TIA
TIA or Tia may refer to:
Aviation
* Tampa International Airport, US, IATA code TPA
* Texas International Airlines, US, ICAO code
* Tirana International Airport Nënë Tereza, Albania, IATA code
* Trans International Airlines, former U.S. airl ...
/
EIA Eia or EIA may refer to:
Medicine
* Enzyme immunoassay
* Equine infectious anemia
* Exercise-induced anaphylaxis
* Exercise-induced asthma
* External iliac artery
Transport
* Edmonton International Airport, in Alberta, Canada
* Erbil Internation ...
standard IS-641 is a
speech coding
Speech coding is an application of data compression of digital audio signals containing speech. Speech coding uses speech-specific parameter estimation using audio signal processing techniques to model the speech signal, combined with generic da ...
standard used in some
computer
A computer is a machine that can be programmed to Execution (computing), carry out sequences of arithmetic or logical operations (computation) automatically. Modern digital electronic computers can perform generic sets of operations known as C ...
and
telecommunications network
A telecommunications network is a group of nodes interconnected by telecommunications links that are used to exchange messages between the nodes. The links may use a variety of technologies based on the methodologies of circuit switching, message ...
s in the U.S.A. The main usage was in the U.S.
TDMA networks defined by IS-136. The bit rate of the speech
codec
A codec is a device or computer program that encodes or decodes a data stream or signal. ''Codec'' is a portmanteau of coder/decoder.
In electronic communications, an endec is a device that acts as both an encoder and a decoder on a signal or da ...
is 7.4 kbit/s. This codec is the same as the 7.4 kbit/s mode in the
AMR speech codec. The standard has been superseded by TIA/EIA-136-410.
Speech codecs
Mobile telecommunications standards
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