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Audio Terms Part 3

Jay Henry

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38

Across
4.Refers to an amplifier or active circuit in which the output level is the same as the input level.
8.Any device which converts energy from one form to another.
10.Any point in the signal flow of a mixing console where the audio can be brought out of and re-introduced into the console; channel inputs and main outputs are not usually considered _____ _____. Usually refers to pairs of output / input jack that appear in the console's _____ bay (i.e., post fader and pre EQ inserts for a given channel).
12.The perceived frequency of a sound. Relative _____ is subjective and depends on the sound level as well as the actual _____.
14.A feature of many mixing consoles that allows one input signal, one bus, or a combination of "_____" signals to be monitored exclusive of all other signals - without disturbing the main output mix. For example, in the middle of a show with an 18 in X 2 out console, an engineer might listen to one microphone (perhaps to check for a problem, to see what it is picking up, or adjust the input position's EQ). She merely engages that input position's _____button - the sound reinforcement and / or tape recorder feeds are not affected.
18.The last section of any amplifier system, whether line amplifier or power amplifier.
19.A type of compressor with approximately a 10 :1 or greater compression ratio.
21.A term that describes the amount of the recording tape which is actually in contact with the surface of the tape head. Usually measured in angle of _____.
23.Occurs when the capabilities of an amplifier are exceeded. The result is very audible distortion, also visible on an oscilloscope.
25.A stereo recording made with two microphones that are positioned to emulate the sensitivity and spacing of two ears on an average human head.
29.The pattern of sound distribution from a speaker.
30.A condition where further increase in signal level cannot be accommodated. The level where high distortion occurs.
31.Are multiples of a fundamental frequency. The "first" ______ is the fundamental. The second _____ is twice the fundamental frequency. The third _____ is three times the fundamental, and so forth.
33.An amplifier that decreases its gain as the level of the input signal increases to reduce the dynamic range of the program. A _____ may operate over the range of input levels, or it may operate only on signals above or below a given level. (the threshold level).
35.Sound level as detected by an average human ear. Due to the ear's sensitivity characteristics, perceived _____ for a given sound pressure level will change at different frequencies above or below 1000 Hz
36.An audio signal processor that is used to remove excess sibilance from certain vocal tracks. Generally it is a specialized form of compressor with an equalizer in its level detection circuit that causes it to be more sensitive to high frequencies, thus restricting high-level high frequency sounds.
37.A procedure whereby any mono signal can be placed in a stereo or surround perspective.
38.A description of the width or sharpness of an equalizer or filter characteristic. The higher the "_____" the steeper the response curve. Also a measure of the directivity of a loudspeaker. A truly omni-directional speaker has a "_____" of 1. Higher "_____" speakers are more directional.
Down
1.The sound deadening characteristics of any substance.
2.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 ground, and are hence "_____" with respect to ground. (Not the same as floating).
3.An area, above or below the channel faders on a mixing console, reserved so the engineer can identify the signal being fed to the various faders.
5.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.
6.Not directly in front of a microphone or speaker. If a 360 degree circle is drawn around a unit, the on axis position is 0 degrees (dead front center), and all other positions are considered to be _____ _____.
7.The amount an amplifier increases the power of a signal. Usually specified in dB.
9.A small soundproof room which serves a similar purpose to the acoustic baffle -- isolating a performer and microphone(s) from others in the studio.
11.Another term for level or volume of an electrical or acoustical signal. A measurement of height of a waveform.
13.An electronic device that will make loud parts of the program louder and/or quiet parts quieter to increase (expand) the dynamic range. Commonly used to reduce analog tape noise (on playback) or to reduce leakage from other instruments (during recording or playback).
15.A recording or segment of a recording that originally was considered usable, but later was not used or was discarded in favor of another recording of the same program. Records are often made by recording a given musical selection two or more times and then selecting the best performances. The unused recordings (takes) are considered to be _____ _____.
16.A sub-multiple of the fundamental frequency. For instance, a _____ is a wave whose frequency is one half that of the fundamental.
17.Refers to the signal point preceding the fader in a mixer or console. A circuit that is fed _____ _____ will not be subject to any adjustments of that fader.
20.A mixing console input that receives the signal from the output of a reverberation chamber or device.
22.The process whereby signals from a multitrack tape recorder are routed to a mixing console and recombined to make a mono, stereo, 5.1 or 7.1 master tape. The 4, 8, 16, 24, 32, or 48 tracks of the multitrack are positioned anywhere from full left, through center, to full right of the stereo perspective (5.1 and 7.1 formats add center front dialog and rear surround channels to the mix) and the individual track levels and equalization are adjusted to achieve the desired balance. Echo reverberation and other special effects may be added during the _____.
24.A unit of volume (audio level). A change of one _____ is the same as a change of one decibel for a sine wave. _____ is more specifically used to describe the level of complex waveforms, such as speech and music.
26.The level at which noise exists in an electronic device, audio system or tape recorder, commonly measured in the absence of signal.
27.Is also an electrical measurement of voltage but 0 _____ is equal to 0.775 volts.
28.A signal path to which a number of inputs may be connected for feed to one or more outputs. In a mixing console a _____ is usually a long wire to which any input channel may be connected by means of a switch or control. The end of the wire goes into a summing amp, which then feeds one of the console outputs.
32.The tendency of an electrical or mechanical system to vibrate, or oscillate at a certain frequency.
34.The process of combining two or more signals, or splitting one signal into two or more signals without electronic or resistive summing or splitting.

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