Post Syndicated from corbet original http://lwn.net/Articles/692988/rss
The PulseAudio 9.0 release is out. Changes include improvements to
automatic routing, beamforming support, use of the Linux memfd mechanism for transport, higher
sample-rate support, and more; see the
release notes for details.
See also: this
article from Arun Raghavan on how the beamforming feature works.
“The basic idea is that if you have a number of microphones (a mic
array) in some known arrangement, it is possible to ‘point’ or steer the
array in a particular direction, so sounds coming from that direction are
made louder, while sounds from other directions are rendered softer
(attenuated).”