N.A.B. - An abbreviation for the National Association of Broadcasters
Nano - A prefix meaning one-billionth.
Nano-Webers Per Meter - The standard unit in measuring the amount of magnetic energy.
Narration - The spoken word from a person not seen on the screen that gives various information.
Narrow Band Noise - Noise (random energy) over a limited frequency range.
National Association of Broadcasters - An association that has adopted standards, including the standardization of the record equalization used in tape recording.
Near Field - The area up to one foot from the sound source.
Negative - The opposite of positive.
Negative Feedback - A portion of the output signal that is feed to the input (of an amplifier), out of phase.
Noise - 1) A random energy that contains energy at all audio frequencies. 2) Any unintentional or objectionable signal added to an audio signal.
Noise Filter - A filter used which passes only signals with the intended audio frequencies thus eliminating noise signals at other frequencies.
Noise Floor - The level of the noise, in dB, below the signal.
Noise Gate - A gate used to turn off an audio channel when noise but not signal is present.
Noise Reduction - Any device to remove noise in a device or system.
Non-Directional - Used with microphones to mean the same thing as the term Omni-Directional (picking up from all directions).
Non-Destructive Editing - The action in Digital Disk Audio Recording, where the playback of the digital audio is programmed to play certain portions and not others.
Non-Linear - The condition of obtaining a change at the output of the device which is not proportional to the change occurring at the input, causing distortion.
Normals - Switches on the patch jacks that connect certain jacks together until a patch cord is inserted.
Normalize - 1) To provide normal switches on a jack. 2) To reset a synthesizer, sound module or sample playback unit to the original settings that were present from the factory. 3) To adjust the level of a selection so that the highest peak is at the maximum recording level of the medium. 4) In computers, to format a floppy disc.
Normalizing Jacks - Switches on the patch jacks that connect certain jacks together until a patch cord is inserted.
Notch - A narrow band of audio frequencies.
Notch Filter - A device that rejects signals that have frequencies within a narrow band of audio frequencies and passes all other signals.
Null - 1) A condition of zero energy or movement. 2) In console automation, the placement of the slide of a fader to the exact point that was originally used to make the automated mix.
NW/m - An abbreviation of Nano-Webers Per Meter (the standard unit in measuring the amount of magnetic energy).
Nybble - One half byte, 4 information bits.
Nyquest Frequency - The highest frequency that can be recorded and reproduced properly by a particular sampling rate (a frequency that is one-half the sampling rate).
Nyquest Rate - The lowest sampling rate that can be used to record and reproduce a given audio frequency.
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