myths and facts about aliasing

Written 10 years ago, more relevant than ever.

Variety Of Sound

A recent trend in the audio producer scene seems to be to judge an audio effect plug-in just by analyzing the harmonic spectrum, which is usually done by throwing a static sine-wave right into the plug-in and then look at the output with a FFT spectrum analyzer afterwards. In this article I’m going to talk about what this method is capable of and where its limitations and problems lie and that aliasing gets confused with a lot of other phenomenons quite often. I’m also clearly showing that this method alone is not sufficient enough to judge an audio plug-in’s quality in a blackbox situation.

a spectrum plot showing noise, harmonic distortion and aliasing

View original post 939 more words


  1. heavymetalmixer says:

    It’s sitll a great article to this day. You mentioned the compressor clamping on the low-end as an example of IMD. Do you have other examples that could occur in the digital domain?

  2. Agreed. I Thoroughly recommend Dan Worrals video on the subject.

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