Human Sound
Sound is produced in the larynx; filtering it in the vocal tract produces formants and phonemes. The acoustics, mechanics and some neurobiology of hearing. Pitch perception.
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Reflecting waves gives standing waves, which can be resonances. Standing waves on strings and in pipes and plates.
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Superposing waves with different frequencies gives beats and Tartini tones. Removing beats gives consonance. Tuning consonances gives temperament.
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Frequency, amplitude, envelope and spectrum affect pitch, loudness and timbre. All are discussed and quantified here.
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Moving either source or receiver produces a frequency shift called the Doppler effect, which we measure and analyse.
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Sound is a longitudinal wave of variations in pressure and density. We derive and measure its speed.
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