Opus Audio Codec is a lossy Audio coding format recently developed by the Internet Engineering Task Force (IETF) for real-time voice transmission over a network, in the standard format RFC 6716. The Opus format is an open format with no patents or restrictions on its use.The core principles of the Opus Audio Codec are a blend of audio codec technologies, including Linear predictive coding (LPC) , MDCT transform, vector quantization, entropy coding, and more. It makes use of the characteristics of speech signal to carry out acoustic modeling and data compression, in order to achieve efficient audio encoding and decoding.
Opus Audio Codec is a versatile audio codec that is suitable for various applications, from video conferencing (such as Google Meet) to online video streaming (such as YouTube). The compression ratios supported by Opus are very flexible, ranging from 6 kilobits per second to 510 kilobits per second.
Download: Opus Audio Codec 1.5.2-16 (3.7 MB)
Download: Opus Audio Codec 1.5.2 (5.1 MB)
Download: Opusfile 0.9 (1.4 MB)
Download: Opus Frontend