Audio 1

Question 1

Acoustics

Answer 1

The science of sound. Effect an environment Hanson sound

Question 2

Refers to the actual pressure changes in the air that compromise audible sound waves, as opposed to voltage changes that compromise an electrical path

Answer 2

Acoustical

Question 3

The sound deadening (absorptive) characteristics of any substance

Answer 3

Acoustical absorption

Question 4

For tape recorders, refers to the correct adjustment of the tape head position with respect to the magnetic tape path, also adjustment of the recorder’s electronics for the best frequency response

Answer 4

Alignment

Question 5

A special monaural tape recording for use in alignment and calibration of tape recordings, and containing test tones at specified frequencies. 30, 50, 100, 250, 500,800Hz and 1,2.5,5,7.5,10,12 and 15kHz

Answer 5

Alignment Tape

Question 6

A device which increases the level of a signal by increasing the voltage of current. Can also decrease levels

Answer 6

Amplifier

Question 7

Term for level or volume of an electrical or acoustical signal. A measurement of height of a wave form.

Answer 7

Amplitude

Question 8

An electrical signal who’s frequency and level vary continuously in direct relationship to the original acoustical sound waves. Control or circuit which continuously changes the level of a signal ina direct relationship to the control setting

Answer 8

Analog

Question 9

A room or chamber which is specifically designed to absorb all sound within, this preventing sound reflections or reverberation. Typically used in the evaluation of microphones and speakers

Answer 9

Anechoic chamber

Question 10

The beginning of a sound or the initial transient of a note.

Answer 10

Attack

Question 11

To reduce the level of an electrical signal, usually with a volume or loudness control. Also to reduce sound levels acoustically through the use of absorption materials.

Answer 11

Attenuate

Question 12

A device which reduces the voltage or power level of a signal

Answer 12

Attenuators

Question 13

A moveable, absorptive panel used in studios to provide sound isolation between instruments

Answer 13

Baffle Acoustic

Question 14

The surface or board on which one or more loudspeakers are mounted

Answer 14

Baffle Speaker

Question 15

A three wire audio circuit; two wires carry the signal high and low the third wire is a shield which is connected to chassis or system ground. The signal leads are both of equal potential to the ground,

Answer 15

Balanced

Question 16

Refers to the space in the frequency response of a device through which audio signals can pass (between lower and upper frequency limits, those points where the signal level has rolled off 3 dB)

Answer 16

Bandwidth

Question 17

In a tape recording, an inaudible high frequency signal (usually 100Hz or higher. Applied to the tape during the recording to optimize it’s frequency response and to reduce distortion)

Answer 17

Bias

Question 18

A microphone sensitivity pattern having the same property in both directions. Aka figure8

Answer 18

Bi directional

Question 19

A stereo recording made with two microphones that are positioned to emulate the sensitivity and spacing of two ears on an average human head

Answer 19

Binaural recording