Sound Notes
Waves
A disturbance of wiggle/vibration in some period of time.
Waves cannot exist in a single space, but must move from one place to the other. In other words, parts of a wave move in space from one place to another.
The pendulum is an example
Types
Transverse Wave
A wave where the vibrations is at a right angle to the motion of the wave.
Longitudinal Wave
Wavelength
The distance between two wave crests or two wave troughs
Amplitude
The distance from the crest to the baseline
Cycle
One trough and one peak
A wave where the vibrations is in the same direction as the motion of the wave.
Light waves, Ocean waves,
Sound waves
The type of wave can change based on what medium it passes through
In longitude waves, the amplitude is the maximum distance the sound wave particles need to travel from the undisturbed distance.
Frequency
The number of wave crests that pass a point , how fast a wave Travles (Hertz)
Hertz
The numbed of wave cycles per second
1 Hz = 1 wave per second
Detected by humans as pitch
Instrument parts
Guitar
Bridge
Holds the stings and connects the energy into the sound board.
Frets
Raised metal rods that are used to change the length of the strings.
Natural Frequency
Everything has its natural frequency
The frequencies that an object has that is determined by the material, density, and mass.
Vibration is an acceleration