Actually (unrelated to Pi 3), audio was recently improved in an experimental driver.<p>From the engineer who worked on it:<p>&gt; I reimplemented the original PWM-based 11-bit audio @48kHz as 7-bit 2nd-order Sigma-Delta modulated at 781.25kHz. The effective noise floor with this scheme approximates that of CD-quality audio DACs.<p>from the forums <a href="https:&#x2F;&#x2F;www.raspberrypi.org&#x2F;forums&#x2F;viewtopic.php?f=29&amp;t=136445" rel="nofollow">https:&#x2F;&#x2F;www.raspberrypi.org&#x2F;forums&#x2F;viewtopic.php?f=29&amp;t=1364...</a>