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This page was created during the SAT meeting on Thursday March 6th in Tokyo at the AGL AMM Spring 2019.

History shows that 4A was spawn because (shared by Fulup):

Santa Clara meeting stated that the policy manager was the most important one (AudioKinetics committed to do)

After that, a softmixer was added as a natural progression. Some of that was driven by feature limitations or differences between HW products (from members and others).

Jan-Simon shared the URL for the November 2017 F2F  Notes


  • Must be able to implement features by HW products (amps/DSP solutions including low-cost solutions)
  • walt (hidden requirement): leveraging open source requirements

TODO and action items

  • Identify the requirements that were used to create 4A initially
  • Find the presentation about the 4A genesis and previous efforts
  • Create a timeline for next steps on work to be performed
  • Identify how to make high-level 4A (alsa?) to work with pipewire as audio middleware
  • Coordinate with video architecture efforts
  • Test integration between pipewire and Microchip microphone (George and Michael)

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1 Comment

  1. Here is a better diagram of the pipewire architecture: