At Fri, 11 Apr 2008 22:46:11 +0200, Lennart Poettering wrote: > > Now the thing is, this mostly works fine, however on one of my > devices, a pair of external Logitech USB speakers (ID 046d:0a04 > Logitech, Inc. V20 portable speakers), the dB scale seems to be > totally bogus. According to ALSA volume ranges from -41 dB to > +3dB. However, Every setting > -41 dB makes audio awfully > loud. Really, really fucking loud that is. Disco loud. As loud that > the speakers start jump around centimeters due to the massive > vibrations. Setting the volume to 0dB with those speakers really makes > you fear you are trashing them. This is typically a problem of your usb hardware. The USB descriptor gives the dB level information and the usb-audio driver simply passes the given data as dB scale information. But, the hardware actually doesn't behave as it states. Unfortunately a frequent problem with cheap USB audio devices. So, it's definitely no universal ALSA problem. Please don't mix up. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
