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What (who) is F2 ratios - definition
Log Area Ratios; Log area ratios
Northrop M2-F2
LIFTING BODY PROTOTYPE
M2-F2; M2F2
The Northrop M2-F2 was a heavyweight lifting body based on studies at NASA's Ames and Langley research centers and built by the Northrop Corporation in 1966.
Log area ratio
Log area ratios (LAR) can be used to represent reflection coefficients (another form for linear prediction coefficients) for transmission over a channel. While not as efficient as line spectral pairs (LSPs), log area ratios are much simpler to compute.
KMW F2
ARMORED VEHICLE
The KMW F2
The KMW F2 is a family of modular wheeled armoured vehicles, manufactured by KMW. The F2 is designed as a supplement to the Fennek and is intended to provide a maximum of mobility, protection and growth potential.
Wikipedia
Log area ratio
Log area ratios (LAR) can be used to represent reflection coefficients (another form for linear prediction coefficients) for transmission over a channel. While not as efficient as line spectral pairs (LSPs), log area ratios are much simpler to compute. Let be the kth reflection coefficient of a filter, the kth LAR is:
Use of Log Area Ratios have now been mostly replaced by Line Spectral Pairs, but older codecs, such as GSM-FR use LARs.
