4: Applications in Psychoacoustics

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    From LibreTexts, under CC BY-SA 4.0, as the source states it; its equations are written in TeX, which the PDF shows typeset. This page at LibreTexts.

    • 4.1: Human Vocal Fold
      This page explains the function of human vocal folds in sound production, likening them to the sound mechanism of brass instruments. It delves into the physics of their oscillation due to airflow, highlighting the roles of pressure and collision forces. A simplified model shows that while pressure forces enable oscillation, collision forces constrain amplitude. The modified sound produced by the vocal tract adds to the uniqueness of individual voices.
    • 4.2: Threshold of Hearing/Pain
      This page covers auditory thresholds including the threshold of hearing (20 µPa), absolute threshold of hearing (ATH), and threshold of pain, all influenced by frequency. The ATH is the faintest sound detectable, while the threshold of pain refers to harmful sound levels. These thresholds play a role in psychoacoustic audio compression, enabling the exclusion of inaudible sounds in coding. Additionally, aging impacts the ATH curve, especially at frequencies above 2 kHz.

    This page titled 4: Applications in Psychoacoustics was last modified on Sat, 13 Dec 2025 01:25:50 GMT and is shared under a CC BY-SA 4.0 license and was authored, remixed, and/or curated by Wikipedia via source content that was edited to the style and standards of the LibreTexts platform.