SPHHRNG 2230 Lecture Notes - Lecture 1: Sound
4 Sep 2016
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Document Summary
Media required- usually air for humans, but also any other material. Movement of molecules (waves of compression and contractions) Frequency and pitch: wavelength- distance to complete one cycle, frequency= rate of vibration of sound source measured in hertz (hz) Short wave length= high frequency: pitch= what you perceive. Intensity and loudness: intensity- amplitude of the sound wave. Frequently referred to as volume: loudness- how we perceive it. Speech signals: spectrograms: display speech by amplitude across time, waveforms: display speech by frequency across time.
