<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Microsoft LifeChat LX-3000 USB Audio Headset DB issue with Volume Scale" href="https://bugs.freedesktop.org/show_bug.cgi?id=46236#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Microsoft LifeChat LX-3000 USB Audio Headset DB issue with Volume Scale" href="https://bugs.freedesktop.org/show_bug.cgi?id=46236">bug 46236</a> from <a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> Raymond</a> <pre>USB Audio 1.0 Specification 5.2.2.2.3 Mixer Control A Mixer Unit consists of a number of Mixer Controls, either programmable or fixed. A Mixer Control can support all possible Control attributes (CUR, MIN, MAX, and RES). The settings for the CUR, MIN, and MAX attributes can range from +127.9961 dB (0x7FFF) down to -127.9961 dB (0x8001) in steps of 1/256 dB or 0.00390625 dB (0x0001). The range for the CUR attribute is extended by code 0x8000, representing silence, i.e., -∞ dB. The settings for the RES attribute can only take positive values and range from 1/256 dB (0x0001) to +127.9961 dB (0x7FFF).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>