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Tera (T) - A prefix meaning 10
12 or 1,000,000,000,000 (one trillion in the US).
Threshold of Pain (in dB SPL) - The minimum value of sound pressure
of a given frequency that will cause pain to a listener 50% of the time. Discomfort begins at 118 dB SPL
Actual pain starts around 140 dB SPL within the frequency range btween 200 Hz and 10,000 Hz.
TOC / Table Of Contents - The subcode information which contains track numbers
and times.
Total Harmonic Distortion (THD) - The noise referenced to signal in decibels (dB) as
a percentage.
Tracking Servo - The control circuit used to keep the pick-up over the desired track.
Transducer - A device used to convert energy from one form to another.
Acoustical to electrical (microphone), electrical to acoustical (speaker), and
electrical to mechanical (Aura Bass Shaker) are three examples of transducers.
Transistor - A three terminal device used for amplication and switching.
Tuner - A component (or section of one) that receives radio signals and
selects one broadcast from many.
Tweeter - A high frequency driver specificaly designed to reproduce only
the high frequencies (treble) of the audible spectrum.
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