High-Quality, Low-Delay Music Coding in the Opus Codec

By Jean-Marc Valin, Gregory Maxwell, Timothy B. Terriberry, Koen Vos. 2013

150 citations recorded by the source corpus.

The IETF recently standardized the Opus codec as RFC6716. Opus targets a wide range of real-time Internet applications by combining a linear prediction coder with a transform coder. We describe the transform coder, with particular attention to the psychoacoustic knowledge built into the format. The result out-performs existing audio codecs that do not operate under real-time constraints.

Subfields: Computer Vision and Pattern Recognition, Signal Processing

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Citations in the corpus

Audiodec: An Open-Source Streaming High-Fidelity Neural Audio Codec (2023, methodology): “For 24 kHz audio signal coding, SoundStream is comparative to the modern state-of-the-art parametric codecs, Opus [10] (12 kbps) and EVS [11] (9.”
Improving Opus Low Bit Rate Quality with Neural Speech Synthesis (2019, methodology): “band (8 kHz sampling frequency) to fullband (48 kHz sampling frequency) speech and audio. It is based on a combination of a linear predictive coding part (SILK [14]) and a transform coding part (CELT [15]). In this work, we focus on wideband speech, i.e., sampled at 16 kHz, using the SILK mode. For ”
A Hybrid DSP/Deep Learning Approach to Real-Time Full-Band Speech Enhancement (2017, methodology): “We choose to divide the spectrum into the same approximation of the Bark scale [12] as the Opus codec [13] uses.”