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Intermodulation - Wikipedia
https://en.wikipedia.org/wiki/Intermodulation#:~:text=Measurement%20Intermodulation%20distortion%20in%20audio%20is%20usually%20specified,in%20decibels%2C%20as%20is%20common%20with%20RF%20work.
Intermodulation Distortion (IMD)
https://sound-au.com/articles/intermodulation2.htm
Intermodulation Effects The effects of harmonic distortion are generally benign, provided the total measured distortion is less than 0.01%. In some cases it can be greater without becoming audible, but anything over 0.5% is decidedly 'lo-fi' (as opposed to 'hi-fi').
Intermodulation Distortion (IMD) Sound Test - Audio Check
https://www.audiocheck.net/testtones_imd.php
Intermodulation Distortion (IMD) Sound Test Background Intermodulation distortion (IMD) measures the level of unwanted combinations of different frequencies found in the input signal. IMD adds components to the sound that are not found in the original signal. This effect results from non-linearities in your audio system.
Intermodulation Distortion - Klippel
https://klippel.de/know-how/measurements/nonlinear-distortion/intermodulation-distortion.html
Intermodulation distortion can easily be detected by using a two-tone signal with varying frequencies of the excitation tones (“bass tone sweep” or “voice tone sweep”). The figure to the left illustrates the interpretation of the intermodulation distortion measurement using a fixed low frequency tone f 1 and a high frequency tone f 2 which is varied over the audio band (“voice …
DISTORTION MEASUREMENT IN AUDIO AMPLIFIERS
https://renardson-audio.com/distortiontest.pdf
measurement of intermodulation distortion (i.m.d.) in which input frequencies f1 and f2 generate distortion at frequencies nf1 + mf2 where n and m are positive or negative integers. The advantages of such measurements are: 1). Provided the two signal sources used are connected in such a way as to avoid any significant interaction the signal
AES E-Library » Intermodulation Distortion Measurement
https://www.aes.org/e-lib/browse.cfm?elib=738
Two basic methods of distortion measurement are commonly used, namely (a) Single-signal harmonic distortion measurement and (b) two-signal intermodulation tortion measurement, dis- SINGLE SIGNAL METHOD The single-signal method is the simplest, but it has an inherent difficulty in that a signal having a very low distortion content is a prime necessity.
Understanding Intermodulation Distortion Measurements ...
https://www.electronicdesign.com/technologies/communications/article/21798494/understanding-intermodulation-distortion-measurements
Intermodulation distortion is one of the most interesting signal analyzer measurements. Often abbreviated IMD, it is an important metric of linearity for a wide range of RF and microwave...
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