Mobile Electronics Glossary of Terms and Definitions - E
| Mobile Electronics Glossary - E |
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EBP - Efficiency Bandwidth Product. A guide to determine whether a loudspeaker is more suitable for a sealed or ported enclosure. EBP of less than 50 indicates the loudspeaker should be used in a sealed enclosure. EBP of 50 - 90 indicates flexible design options. EBP over 90 indicates the loudspeaker will work best in a ported enclosure. EBP = Fs / Qes |
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Effect Loop - A signal path which allows an audio processor to be switched in and out of the signal path such as an equalizer. |
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Efficiency - The ratio of energy output to total energy input, expressed as a percentage. With speakers, this refers to the ratio of total acoustic watts radiated to total electrical watts input. |
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EL Backlight - Electro-Luminescent illumination for the lighted portion of a liquid crystal display. |
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Electrolyte - The name for the mixture of diluted sulfuric acid found in standard lead-acid vehicle batteries. |
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Electrolytic Capacitor - A capacitor with a negative and a positive terminal that only passes alternating current. |
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Electromagnetic Interference (EMI) - The interference caused by an electromagnetic field
created by the flow of current. |
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Electrostatic Loudspeaker - A speaker composed of two pieces of metallic foil
separated by a sheet of dielectric unlike a cone and voice coil of a typical cone-type speaker. |
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Enclosure - A box housing a speaker to separate the front sound waves from the rear sound waves. |
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Equalization - The process of changing the frequency balance of a signal so acoustical
energy is proportional to the electrical input (or any type of relative frequency adjustment). |
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Equalizer - A component designed to alter the frequency balance of an audio signal. |
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ESN - A cellular phone's Electronic Serial Number. |
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ESP - Electronic Shock Protection. An electronic circuit that stores the audio data stream from a CD or MD in a memory buffer. If the laser pick-up mistracks, audio still flows from the buffer preventing an interruption. |
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Exa (E) - A prefix meaning 1018 or 1,000,000,000,000,000,000 |
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