This describes the quality improvements that Opus 1.1 brought over version 1.0, including improved VBR, tonality estimation, surround improvements, and speech/music classification.
This demo describes the new Daala deringing filter that replaces a previous attempt with a less complex algorithm that performs much better. Those who like to know all the math details can also check out the full paper.
This demonstrates the Perceptual Vector Quantization technique currently used in Daala and inspired from the Opus codec.
This demonstrates a technique that turns images into what looks like paintings. The application for this is intra prediction and deringing filtering for the Daala video codec. Because of complexity issues, it was never adopted in Daala, but inspired a new deringing filter that landed in Sep. 2015.
This shows the Spartacus robot participating in the 2005 AAAI challenge. Spartacus includes noise-robust sound localization and separation capabilities.
In this video, the robot is controlled only by sound localization. It turns towards the sound source that has been present for the longest amount of time and moves towards it.
This shows localization capabilities using an array of 8 microphones mounted at the vertices of an empty cube. This video was presented at IROS 2003.