Intermodulation Distortion In Audio Amplifiers

Intermodulation Distortion (IMD)

https://sound-au.com/articles/intermodulation2.htm#:~:text=IMD%20%28intermodulation%20Distortion%29%20is%20one%20of%20the%20main,as%20well%2C%20and%20the%20converse%20is%20also%20true.

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Intermodulation Distortion (IMD)

https://sound-au.com/articles/intermodulation2.htm

This is intermodulation distortion, and is shown at a representative level for an amplifier with a THD+N (total harmonic distortion plus noise) of around 0.013%. An amplifier with less distortion may show only the 7kHz tone, with the sidebands (they will be present) buried in the noise. The graph shown is somewhat optimistic, with a noise level of about -132dBV (250nV output noise, …

Intermodulation distortion of class D audio amplifier ...

https://ieeexplore.ieee.org/document/7513652

AES E-Library » Transient Intermodulation Distortion in ...

https://www.aes.org/e-lib/browse.cfm?elib=2763

Phase Intermodulation Distortion - Audio Amplifier Design

https://renardson-audio.com/pim.html

I first observed phase intermodulation in an audio amplifier when I was studying electronics at the University of Wales, around 1977, and an example from that time is shown later on this page. My finding then was that in even a simple amplifier …

Audio Amplifiers - HyperPhysics Concepts

http://hyperphysics.phy-astr.gsu.edu/hbase/Audio/amp.html

DISTORTION MEASUREMENT IN AUDIO AMPLIFIERS

https://renardson-audio.com/distortiontest.pdf

EB38: Measuring the Intermodulation Distortion of Linear ...

https://www.ab4oj.com/test/docs/ssb_im.pdf

The measured distortion of a linear amplifier, normally called Intermodulation Distortion (IMD), is expressed as the power in decibels below the amplifier’s peak power or below

ECE 4435 - Operational Amplifier Design

https://leachlegacy.ece.gatech.edu/ece4435/sp10/sp10dp02.html

IM distortion analyzers are usually used to test audio power amplifiers. We will use a non-inverting op-amp amplifier in the lab. The two types of distortion to be analyzed are clipping distortion and crossover distortion. The basic circuits are shown in the figure below. The diodes should be 1N4148.

AES E-Library » Amplitude and Phase of Intermodulation ...

https://www.aes.org/e-lib/browse.cfm?elib=4579

Extensive study of IMD (and THD) distortions on 4 ...

https://www.audiosciencereview.com/forum/index.php?threads/extensive-study-of-imd-and-thd-distortions-on-4-amplifiers-with-different-topology.26942/