Transcription of Mark Petersen - Applied Mathematics
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Mark Petersen - Applied Mathematics
1 Mathematical HarmoniesMark PetersenWhat is music? When you hear a flutist, a signal is sent from her fingers to your ears. Asthe flute is played, it vibrates. The vibrations travel through the air and vibrate youreardrums. These vibrations are fast oscillations in air pressure, which your ear detects BasicsThe simplest model of a musical sound is a sine wave, were the domain (x-axis) is timeand the range (y-axis) is pressure.)2sin(ftAP where: P pressure, in decibels or Pascalst time, in secondsAamplitude (height of the wave) or volume, in decibels or Pascalsf frequency or pitch, in period, in seconds is the duration of one wave.
Mark Petersen What is music? When you hear a flutist, a signal is sent from her fingers to your ears. As the flute is played, it vibrates. The vibrations travel through the air and vibrate your eardrums. These vibrations are fast oscillations in air pressure, which your ear …
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