lesson 1 Flashcards
devices that change one or more aspects of an audio signal are called
signall processors
frequency response problems associated with cables are generally due to _________ between the ________ and shield in the cable.
capacitance
signal conductors
what are the main factors that affect a sound systems response outdoors
wind
temp
air absorption
what audio elements exhibit the flattest frequency response characteristics
electronic circuits and cables
what we hear as sound is a class of physical kinetic energy called___________
acoustical energy
sub-woofers are loudspeakers designed to operate below ___________
300HZ
what happens if two sound waves are 180 degrees out of phase
they cancel
define octave
the musical interval between two tones
define period of a wave
amount of time required for one complete cycle.
what does frequency response of a device describe
relationship between devices input and output
what does frequency response of a device describe
relationship between devices input and output
the frequency response of any sound system is affected by ________ in which it works
environment
what does pink noise sound like
rushing waterfall
wavelength is equal to
speed of sound/frequency
what is the main reason why phase must be controlled in a sound system
affects how sounds add together
what are the two basic classes of sound reinforcement loudspeakers
full range
limited range
what are the main factors that will affect the frequency response indoors
reflections from wall,ceiling,floor… surfaces
what is the speed which sound waves travel through air
1130 ft/second
what is amplitude of an audio signal
signal level
what is the purpose of shielding conductor of a cable where is it connected
catch most induced static
the time relationship of a sound wave to a known time reference is called the
phase of the signal