[LAD] Presenting volume control sliders

Heya! I am currently working on the volume control handling of PulseAudio. Until now the sliders in the UI mapped their position linearly to the dB volume scale. i.e. if the slider is at '0%' we get -90dB, if it is at '100%' we get 0dB, and between that we map linearly from those percentages to the dB value. To be frank, this sucked big time because the 'interesting' part is usually way up at -10dB to 0dB. and the remaining part of the volume sliders is pretty boring. mixer controls usually have a much higher dB resolution near 0dB then the have near -90dB. Most of the time the steps they choose are very arbitrary however. So, I was looking for better suggestions for mapping 'pixel distances' in the UI to volume factors. I googled a bit and found this: http://www.robotplanet.dk/audio/audio_gui_design/ Which suggests a cubic relation between 'pixel distances' and the linear factor. Any opinions on that? Other suggestions? Thanks, Lennart -- Lennart Poettering Red Hat, Inc. lennart [at] poettering [dot] net http://0pointer.net/lennart/ GnuPG 0x1A015CC4