00:13 Likewise as 00:02 timemark.
Attached File(s)
Attached File  04_High_Roller__cut_.flac ( 0bytes ) Number of downloads: 22
 
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