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Psychoacoustics basics and MP3 quality

It is not possible to discuss sound and sound reproduction quality without a basic understanding of human hearing specifics.

The scientific term for this topic is Psychoacoustics. According to Wikipedia Psychoacoustics is the branch of psychophysics involving the scientific study of sound perception and audiology—how the human auditory system perceives various sounds. More specifically, it is the branch of science studying the psychological responses associated with sound.

I this video we will cover two topics Psychoacoustics and MP3 quality versus CD based on Psychoacoustics principles.

Link for self-hearing test

00:00:00 Psychoacoustics meaning

00:00:59 Hearing as sensors

00:01:48 Hearing test

00:04:07 Brain sound processing

00:09:18 Sources to learn about audio quality topics

00:14:30 Psychoacoustics model

00:24:59 Threshold of hearing

00:28:12 A-weighted filter

00:28:39 How loud we should listen

00:30:24 Frequency masking

00:32:18 Temporal masking

00:33:51 MPEG coding algorithm

00:39:00 MP3 quality

00:45:01 Spotify settings

00:46:37 Test music selection

00:47:30 Baseline figures

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