Clipping of CDs and lossy coded audio

Frank Klemm's K Page

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Samples

Sara K.: Something borrowed (taken from "Closer Than They Appear")
Björk: Bachelorette (taken from "Homogenic")

First is an example for a got leveled CD, second is ugly preclipped audio with a equivalent THD between 8 and 12%.

Note:
Click on images to get a larger version. Reduced size images hide important details due to wiping out small pulses!

Sara K.: Something borrowed

Original (which is K-25.5):

Scaled with setting to K-20 (without clipping prevention):

Proposed playback level by Dolby Labs.
Note the first clippings occure (which are inaudible for me),
so clipping prevention will reduce level by 0.6 dB
Clipping prevention will reduce level for all K+?? . . . K-0 . . . K-20.6

Scaled with setting to K-14 (without clipping prevention):

Proposed playback level for home playback.
First audible clippings for me
Clipping prevention will reduce level by 6.6 dB

Scaled with setting to K-8 (without clipping prevention):

Attacks sounds feeble
Husky Guitar
First audible clippings for me
Clipping prevention will reduce level by 6.6 dB

Scaled with setting to K-2 (without clipping prevention):

Totally overdriven

Scaled with setting to K-0 (without clipping prevention):

Totally overdriven

Scaled with setting to K-0 (without clipping prevention) and scaled back to original volume:

Totally overdriven, compare with original below:

Björk: Bachelorette

Original (which is K-04.5):

Scaled with setting to K-20 (without clipping prevention):

Proposed playback level by Dolby Labs.

Scaled with setting to K-14 (without clipping prevention):

Scaled with setting to K-08 (without clipping prevention):

Scaled with setting to K-02 (without clipping prevention):

Scaled with setting to K-00 (without clipping prevention):

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Last modified: 2001-11-28 Visitors: