Sound
What is the relationship between amplitude and sound perception?
Higher amplitude= louder sound
Lower amplitude= softer sound
What is a sin wave?
One simple, singular wave.
What is the difference in perception of large versus small waves?
Larger waves= louder sound
Smaller waves= softer sound
What is the formula for frequency?
f=1/T
What are the three types of graphs mentioned in class?
What force causes a molecule to oppose displacement?
Elasticity
What are two other terms for pressure wave?
Sin wave, sound wave
What type of acoustic events have a repetitive waveform pattern?
What do the pieces of the formula stand for?
f= frequency
T= period
What are the axes labeled on a waveform?
Y-axis: sound pressure
What force causes a molecule to be accelerated?
Mass/Inertia
What are pressure waves?
A repeating pattern of high and low pressure that moves through some medium.
What real life complex acoustic event is aperiodic in nature?
fricatives
What is the difference between frequency and period?
Frequency: How often a cycle is completed in one second.
Period: Time it takes to complete one full cycle.
What are the axes labeled on a spectrum?
X-axis: frequency
Y-axis: amplitude
What is the displacement of an air molecule from rest position?
Amplitude
A longer wavelength results in ___ frequency.
Lower
What is the difference in perception of waves with a long period compared to short period?
Long period= deeper pitch
Shorter period= higher pitch
T/F: The relationship between period(T) and frequency (f) are linear.
False
What does a waveform display?
Acoustic event in the time domain.
Sound is defined as
Propagation of a pressure wave over space and time.
What is the fundamental frequency?
The lowest frequency component on a spectrum.
If two complex period events both take 6 ms to complete a cycle, would they have the same frequency?
Both would have the same first frequency (fundamental frequency) but not the rest.
What is the period of a wave with a frequency of 125 Hz?
8 ms/0.008s
What does a spectrum display?
Acoustic event in the frequency domain.