Voice quality evaluation of recent open source codecs

This paper introduces Silk, CELT, and BroadVoice that are available in the internet as open source voice codecs. Their voice quality is evaluated with a subjective listening test. AMR, AMR-WB, G.718, G.718B, and G.722.1C were used as standardized references. In addition Skype's Silk codec's peculiar bandwidth and bitrate characteristics are examined in more detail.

• Type: Journal
• Year: 2010
• Where: INTERSPEECH
• Authors: Anssi Rämö, Henri Toukomaa
• Keywords: INTERSPEECH 2010, Peculiar Bandwidth, Signal Processing, Source Voice Codecs, Subjective Listening Test