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Audio Terms Part 4

Jay Henry

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1.An unwanted change that occurs to an audio signal, causing frequency to appear at the output that were not present at the input of the audio device.
3.Generally the unwanted acoustic pickup of sounds from other performers in a given microphone or channel. _____ can also be of an electrical nature (Crosstalk).
5.Refers to excessive bass response, or a peak in the bass response of a recording, playback or sound reinforcement system.
6.A device or system in which two or more signal sources (mic or line level) can be combined and feed to another device or part of the audio system. Large format _____ _____ are designed for mixing many inputs or feeding many outputs simultaneously.
9.An electrical signal whose frequency and level vary continuously in direct relationship to the original acoustical sound waves. May also refer to a control or circuit that continuously changes the level of a signal in a direct relationship to the control setting.
11.One _____ _____ is the smallest audible difference in sound level. It is also the threshold of human hearing at 1kHz.
13.A potentiometer that controls the signal level of a console input position or output channel. May be linear or rotary.
14.An electronic device, which passes AC currents, but blocks DC. Also used to store voltages. A _____ is made of two metallic surfaces separated by an insulator.
16.An acoustic measurement of the sound energy, usually measured in dB SPL. Not the same as loudness, which involves subjective measurement based on the human ear's differing sensitivity at different frequencies and levels.
18.The total opposition to the flow of alternating current in an electrical circuit.
19.Also known as the precedence effect. Helmut _____ first described this psycho acoustic phenomenon. The _____ ______ describes our ability to perceive the location of a sound source based on the relative level and arrival time of the sound in each ear.
20.A technique for recording or sound reinforcement whereby the microphones are placed close to vocalists and to instruments. _____ _____ provides a great deal of presence and detail for the nearby sound source(s), while avoiding leakage from more distant sound sources. Most of today's popular music recordings use this type of microphone technique.
27.In an audio device or system, a frequency at which there is a response peak.
28.Refers to the signal point after the equalizer in a mixer or console. A circuit that is fed _____ _____ will be subject to any adjustments of that equalizer.
30.A unit of measure for electrical or acoustical power.
31.For tape recorders, refers to the correct adjustment of the tape head position with respect to the magnetic tape path, and also adjustment of the recorder's electronics for the best frequency response.
33.A phenomenon whereby one or more sounds can "trick" the ear into not hearing other weaker sounds that are present simultaneously, even if they are at different frequencies.
34.A device that delays an entire audio program signal by a certain amount of time. Usually from 0 to 1250 milliseconds.
35.The control that places the signal in the stereo or surround perspective.
36.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).
37.Unrecorded or "blank" magnetic recording tape.
2.The average signal level at which a circuit, an input or an output of a piece of electronic equipment is meant to operate.
4.A device which reduces the voltage or power level of a signal.
7.Describes any of several varieties of audio connectors having 3 or more conductors plus an outer shell that shields the connection and locks the mating connectors. The 3 pin _____ connectors are commonly used to make balanced mic and line level connections in professional audio systems. The _____ connector is also sometimes called a "cannon" connector, so named for the original manufacturer although a number of companies now manufacturer compatible connectors.
8.A switch that stops signal flow : Commonly found on input and output positions of mixing consoles. Similar to a channel on / off or kill switch . The _____ _____ accomplishes the same function as bringing the fader down to infinity (off), but avoids disturbing the mix setting.
10.An abrupt increase in signal level. In music the result of a percussive or plucked instrument such as a drumhead being struck or a guitar string being picked. It is desirable to preserve these musical _____. However, there are unwanted electrical _____ such as the "click" caused by a switch , or the "pop" caused by a scratched record.
11.A unit of measurement for ratios of sound level, power, voltage, and other quantities. The _____ is only meaningful when referenced to some actual value
12.Refers to the routing of signal (the path of the signal) as it goes from the input to the output of an audio device or system. Synonymous with "signal path".
15.Refers to that area of the audio frequency spectrum which affect the perceived presence of the sound, Assuming there is no echo or reverb, presence or the feeling of being "up front" will be determined by the relative balance of those frequencies falling roughly between the 2kHz and 5kHz range.
17.Equal sensitivity in all directions. Usually refers to non-directional microphones.
21.An input designed to operate at line level (see below) as opposed to microphone or speaker levels.
22.In multi-track tape recorders, a technique where channels on the record head can be used for tape playback while other channels are being recorded. This permits performers to listen to previously recorded tracks and to record additional tracks in perfect synchronization.
23.A unit of magnetic induction. One _____ represents one line of flux (1 Maxwell) per square centimeter.
24.Refers to electronic equipment or signal processors that are not incorporated in the recording / mixing console.
25.A mixing console output that sends a signal to the input of an effects device.
26.The maximum instantaneous power or voltage level of a signal.
29.In a compressor or limiter, the "excess" signal level that occurs during the time it takes for the circuitry to react, i.e., before the gain decreases.
32.A special type of audio amplifier that can be used to decrease level, unlike conventional amplifiers, which would become unstable if operated with loss. Also, instead of using signal attenuation, the amount of amplification is controlled by an external dc voltage. _____ are commonly used in recording consoles for level automation and sub-grouping functions. also used in electronic music synthesizers.

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