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60 Hz Jitter

Samples

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The "Reference" files on this page are identical to the like-named "Reference" files on all other PCABX web site pages.
This means that there are only 9 unique reference files that need to be downloaded from this or any other page.

Please read this license that covers all the music files on this site .

Windows users can download a free program that makes comparison tests easy and scientific by clicking here .

 

Spectral Content Of 16/44 Frequency Response Sample Before Jitter Was Added

Spectral Content Of 16/44 Frequency Response Sample After "-20 dB" 60 Hz Jitter Was Added




Spectral Content Of 16/44 Frequency Response Sample After "-40 dB"  60 Hz Jitter Was Added





Spectral Content Of 16/44 11 KHz Test Tone  Before  Jitter Was Added




Spectral Content Of 16/44 11 KHz Test Tone  After "-20 dB" 60 Hz  Jitter Was Added




Spectral Content Of 16/44 11 KHz Test Tone  After "-40 dB" 60 Hz  Jitter Was Added




Spectral Content Of 16/44 11 KHz Test Tone  After "-60 dB" 60 Hz  Jitter Was Added




Spectral Content Of 16/44 11 KHz Test Tone  After "-80 dB" 60 Hz  Jitter Was Added

 

 

FM Distortion

What FM Distortion Is

 
Music is composed of a collection of enveloped (i.e., modulated over the longer term) tones, some on the musical scale, some not, some harmonically related (frequency multiplied by integers), some not harmonic (aharmonic).
 
FM distortion is nonlinear distortion, so it adds tones to the music. Some of the added tones will be at the same frequency as existing tones. The tones that appear at the same frequency will add or subtract depending on their relative phase. Some of the tones will be at new frequencies.

 

How FM Distortion Sounds

FM distortion is heard two different ways, depending on the circumstances.

 
(1) As a *roughening* of the music. "Roughness" is a sort of sharp muddying effect.
 
(2) As additional, mostly aharmonic tones related to the music, that are added to or subtracted from the tones that are already there. The tones at new frequencies will "muddy" the music, and the tones at existing frequencies may change the timbre of the music.


1.0

60 Hz Jitter  Samples These samples were made by applying 60 Hz jitter to the reference sample.

  1.1 Castanets
    1.1.1 Castanets Analog 44 KHz Test Sample most critical section (0.6 seconds)
(before Jitter was added) 
right click here to download
    1.1.2 Castanets Analog 44 KHz Test Sample most critical section (0.6 seconds)
(after "-20 dB") 60 Hz jitter was added)
right click here to download
 
    1.1.3 Castanets Analog 44 KHz Test Sample most critical section (0.6 seconds)
(after "-40 dB") 60 Hz jitter was added) 
right click here to download
 
    1.1.4 Castanets Analog 44 KHz Test Sample most critical section (0.6 seconds)
(after "-60 dB") 60 Hz jitter was added)
right click here to download
 
    1.1.5 Castanets Analog 44 KHz Test Sample most critical section (0.6 seconds)
(after "-80 dB") 60 Hz jitter was added)
right click here to download
 
  1.2 Piano 1  
    1.1.1 Piano1 Test Sample before Jitter Was Added)
right click here to download
 
    1.1.2 Piano1 Test Sample (after "-20 dB") 60 Hz jitter was added)
right click here to download
 
    1.1.3 Piano1 Test Sample (after "-40 dB") 60 Hz jitter was added)
right click here to download
 
    1.1.4 Piano1 Test Sample (after "-60 dB") 60 Hz jitter was added)
right click here to download
 
    1.1.5 Piano1 Test Sample (after "-80 dB") 60 Hz jitter was added)
right click here to download
 

 

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Windows users can download a program that makes comparison tests easy and scientific by clicking here

This page was  created on 06/01/2000.

This page was  last updated on 06/21/2002 .

(c) Copyright 2000, 2001, 2002 Arnold B. Krueger, All rights reserved

Questions? Please contact the webmaster, chief cook, and bottle-washer: Arny Krueger.