Try getting Espeak to go through an alsa device, then configure that alsa device to convert mono to stereo -- should be doable via an appropriately configured .alsa file. ESpeak might well be using pulseaudio -- and that might complicate things. -- Best Regards, --raman On 8/6/13, Geoff Shang <geoff@xxxxxxxxxxxxxxx> wrote: > Hi, > > I'm trying to get Espeakup working with an external USB soundcard, due to > the crash issues one faces when using Espeakup with the internal soundcard > on the Raspberry Pi. > > The problem I've run into is that the USB device doesn't know how to > handle mono audio. If I play a stereo file, it works fine. If I play a > mono one, it fails. > > I suspect that Espeakup is failing for the same reason. > > Since there doesn't appear to be any command line options to Espeakup to > make it do this, I wondered if there might be some ALSA trickery, like > using the ALSA_CARD variable to choose which soundcard to use. All the > solutions I've found so far however implement something at the plug level > which would appear to be a bit high up. > > Any thoughts on this? This is fairly urgent. > > Cheers, > Geoff. > > _______________________________________________ > Blinux-list mailing list > Blinux-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/blinux-list > _______________________________________________ Blinux-list mailing list Blinux-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/blinux-list