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Hain · 05-12-2008, 06:58 AM

Quote:

Originally Posted by Lak

Better than FLAC... it's also offered in 24/96!! For free!! That's obscene, mate.

Don't get too excited.

Quote:

Originally Posted by 'Alex B' date='May 6 2008, 20:25' post='563666' Hydrogen Audio

Surprisingly the 96/24 version appears to be more compressed and clipped. Something must have gone terribly wrong.

Here is an example - Amplitude statistics and waveform screenshots from Adobe Audition:

44.1 kHz 16-bit, Track: 10 Demon Seed, passage: 3 min 50 s - 4 min 00 s

Left Right
Min Sample Value: -32766 -32766
Max Sample Value: 32765 32765
Peak Amplitude: 0 dB 0 dB
Possibly Clipped: 0 0
DC Offset: -.037 .013
Minimum RMS Power: -8.42 dB -5.46 dB
Maximum RMS Power: -5.15 dB -2.08 dB
Average RMS Power: -6.41 dB -4.15 dB
Total RMS Power: -6.38 dB -4.06 dB
Actual Bit Depth: 16 Bits 16 Bits

Using RMS Window of 10000 ms

96 kHz 24-bit, Track: 09 The Four of Us are Dying, passage: 3 min 50 s - 4 min 00 s

Left Right
Min Sample Value: -32768 -32768
Max Sample Value: 32768 32768
Peak Amplitude: .01 dB 0 dB
Possibly Clipped: 75 439
DC Offset: -.099 .038
Minimum RMS Power: -7.64 dB -4.06 dB
Maximum RMS Power: -3.39 dB -.61 dB
Average RMS Power: -4.83 dB -2.76 dB
Total RMS Power: -4.8 dB -2.7 dB
Actual Bit Depth: 24 Bits 24 Bits

Using RMS Window of 10000 ms

(Both songs are the same. As said before, there appears to be a naming error.)

There is something wrong will the 24/96 WAVs were it seems they are just sampled from the 16/44 files.

Quote:

Originally Posted by 'SebastianG' date='May 5 2008, 21:53' post='563477' HA

Quote:

Originally Posted by 'Axon' post='563471' date='May 5 2008, 23:37' HA

FLAC -5 gives an average bitrate of 1822kbps. Is that consistent with 16/96 (padded)?

I just tried on track 5:

Code:

-rw-r--r--   48096110 2008-05-05 23:48 05-2496-16.flac
-rw-r--r--  109307656 2008-05-05 23:48 05-2496-16.wav
-rw-r--r--   48400191 2008-05-05 21:06 05-2496.flac
-rw-r--r--  163974520 2008-05-05 21:06 05-2496.wav

the "-16" version is just truncated to 16 bits (no dithering) and compresses roughly to the same size. Within the sections I checked via hexdump you can see that every third byte is a zero byte. So, it looks like its mostly only 16 effective bits -- at least for track 5.

Other than that the spectrum shows some sounds above 24 kHz which are likely to be aliasing -- maybe due to bad resampling within one of the tools he used (ie sampler).

I'd say the 24/96 version is a waste of bandwidth assuming this applies to all tracks.
I like the album, though. Gonna keep the 44kHz 16bit FLAC versions...

Cheers,
SG

Taken from HA - http://www.hydrogenaudio.org/forums/...howtopic=63086