tags: mus-407 sound sound-properties frequency

Frequency

The frequency of a periodic [waveform] is the number of cycles that occur per second, measured in Hertz (Hz)

• periodic waveform: cyclic behavior, repeatedly exhibits the same pattern
• non-period/aperiodic waveform: irregular, non-repeating pattern
  • also called [noise], unwanted sound

period: duration, in seconds, of one full cycle of a periodic waveform

inverse relationship between frequency and period: f = 1 / p

Relationship

Below is the mathematical relationship between speed of [sound], frequency, and wavelength

$$v = f \lambda$$

v: speed of sound (meters/second)

f: frequency (cycles/second)

$\lambda$: wavelength (meters/cycles)