WAVEFORMS
HARMONIC CONTENT
DECIBELS
HUMAN HEARING
ACOUSTICS
100
Sound is produced when something _______.
What is Vibrates
100
Musical instruments rarely produce pure ____ _____.
What are Sine Waves
100
A decibel is a __________ value expressing the differences in intensities between two levels.
What is Logarithmic
100
The human ear is a non-linear device, therefore it produces ________ _________.
What is Harmonic Distortion
100
The word Audio comes from this Latin word.
What is Audire
200
The positive point of pressure in a waveform is referred to as the __________.
What is Compression
200
The human ear perceives whole multiples of the fundamental as a phenomenon known as an ______.
What is an Octave
200
The threshold of pain is approximately ___ dB.
What is 130
200
This is considered to be the outer portion of the ear and reflects sound in the ear.
What is Pinna
200
_______ occurs when loud signals prevent the ear from hearing softer sounds, most commonly when the frequencies of the sounds are close together.
What is Masking
300
Frequency is measured in _____.
What is Hertz (Hz)
300
This aspect of a sound wave determines the tonal quality of a sound source.
What is Timbre
300
The branch of psychology concerned with the perception of sound and it's physiological effects is known as _______________.
What is Psychoacoustics
300
Which two scientists conducted studies in the human ears response to different frequencies and their corresponding perceived loudness?
Who is Fletcher and Munson
300
This is a psychoacoustic effect, in which a listener hears two identical sounds with two different arrival times.
What is the Haas Effect
400
This is defined as the distance above or below the equilibrium or zero crossing of a waveform.
What is Amplitude
400
The four aspects of a sound waves Envelope are Attack, Decay, Sustain, and _______.
What is Release
400
SPL stands for _____ ________ _____.
What is Sound Pressure Level
400
The snail shaped structure in the inner portion of the ear is known as the _______.
What is Cochlea
400
________ ____________ gives us a sense of direction of sound.
What is Binaural Localization
500
The outward pressure motion of a waveform is known as ____ ___________.
What is Wave Propagation
500
These multiples or harmonics are considered to be harsh and displeasing to the ear.
What is Odd
500
The threshold of human hearing is referred to as a _ __ ___ reference.
What is 0 dB SPL
500
The human ear is typically most sensitive around this frequency range.
What is 3 kHz
500
This phenomenon refers to two different tones that differ slightly in frequency and have approximately the same amplitude.
What are Beats
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