> there is a runtime instance for a pcm stream, and this holds the > informaton such as the current rate, channels, formats, etc. > there is no pitch parameter implemented in alsa, but this can be added > easily into the runtime instance, if inevitablly necessary.
i don't think the audiowerk is the only card capable of varipitch, though most cards don't support it, but it is a nice feature and since alsa is supposed to be advanced... :) > alsa pcm engine invokes a timer interrupt to update the "tick", and > this tick is determined using the rate of the runtime instance. > if you change the rate value dynamically during playback, then the > tick interrupt will be wrongly scheduled, and leads to wrong detection > of under/overrun. shouldn't the driver detect under/overrun? would a soundcard with a bad dac (as in not accurate) also cause problems? --martijn _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
