Audio Systems - Chp 4 Flashcards
(15 cards)
How sound moves through the air is called ____.
Propagation
Wavelength is the ____.
Physical distance between two points of a waveform that are exactly one cycle apart
Which of the following does 0dB SPL describe?
The threshold of human hearing
A “just noticeable” change in sound pressure level, either louder or softer, requires a ____ change.
+/-3dB
Acoustics covers how sound is ____, and its ____ and ____.
Produced; propagation; control
Numerous, persistent reflections of sound are called ____.
Reverberation
Ambient noise is sound that ____ the desired message or signal.
Interferes with
The audio signal ends up in a(n) ____ before being converted into acoustical energy.
Output device
The strength of the electrical audio signal from a microphone is called a(n) ____ signal.
Mic-level
Phantom power is the ____ required to power a condenser microphone.
Remote power
Typically, what type of connector finishes the shielded twisted-pair cable?
XLR
The simultaneous use of multiple wireless microphone systems requires ____.
Frequency coordination
If a technician changes the level of a signal, it is called ____.
Gain adjustment
The amplifier comes right before ____ in the audio system chain.
The loudspeakers
What is a crossover?
An electrical frequency dividing network circuit
