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Sound Measurement
Intro to Audiology
Question | Answer |
---|---|
Amplitude | The maximum displacement of the particles of a medium; the distance between the baseline and the maximum displacement. |
Aperiodic Wave | A wave with an absense of periodicity, where it is impossible to predict what the wave will look like from one time to the next. Its vibratory motion is random. |
Complex Wave | Any sound that is not sinusoidal; it itself is composed of a series of simple sine waves that can differ in amplitude, frequency, and phase. |
Energy | The measure of the capacity to do work OR something that can produce a change in matter. |
Fourier Analysis | Takes a complex wave form and decomposes/analyzes it to determine the amplitudes, frequencies, and phases of its sine wave componants. |
Frequency | The number of cycles completed per second. |
Logarithmic Scale | One unit on the scale is so many times greater (or less) than another; successive units are always different by some constant ratio, and the constant ratio always equals the base. |
Period | The time (seconds) it takes for a vibration to complete one cycle of vibration. |
Wavelength | The distance traveled by a sound wave during one period of vibration. |
Waveform | A graph in which changes in pressure or amplitude (displacement), are shown as a function of time. |