GSM frequency bands — or frequency ranges are the cellular frequencies designated by the ITU for the operation of GSM mobile phones. Contents 1 GSM frequency bands 1.1 GSM 900, GSM 1800 and EGSM/EGSM 900 1.1.1 GSM 1800 … Wikipedia
Electromagnetic compatibility — (EMC) is the branch of electrical sciences which studies the unintentional generation, propagation and reception of electromagnetic energy with reference to the unwanted effects (Electromagnetic Interference, or EMI) that such energy may induce.… … Wikipedia
IEEE Electromagnetic Compatibility Society — Infobox Organization name = IEEE Electromagnetic Compatibility Society image border = size = caption = formation = 1957 type = location = membership = language = English leader title = leader name = key people = num staff = budget = website =… … Wikipedia
Utility frequency — The waveform of 230 volt, 50 Hz compared with 110 V, 60 Hz. The utility frequency, (power) line frequency (American English) or mains frequency (British English) is the frequency at which alternating current (ac, also AC) is transmitted from a… … Wikipedia
Dual-tone multi-frequency signaling — One of the few production telephone DTMF keypads with all 16 keys, from an Autovon Telephone. The column of red keys produces the A, B, C, and D DTMF events. Dual tone multi frequency signaling (DTMF) is used for telecommunication signaling over… … Wikipedia
Dual-tone multi-frequency — (DTMF) signaling is used for telephone signaling over the line in the voice frequency band to the call switching center. The version of DTMF used for telephone tone dialing is known by the trademarked term Touch Tone (canceled March 13, 1984),… … Wikipedia
Aircraft emergency frequency — The aircraft emergency frequency (also known as guard) is a frequency used on the aircraft radio band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air… … Wikipedia
Low-frequency effect — Low Frequency Effects (LFE) is the name of an audio track specifically intended for deep, low pitched sounds ranging from 3 200 Hz. This track is normally sent to a speaker that is specially designed for low pitched sounds called the subwoofer or … Wikipedia
GYM — is a sound format for the Sega Mega Drive/Sega Genesis.The name stands for Genesis YM2612, since the file contains the data sent to the Yamaha YM2612 sound chip in the console. The data is logged to a file through the use of emulators running a… … Wikipedia
G.729.1 — is an 8 32 kbit/s embedded speech and audio coderproviding bitstream interoperability with G.729, G.729 Annex A and G.729 Annex B. Thiscoder has been designed to provide better quality and more flexibilitythan the existing ITU T G.729 speech… … Wikipedia
