Hacking the Sonos Ikea Symfonisk Into a High Quality Speaker Amp

If you’re interested, the simplified math of Trueplay is really quite, well, simple*. I wrote up a crude explanation here once for someone on this sub:

https://www.reddit.com/r/sonos/comments/cil372/why_no_trueplay_on_android_devices/ev78u7u/

There isn’t nearly as much intelligence as you suggest because the physics doesn’t require it. We don’t have to know speaker location or volume of the room, all we need is to play a known sound that covers all frequencies, listen back, and adjust for the error at each frequency.

  • The actual math is somewhat more complicated when you get into understanding Laplace transforms, and then for practical digital hardware applications, their discrete counterparts (z-transforms). Your bio says you’re a MechE so if you get a chance to study control systems, which I highly recommend, you should cover all of this. It might be an EE class but I’m sure if the degree is structured right, it’ll be a cross-credit for MechE’s like it was at my university. Plus control systems are applicable to robots, cruise control/autopilot, pacemakers, bridges, and so much more. So it’s not only a great time, but it really should be required for all engineering disciplines.
/r/sonos Thread Parent Link - makezine.com