<p><br>
2015-9-18 下午8:48於 "David Henningsson" <<a href="mailto:david.henningsson@canonical.com">david.henningsson@canonical.com</a>>寫道:<br>
><br>
> The gnome/unity-control-center UIs have a master volume slider, and<br>
> three sub-sliders: balance, fade, and subwoofer. Balance and fade<br>
> use PA's set_balance and set_fade APIs accordingly, but the subwoofer<br>
> slider sometimes does unintuitive things.<br>
><br>
> In order to make that slider behave better, let's add a LFE balance<br>
> API that these volume control UIs can use instead. With this API,<br>
> the UI can balance between "no subwoofer" and "only subwoofer" with<br>
> "equal balance" in the middle, which would make it more consistent<br>
> with the behaviour of the other sliders.<br>
></p>
<p>Will high frequency signal damge the subwoofer ?</p>