Category Archives: Blog

PulseAudio in Google Summer of Code 2012

By Arun | Published: April 4, 2012

If you’re a student participating in this year’s edition of Google Summer of Code and want to get your hands dirty with some fun low-level hacking, here’s a quick reminder that PulseAudio is a participating organisation for the first time, and we have some nice ideas for you to hack on. The deadline for applications [...]

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Picking your battles

By Arun | Published: March 20, 2012

Most of you have no doubt already seen that Mozilla will be changing their position on H.264 support for HTML5 video in future releases. This is an extremely important decision that I’ve been hoping to see for a while now, and I am really glad this is being done. There is no doubt that we [...]

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Gentoo: PulseAudio + ALSA update

By Arun | Published: February 14, 2012

For a long time now, fellow-Gentoo’ers have had to edit /etc/asound.conf or ~/.asoundrc to make programs that talk directly to ALSA go through PulseAudio. Most other distributions ship configuration that automatically probes to see if PulseAudio is running and use that if avaialble, else fall back to the actual hardware. We did that too, but [...]

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PulseAudio vs. AudioFlinger: Fight!

By Arun | Published: January 16, 2012

I’ve been meaning to try this for a while, and we’ve heard a number of requests from the community as well. Recently, I got some time here at Collabora to give it a go — that is, to get PulseAudio running on an Android device and see how it compares with Android’s AudioFlinger. The Contenders [...]

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Talk video from GstConf 2011

By Arun | Published: November 17, 2011

For those of you who were interested but couldn’t make it to the GStreamer Conference this year, the cool folks at Ubicast have got the talk videos up (can be streamed or downloaded). Among these is my talk about recent developments in the PulseAudio world.

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i’m in yur analog gain, controlling it

By Arun | Published: November 8, 2011

Longish day, but I did want to post something fun before going to sleep — I just pushed out patches to hook up the WebRTC folks’ analog gain control to PulseAudio. So your mic will automatically adjust the input level based on how loud you’re speaking. It’s quite quick to adapt if you’re too loud, [...]

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Notes from the Prague Audio BoFs

By Arun | Published: November 3, 2011

As I’d blogged about last week, we had a couple of Audio BoF sessions last week. Here’s a summary of what was discussed. I’ve collected items in relevance order rather than chronological order to make for easier reading. I think I have everything covered, I’ll update this post if one of the attendees points out [...]

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PragueAudio

By Arun | Published: October 25, 2011

For those who are in Prague for GstConf, LinuxCon, ELCE, etc. — don’t forget we’ve a couple of interesting audio-related things happening: Today (Tuesday), at 4 pm, I’ll be talking about recent developments in PulseAudio Tomorrow (Wednesday), at 11am, we’re continuing the Audio BoF that I had mentioned earlier (since we ran out of time [...]

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PulseAudio 1.1 (the echo release?)

By Arun | Published: October 21, 2011

Yep, if we keep this up, it could even become a habit! PulseAudio 1.1 is out. It’s mostly a bunch of bug fixes on top of 1.0. Most important of these are fixes for: a libpulse dependency on libsamplerate (if enabled) which would make our LGPL license invalid, broken Skype audio capture (because we changed [...]

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Alternate sample rates

By Arun | Published: October 18, 2011

I’ve just pushed a bunch of patches by Pierre-Louis Bossart that can have a pretty decent CPU/power impact. These introduce the concept of an “alternate sample rate”. Currently, PulseAudio runs all your devices at a default sample rate, which is set to 44.1 kHz on most systems (this can be configured). All streams running at [...]

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