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The voice codec G.723.1 uses Multiple Maximum Likelihood Quantization (MPMLQ) and a data rate of 6.3 kbit/s, with a sampling rate of 8 kHz.

As with telephony, the voice frequency range is between 300 Hz and 3.4 kHz, but the delay time is quite high with values between 67 ms and 97 ms.

Coding method for voice transmission

Coding method for voice transmission

G.723.1 has a compression ratio of 12:1 and an MOS value of 3.9. G.723, on the other hand, which manages with a data rate of only 5.3 kbit/s, has an MOS value of only 3.5 to 4.0. G.723.1 operates in voice coding with a data rate of 6.4 kbit/s and specifies a delay time of 67.5 ms.

G.723.1 supports full duplex or half duplex and can be used in multimedia systems with digital signal processing. The quality of voice communication is lower than with other voice codecs such as G.711.

Englisch: G723
Updated at: 06.07.2018
#Words: 138
Links: voice codec, data rate, sampling rate, kilohertz (kHz), arsenic (As)
Translations: DE

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