Review 2nd Quiz Flashcards
Dopler effect
Pitch of something changes as it nears you or gets farther away
What is frequency response?
Range of frequencies audio equipment can produce
What is headroom?
Cushion in volume before distortion
What’s a transient?
Sudden change in sound, especially loud volume
What’s dynamic range?
Range of soft vs loud volume
What’s a transducer?
Converts energy to a different form, electrical voltage
What’s the 60-60 rule?
Limit listening through headphones to no more than one hour per day at levels below 60 percent of maximum volume
Distortion
Appearance of a signal in the reproduced sound that was not the original sound
Intermodulation distortion
When two or more frequencies occur at the same time and interact to create combination tones and dissonances unrelated to the original sounds
Harmonic distortion
Occurs when the audio system introduces harmonics into a recording that were not present originally (usually happens when input and output of a sound system are nonlinear)
Transient distortion
Inability of audio component to respond quickly to a rapidly changing signal (sometimes produces ringing sound)
Loudness distortion
When a signal is recorded or played back at a loudness greater than the sound system can handle
Anechoic chamber
Room with no reflections of any kind
Linearity
Frequencies fed to a loudspeaker at a particular loudness are reproduced at the same loudness
Sensitivity
The on-axis sound-pressure level a loudspeaker produces at a given distance when driven at a certain power
Polar response
Indicates how a loudspeaker focuses sound at the monitoring position
Coverage angle
Off-axis angle or point at which loudspeaker level is down 6 dB compared with the on-axis output level
Polarity
Arrival time and volume elements of sound having to do with phasing