Test 1 Flashcards
What is sound?
Meaning of sound
Sound is a vibration through a medium (water air wood) That is intercepted by the human ear, which transmits an electrical signal to the brain, which interprets the data as auditory info
Waves consist of areas of high and low pressure called…
Compressions and rarefractions
Sound waves are a Type of wave known as…
Longitudinal waves
Amplitude is…
Height of wave
Amplitude determines….
How loud a sound will be
Amplitude is measured in….
Decibels (dB)
Cycles?
At what point does the wave repeat and over how much time
CPS
Cycles per second
Frequency (f) is…
Cycles/second
Frequency is measured in….
Hertz (Hz)
Wavelength is represented by….
Lambda (λ)
Formula for wavelength is….
λ = C/f
“C” is the speed of sound constant
High frequency…
Short wavelength
Low frequency…
Long wavelength
15 degrees Celsius, sound travels at…
340 metres per second
Sound travels fast in
High temps
Sound travels slow in
Low temps
Inverse square law
The further you are from a speaker, the quieter it becomes
Phase is…
Temporal relationship between 2 waveforms, a relationship of time
Phase is measured in…
Degrees
Addition of waveforms is called…
Constructive interference
The DNA looking wave form is called….
180Ø
Reverse polarity
Phase cancellation
The DNA looking one is an example of….
Deconstructive interference
Sound cannot travel through…
A vacuum
