I have some existing "game like" applications that currently use ALSA to produce some sound effects linked to button presses and other events. I've just moved my PCs over from Gentoo to Fedora 8 so I've come across pulseaudio for the first time. I've used some of the examples in the 0.9.8 tarball to get make a first try at using the pulseaudio client APIs with a glib event loop and it seems to be working OK. I have had problems with working out suitable values for the fields in pa_buffer_attr. Because I need the sounds to be synchronised to events on the GUI the default values are unsuitable at they produce a large buffer and latency. But if the values are set too low the audio is noisey, and sounds as if it is being played at the wrong (too low) sampling rate. By trial and error I've settled on the following values for now.... attr.maxlength = 4800; attr.tlength = 2880; attr.prebuf = 960; attr.minreq = 960; These are multiples of 480 because another of the applications produces 480 samples of sound every for each 100Hz timer tick and to change this will require work on code that has been stable for a couple of years and that I would rather prefere not to have to touch (because it's quite complicated ;) ). I've looked but I can't find any guidance in the documentation on how to work out appropriate values for the attr structure. PeterO
