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RADIO
RADIO MICROPHONES
RADIO WAVES
RAM
Random Access Memory. Memory used for temporary storage of data.
RAY
At higher audio frequencies sound may be considered to travel in straight lines, in a direction normal to the wave front.
RANDOM NOISE
R-DAT
Digital tape machine employing a rotary head mechanism.
REACTANCE
REACTIVE ABSORBER
REACTIVE SILENCER
REAL TIME
Used to describe a process carried out while another is going on. For example inputting MIDI data in a sequencer while it is running or processing an audio/video signal while it is been played back or recorded. Opposite terms include step time, off line, non-real time.
REAL TIME ANALYSER
REED-SOLOMON CODE
Powerful error correcting code.
RECAPITULATION
Final section of a sonata movement.
RECORDING
RECORD PLAYER
Machine consisting of a stylus and turntable, which plays phonograph records.
REFERENCE
REFLECTION
RELEASE
Once akey is released this parameter of the ADSR envelope, determines the rate of decay of the signal amplitude.
RESISTANCE
RESOLUTION
1. An indication of the accuracy of a digitising system. It is affected by the number of bits used to store the digitised information and of the A/D converters design. 2. An indication of the 'quality' of an image. Print resolution is measured in Dots per Inch (DPI) while screen resolution is measured by the number of pixels.
RESONANCE
RESPONSE
REST
REVERBERATION
REQUANTIZING
The process of shortening sample length
RF
Radio frequency.
RF INTERFERANCE
RFZ
Reflection Free Zone
RGB
Red, Green, Blue. An RGB video signal employs these three colours to display an image. VGA and SVGA computer video cards employ this method.
RIAA
Equalisation record players
RIBBON MICROPHONE
A microphone employing a thin metal ribbon suspended in a magnetic field as a transducer.
RING MODULATOR
An electronic device that processes two input signals. The frequency content of the output signal generated is based on the sum and subtraction of the frequency content of the two input signals.
RMS
Root Mean Square.
ROLL OFF
A measure of the rate a filter will attenuate frequencies exceeding its cut-off frequency.
ROOM MODES
ROM
Read Only Memory. Permanent, non-volatile storage medium. It is often used to store operating systems.
ROUND WINDOW
In the ear
ROUTING
RPG CLOUD
Reflection-phase gratings arranged for overhead mounting.
RS 422
A computer interface. A high-speed serial communication port, which allows data to be transferred to and from an external computer at a very high rate (500K baud).
RT
Reverberation Time
RUMBLE
In record players |
