Week 2a - Physics 1240 Today: Waveforms and digital...

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Physics 1240 January 18, 2011 Today: Waveforms and digital sampling Next time : Sources of musical sound Last time Only a vibration that repeats itself at regular intervals produces the sensation of a distinct pitch Periodic motion -- repeats itself at regular intervals frequency = 1 / period Frequency (physical) determines pitch (sensation) Amplitude - how large the oscillation is
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Outline Audible range Basics of digital sound editing Sampling rate Bit depth or dynamic range Estimates of size of digital sound files
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frequency f is the number of oscillations per second f= 1/period Waveform Summary
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CQ 2.1 Should we count the clicker scores today? A) Yes B) No C) Abstain (Abstain: to refrain deliberately and often with an effort of self-denial from an action or practice)
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CQ 2.2 If we double the period of a musical vibration what would happen to the pitch? A) It would go up by a factor of 4 B) It would go up by a factor of 2 C) the pitch would not change D) the pitch would go down CQ 2.3 What happens to the musical pitch in the above question?
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This note was uploaded on 05/01/2011 for the course PHYS 1240 taught by Professor Holland,murray during the Spring '08 term at Colorado.

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Week 2a - Physics 1240 Today: Waveforms and digital...

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