Downloaded and did a quick run with existing .fldigi folder all seemed OK with portaudio set.Tried pulse and found receive audio was correctly set to SignaLink USB but TX was set to internal sound device.
Renamed the .fldigi folder and fired up fidigi and went though the wizard. Receive audio was selected correctly but I had to select the SignaLink USB codec under Pulse volume control. So far so good. 73 Roger G6CKR. On Mon, 2010-02-08 at 04:48 +0000, Stelios Bounanos wrote: > >>>>> On Sun, 07 Feb 2010 14:16:58 -0600, w1hkj <[email protected]> said: > > > Fix PulseAudio backend > > * Flush capture stream after transmitting > > * Reduce stream latency > > This commit should make PulseAudio usable again. The main problems were: > > * Spurious error message when ending transmission (my mistake, earlier > PA versions did not catch the error so there was no message). > > * Very coarse waterfall movement on receive due to high capture latency > (2s!) in recent PA versions. > > * Some captured audio (probably silence) would buffered during transmit > and then decoded when going back to receive. I think the problem was > there originally but it was made much worse when the default latency > went up. > > Please test if you use PulseAudio! It will be the default audio backend > for new users from v3.13 onwards if fldigi detects that the pulseaudio > daemon is running. The reason for this change is that just about all > modern distros use PulseAudio and even reroute ALSA to it using a > plugin. Some packaged versions of PortAudio do not work well with this > setup (or indeed even with plain ALSA). > > One noticeable difference from the PortAudio backend is that the device > sample rate is no longer selectable. The PulseAudio daemon probes the > audio device and opens it with the best sample rate, i.e. what fldigi > would do with PortAudio anyway. As a result, PulseAudio also does the > resampling. Fldigi will do its own resampling (using the SRC converter > specified in Audio/Settings) _only_ when the TX or RX PPM settings are > nonzero. You may assume that PulseAudio uses a decent quality/speed > sample rate converter. > > In summary: > > * PulseAudio determines the device sample rate. If you really need to > change that, edit the PulseAudio config (see below). > > * PulseAudio selects the sample rate converter. This setting can also be > changed, e.g. from the default speex-float-3 to src-sinc-fastest or > -medium. > > To change the sample rate, edit ~/.pulse/daemon.conf (copy > /etc/pulse/daemon.conf if you don't have one in ~/.pulse). Find and > change the "default-sample-rate" setting. > > To change the sample converter, edit the same file and change the > "resample-method" setting. Valid resampler names are listed with > "pulseaudio --dump-resample-methods". Example: > > resample-method = src-sinc-fastest > > Remember to restart pulseaudio with "pulseudio -k; pulseaudio -D". > > > Finally, I intend to remove the OSS backend after 3.13 is out. It does > nothing that PortAudio/OSS doesn't do. > > _______________________________________________ fldigi-alpha mailing list [email protected] https://lists.berlios.de/mailman/listinfo/fldigi-alpha
