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Audio Terms Part 1

Jay Henry

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2.In a mixing console, the bus or channel which is used to feed a program to a stereo tape recorder, 2-channel sound system or other stereo equipment. (A _____ _____ actually consists of two of these, the left and the right .)
6.Refers to the signal point after the fader in a mixer or console. A circuit that is fed _____ _____ will be subject to any adjustments of that fader.
7.Any point in an electrical or electronic device used as the zero voltage reference.
11.This controls the overall level of one or more outputs simultaneously.
12.The Science of sound. Also can refer to the effect a given environment has on sound.
13.A low frequency boost which occurs when cardioid microphones a held very close to a sound source.
15.Refers to the difference between the nominal operating level and the minimum level at any point in an audio system or device. Usually expressed in dB.
19.This term describes a technique or a device that makes the output impedance of one circuit approximately equal to the input impedance of the next.
20.A mixing console input that receives the signal from the output of an effects device.
23.The ability of a microphone, amplifier, or speaker (etc.) to follow sudden changes in audio levels.
24.The demagnetizing force or field intensity required to reduce the signal on magnetic tape from maximum to zero. Also known as intrinsic _____.
25.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.
26.A rotating shaft connected to the motor in a tape recorder that moves the tape at a constant speed across the heads. The tape is pressed against the _____ by a pinch roller.
29.One or more discretely discernible delayed sound images.
30.Tracks on a multi-track tape which have not yet been recorded (or which are eraseable), and are hence available for overdubs.
31.Is an electrical measurement of power. 0 _____ is equal to 1 watt (+10 _____ = 10 watts, +20 _____ = 20 watts).
33.Electronic components that introduce losses in the audio circuit in which they are inserted because they do not have amplification circuitry. _____ _____ do not require a power supply.
34.A term loosely used to describe the amplitude of a signal or a sound. More precisely, it is the value of that signal or sound relative to a given reference expressed in dBm, dB SPL, etc.
36.Any unwanted signal, such as hum, hiss, rumble, crosstalk, etc.
37.The property of not being linear. ( An output that does not vary in direct proportion to the input is said to be _____).
38.A high accuracy speaker system used in recording or broadcast control rooms and studios.`
1.Any insulating material, although the term usually refers to the material between the plates of a capacitor.
3.A phenomenon that can be sometimes heard when a compressor is used to control a complex program signal, or even a single voice in the presence of ambient noise. The "_____" is a modulation of background sounds, causing them to become louder as the compressors gain increases in the absence of strong signal and then to become softer when a strong signal is present.
4.The difference between the nominal or maximum operating level and the noise floor, specified in dB. Values may be weighted or un-weighted. Sometimes equivalent to dynamic range.
5.A feature found on most recording / mixing consoles that enables the mixing engineer to preview (listen to) the signal coming into the input on monitor speakers or headphones while the channel fader is down and no signal is feeding the recorder or the stereo buses.
8.Defines how rapidly an audio waveform goes from zero to maximum level. Faster _____ _____ are associated with higher frequencies. The _____ _____generally refers to the signal itself, not to the circuitry through which it flows.
9.A special effects device used to create an effect originally created by carefully manipulating two tape recorders, which recorded and played the same signal. One machine was slowed down manually by holding pressure on its tape supply reel, then the other machine was slowed down alternately to create a comb filter. (harmonically related notches in the frequency response). It is somewhat like phasing, but tends to impart a musical quality even to non-musical sounds.
10.A mechanical adjustment of a magnetic tape head to obtain uniform contact with the top and bottom of the tape. Refers to the forward-backward tilting of the head.
14.Bending of sound waves caused when the waves travel from a medium of one density to a medium of another density, such as warm air to cold air.
16.Is an electrical measurement of power. 0 _____ is equal to 1 milliwatt, which is the same as 0.775 volts across a 600 ohm impedance. (+30 _____ = 1 watt; +50 _____ = 100 watts).
17.An acceptable recording of a musical selection or production.
18.A moveable, absorptive wall / panel used in studios to provide sound isolation between different instruments.
21.A room or chamber which is specially designed to absorb all sound within, thus preventing sound reflections or reverberation. Typically used in the evaluation of microphones and speakers.
22.The routing of a signal from a given input position (channel) to a particular output bus or busses.
27.A wire wrapped around a tube (coil form) attached to the speaker cone or driver diaphragm. The coil becomes an electromagnet when an audio signal is applied; this interacts with a permanent magnet and causes the cone or diaphragm to vibrate.
28.Refers to the nominal (average) operating level of an audio system, and generally corresponds to a "0 VU" meter reading. There are several widely used standard _____ _____ : +8 dBm (1.95 V. RMS) for broadcast +4 dBm (1.23 V RMS) for most pro audio and live sound -10 dBm (310 mV RMS for consumer audio and semi-pro recording
32.A regular variation in electrical signal level or sound pressure level.
33.Refers to the uniformity with which tape is spooled onto a reel. A good tape _____ will be smooth with no ripples; poor tape _____ can lead to damaged tape edges.
35.In a tape recording, an inaudible high frequency signal (usually 100kHz or higher.) applied to the tape during the recording to optimize its frequency response and to reduce distortion.

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