<iframe title="42 Audio Illusions & Phenomena! - Part 1/5 of Psychoacoustics" src="https://www.youtube.com/embed/OiW8gzBGz1A?feature=oembed" height="113" width="200" style="aspect-ratio: 1.76991 / 1; width: 100%; height: 100%;" allowfullscreen="" allow="fullscreen"></iframe>
**Duration:** 14:34
**Language:**
**Complexity:**
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# š Personal Notes
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date: 2024-03-20
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# YouTube
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## Description:
-> [Youtube video Link](https://www.youtube.com/embed/OiW8gzBGz1A)
## Summary:
The video is an educational exploration of psychoacoustics, which is the study of how humans perceive sound. It covers various auditory illusions and phenomena that illustrate how our brain interprets sounds in fascinating and sometimes unexpected ways.
- Psychoacoustics is the study of sound perception.
- The series includes illusions and geeky topics about hearing.
- Headphones are recommended for experiencing the effects.
- The video covers binaural beats, demonstrating how tones of slightly different frequencies can create a pulsing effect when played together.
- Pitch circularity is explained using the Shepard-Risset tone, which seems to descend in pitch endlessly.
- The Tritone Paradox reveals how cultural and linguistic backgrounds can influence our perception of which of two tones is higher.
- Tempo circularity is demonstrated with the Risset rhythm illusion, where the tempo seems to slow down indefinitely.
- Combination tones are presented, showing how our brain creates perceived tones from the combination of two different tones.
- The missing fundamental phenomenon is explained, demonstrating how our brain fills in missing low frequencies based on harmonics.
- Otoacoustic emissions are discussed, where the ear itself generates sound, which can sometimes lead to tinnitus.
Topics: **Psychoacoustics**, **Auditory Illusions**