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FADER
A type of variable resistance control, which alters the strength of a signal.
FARAD - [F]
A unit of measure of capacitance. A farad is a large unit and only really used in electrical engineering. In electronic devices, we are more likely to encounters capacitors whose capacitance ranges from milli to pico farads.
FARADAY EFFECT
The effect of rotation of the plane of polarization of light by magnetic field.
FAST FOURIER TRANSFORM
A computer algorithm, which derives the fourier spectrum from a sound file.
FEEDBACK
1. Interaction between the output and input of a device. There is positive and negative feedback. 2. In electro acoustics it signifies the (usually) unwanted effect of a device's input picking up or being fed its own output.
FERRI-CHROME TAPE
Format of magnetic tape
FERRITE
A hard non-conductive magnetic material which is used for construct tape heads and transformers
FET
Field Effect Transistors
FIDELITY
'Faithfulness' to the original sound quality.
FIGURE OF EIGHT PATTERN MICROPHONE
A microphone whose diaphragm can pick up sound from both sides.
FILTER
High, low, band pass.
FINALE
1.Climactic movement of a piece of music. 2. (Coda Finale) PC and MAC based music notation software.
FLANGE
Originally defined as a projecting rim added to a pipe or beam to add strength. In the 1960s, the term was coined by recording engineers and applied to various phase and filter effects used to thicken a sound.
FLANGING
The application of comb filters to obtain special sound effects.
FLASH CONVERTER
A high speed ADC technology used with over sampling.
FPS
Frames (usually motion video frames) per second.
FLETCHER-MUNSON CURVES
FLUTTER
Fluctuations in tape speed.
FLUTTER ECHOES
FM
Frequency Modulation. A type of modulation of transmitted radio waves in which the frequency of the carrier wave is varied in accordance with a signal.
FORMAT
A general arrangement for a product. A format is a set of conventions agreed by the producers of the product.
FOURIER ANALYSIS
A method of analysis of an audio signal employing the Fourier Transform. It provides us with the frequencies and relative magnitudes of all the sine wave components of the signal analysed.
FOURIER SPECTRUM
FOURIER TRANSFORM
A frequency domain or spectral representation of a signal
FREE FIELD
An ipothetical concept in acoustics describing an area free of obstacles that would reflect sound waves. The closest approximation is a point high above ground (if we ignore the effect of the air molecules).
FREQUENCY
The number of recurring events of any kind within a given unit of time. Expressed in cycles per second or Hertz (Hz)
FREQUENCY DOMAIN
FREQUENCY MODULATION
The changing (modulating) of the frequency of a signal (the carrier) by another signal (the modulator).
FREQUENCY PERCEPTION
FREQUENCY RESPONSE
Frequency response of a device (i.e. an amplifier, an effects box, a mixer, an amplifier, etc) describes the relationship between the device's input and output with regard to frequency. It gives us an indication of how a device will attenuate or increase the magnitude of an input signal at different frequencies.
FREQUENCY SPECTRUM
A range of frequencies.
FSK
Frequency Shift Keying
FTC
Frequency Time Curve
FUGUE
Baroque form of music employing contrapuntal and canonic techniques.
FULL DUPLEX
A transmission system, together with its associated equipment, capable of simultaneously transmitting and receiving signals, as opposed to simplex (unidirectional) or half-duplex (one direction at a time) systems.
FUNDAMENTAL
The first, lowest note of a harmonic series. The Fundamental frequency determines a sound's overall pitch.
FUSION ZONE
All reflections arriving at the observer's ear within 20-40ms of the direct sound are integrated, or fused together, with a resulting apparent increase in level and a pleasant change in character. This is the HAAS EFFECT.
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