Mobile Electronics Glossary of Terms and Definitions - T

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Mobile Electronics Glossary - T

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Tera (T) - A prefix meaning 10¹² or 1,000,000,000,000 (one trillion in the US).

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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 between 200 Hz and 10,000 Hz.

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TOC / Table Of Contents - The subcode information which contains track numbers and times.

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Toroidal Coil - An inductor or transformer whose core consists of a concentrically wound ribbon of magnetic material. Also used to filter noise on a DC supply line.

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Total Harmonic Distortion (THD) - The noise referenced to signal in decibels (dB) as a percentage.

Noise referenced to Signal
-10.0 dB
-20.0 dB
-30.0 dB
-40.0 dB
-50.0 dB
-60.0 dB
-70.0 dB
-80.0 dB

Percent Distortion
31.6%
10.0%
3.16%
1.00%
0.316%
0.100%
0.0316%
0.0100%

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Tracking Servo - The control circuit used to keep the pick-up over the desired track.

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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.

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Transformer - An electrical device that can be used to provide circuitry isolation, signal coupling, impedance matching, or voltage step-up .

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Transistor - A three terminal device used for amplification and switching.

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Tuner - A component (or section of one) that receives radio signals and selects one broadcast from many.

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Tweeter - A high frequency driver specifically designed to reproduce only the high frequencies (treble) of the audible spectrum.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Mobile Electronics Basics:
• Diodes
• Glossary of Terms and Definitions
• Ohm's Law
• Recommended Books & DVD's
• Recommended Wire Sizes
• Relays
• Resistors
• Tools and Equipment

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