6 results found for sound

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00:11:00

Human Sound

by Joe Wolfe
Human Sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 12 years ago | 2145 views
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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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00:09:00

Standing waves

by Joe Wolfe
Standing waves
for 14-19 and upwards,
Lectures | 14-19 and upwards | 12 years ago | 2309 views
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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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00:08:00

Interference and consonance

by Joe Wolfe
Interference and consonance
for 14-19 and upwards,
Lectures | 14-19 and upwards | 12 years ago | 1746 views
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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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00:09:00

Quantifying sound

by Joe Wolfe
Quantifying sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1834 views
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Frequency, amplitude, envelope and spectrum affect pitch, loudness and timbre. All are discussed and quantified here.

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00:10:00

The Doppler effect

by Joe Wolfe
The Doppler effect
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 2192 views
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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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00:09:00

Sound

by Joe Wolfe
Sound
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1736 views
Rating:

Sound is a longitudinal wave of variations in pressure and density. We derive and measure its speed.

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