[Discuss-gnuradio] gr-audio-portaudio produces choppy sound on NetBSD

[Berndt Josef Wulf]

G'day,

I'm working on a package for gr-audio-portaudio. I'd no problems porting the 
portaudio application and getting gr-audio-portaudio to build.

Sound rendered by the portaudio test application is perfect. Contrary to this, 
sound played using gr-audio-portaudio API using the gnruadio audio test 
applications result in choppy sound. It appears to be caused by underrun 
conditions see below:

barossa: {260} ./dial_tone.py
Number of devices found = 1
--------------------------------------- device #0
[ Default Input, Default Output ]
Name                        = /dev/audio
Host API                    = OSS
Max inputs = 2, Max outputs = 2
Default low input latency   =    0.012
Default low output latency  =    0.012
Default high input latency  =    0.046
Default high output latency =    0.046

Test Devices
Testing device name: /dev/audio  Chosen!
/dev/audio using OSS as the host

Latency =  0.02133, requested sampling_rate = 48000
d_portaudio_buffer_size_frames = 1024
ring buffer size  = 4096 frames
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Any one else experiencing this?


cheerio Berndt

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