![]() This can be freely used for VoIP applications, there aren’t any licensing fees. It’s bitrate for one direction is 64kbit/s, consuming 128kbit/s, which is a lot in comparison to other codecs. So, the compression ratio it achieves is 1:2. This utilizes a logarithmic compression and squeezes 16-bit samples to 8-bits. Both being the default standard in each respective country. ![]() It has 2 variants, u-Law in the US and Japan, and A-Law in Europe. ITU introduced this codec in 1972 for digital telephony use. The MOS values run between 1 and 5, 1 being bag and 5 being excellent. ![]() The score is assigned using the P.800 and P.830 standards of the ITU-T. The MOS standard measures the audio quality following compression, transmission, and decompression. When we mention MOS it means Mean Opinion Score. ![]() There are a number of types of codecs, each relying on different technology.įor the purposes of VoIP, there are a variety of options that are popular and used commonly. It relies on an algorithm to shrink the size of the file, and decompress it when required. A codec is an encoding tool it processes audio and video, storing it. ![]()
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