portaudio2/device busy?

[Tamas Hegedus <hegedus@med.unc.edu>]

Hi,

I would like to use espeak (text to voice application).
I got error the error messages below.

It was reported that several years ago it was a segmentation fault of 
portaudio19 (segmentation fault if device is busy; espeak uses 
libportaudio2). Later on the same messages are emitted I get. But I can 
not find any solution for this (I goggled). Any idea?

Thanks in advance,
tamas

espeak "this is a test"
Expression 'parameters->channelCount <= maxChans' failed in 
'src/hostapi/alsa/pa_linux_alsa.c', line: 924
Expression 'ValidateParameters( outputParameters, hostApi, 
StreamDirection_Out )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', 
line: 1142
Expression 'parameters->channelCount <= maxChans' failed in 
'src/hostapi/alsa/pa_linux_alsa.c', line: 924
Expression 'ValidateParameters( outputParameters, hostApi, 
StreamDirection_Out )' failed in 'src/hostapi/alsa/pa_linux_alsa.c', 
line: 1142
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)
wave_open_sound > Pa_OpenStream : err=-9996 (Invalid device)