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Critical Listening Skills for Audio Professionals by F. Alton Everest

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Auditory filters at work

Talk Tech
In the very act of listening to music, the sound is unconsciously broken down into its component parts by our ear/brain system. But before we can study what the ear does, we must make sure we understand the difference between simple and complex tones.
Sounding the standard A on an electronic oscillator yields what is called a monotone:

The word monotonous, which comes from the words mono and tone, is a good description of this sound—plain and uninteresting.

Sounding the standard A on a good violin yields a much richer sound:

The difference between the pure sine wave of the oscillator ...

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