Sound is produced from the vibration of air particles that hit our eardrum. There are many ways that we can vibrate the air particles to produce sound. For instance, plucking a string, hitting a drum, shouting and basically almost everything we do involves vibrating air particles. Interesting thing to think about; sound is only created when these particles hit our eardrums, therefore, sound is only present when there is a listener to perceive it.
The diagram above shows a sound wave. The wavelength is how long it takes for the wave to make one oscillation. The shorter the wavelength, the higher the pitch. The frequency is measured in hertz(Hz)The amplitude is how high the wave is. The higher the wave, the louder the sound.
We can see the effects the sound wave has on the sound produced from the diagram above.
The Harmonic Series
The overtone series (or the harmonic series) is the sequence of sound where each frequency is a multiple of the fundamental, the lowest frequency. Basically, the note that is played is the fundamental while the multiple of frequencies that are produced after that are the overtones. As we go up the series, the intervals start becoming smaller but they are also harder to hear.
No comments:
Post a Comment