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Beats and Music Contents: Beats Overtones and music.

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Presentation on theme: "Beats and Music Contents: Beats Overtones and music."— Presentation transcript:

1 Beats and Music Contents: Beats Overtones and music

2 Beats TOC Two different pitches played together interfere: f beat = |f 1 - f 2 | Demo - pennywhistle, big pipes on burners

3 Beats 11 | 22 TOC

4 f beat = |f 1 - f 2 | f beat = | | = 384 Hz This is a g in the octave below the e 384 Hz W What beats do you hear if you play an e 640 Hz with a c 1024 Hz?

5 f = 1/T = 1/.20 s = 5.0 Hz f beat = |f 1 - f 2 | 5.0 Hz = | f | f 1 = or Hz Hz or Hz W The concertmaster is playing an A Hz. Another violin hears a beat every.20 seconds. What frequency are they playing?

6 Music 101 TOC Most instruments use standing waves String and wind instruments follow overtone series: C 1 1f 1 C 2 2f 1 G 2 3f 1 C 3 4f 1 E 3 5f 1 G 3 6f 1 B flat 7f 1 C 4 8f 1 Octave = 2 x frequency Play Taps Harmony - Beats are consonant Sing E 3 +C 4 = 5 and 8, hear 3 Dale Warland and the undertones Demo with beats and laser


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