Stuttering audio about dab-cmdline HOT 6 CLOSED

I'm having some trouble with this dab-cmdline application on Raspbian (RPi 3b+). When listening to a DAB+ radio station in Belgium, I always get *stuttering audio*. When using Dablin together with eti-cmdline I get also stuttering audio. On Windows I get nice sound without any hickups. So it isn't a reception issue. What could be causing this problem? Used command: ./dab-rtlsdr-3 -C 12A -P Klara -Q | aplay -r 48000 -f S16_LE -t raw -c 2 -v Output: Copyright 2017 J van Katwijk, Lazy Chair Computing opt = C opt = P opt = Q going for rtlsdr 223936000 45 OK, functions seem to be loaded Found Fitipower FC0012 tuner samplerate set to 2048000 Supported gain values (5): -9.-9 -4.0 7.1 17.9 19.2 effective gain: gain 7.1 ensemble DAB+ VRT is (6001) recognized Radio 1 (6301) is part of the ensemble Klara (6303) is part of the ensemble Radio 2 LIM (6602) is part of the ensemble Studio Brussel (6304) is part of the ensemble Radio 2 O-VL (6C02) is part of the ensemble Radio 2 ANT (6502) is part of the ensemble TPEG (data) (E0600001) is part of the ensemble Radio 2 W-VL (6B02) is part of the ensemble Radio 2 VL-BR (6402) is part of the ensemble MNM (6305) is part of the ensemble VRT NWS (631E) is part of the ensemble MNM Hits (631F) is part of the ensemble Klara Continuo (631A) is part of the ensemble there might be a DAB signal here we try to start program Klara protection handler is eep_protection we have now DAB+ Playing raw data 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo Plug PCM: Hardware PCM card 0 'bcm2835 ALSA' device 0 subdevice 0 Its setup is: stream : PLAYBACK access : RW_INTERLEAVED format : S16_LE subformat : STD channels : 2 rate : 48000 exact rate : 48000 (48000/1) msbits : 16 buffer_size : 24000 period_size : 6000 period_time : 125000 tstamp_mode : NONE tstamp_type : MONOTONIC period_step : 1 avail_min : 6000 period_event : 0 start_threshold : 24000 stop_threshold : 24000 silence_threshold: 0 silence_size : 0 boundary : 1572864000 appl_ptr : 0 hw_ptr : 0` — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#59>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AITzwBfpL5mZxEb6qVP6vaXIYlhONGLrks5vc7gogaJpZM4cZAze> .

Thanks for the message. Did you have a look at the processorload? I (vagely) remember that in the combination you are using the load on one of the cores was too high. There are three possible causes a. the signal is weak and not all frames can be recognized and/or decoded b. there is an overload on one (or more) of the processor cores c. the audio subsystem needs larger buffers - due to irregular arrival of data I'll run the combination later today (I usually use the built in portaudio driver) Op di 2 apr. 2019 om 22:06 schreef maartenlambrecht < ***@***.***>: > I'm having some trouble with this dab-cmdline application on Raspbian > (RPi 3b+). > When listening to a DAB+ radio station in Belgium, I always get *stuttering > audio*. > When using Dablin together with eti-cmdline I get also stuttering audio. > On Windows I get nice sound without any hickups. So it isn't a reception > issue. > > What could be causing this problem? > > Used command: > ./dab-rtlsdr-3 -C 12A -P Klara -Q | aplay -r 48000 -f S16_LE -t raw -c 2 > -v > > Output: > > Copyright 2017 J van Katwijk, Lazy Chair Computing > opt = C > opt = P > opt = Q > going for rtlsdr 223936000 45 > OK, functions seem to be loaded > Found Fitipower FC0012 tuner > samplerate set to 2048000 > Supported gain values (5): -9.-9 -4.0 7.1 17.9 19.2 > effective gain: gain 7.1 > ensemble DAB+ VRT is (6001) recognized > Radio 1 (6301) is part of the ensemble > Klara (6303) is part of the ensemble > Radio 2 LIM (6602) is part of the ensemble > Studio Brussel (6304) is part of the ensemble > Radio 2 O-VL (6C02) is part of the ensemble > Radio 2 ANT (6502) is part of the ensemble > TPEG (data) (E0600001) is part of the ensemble > Radio 2 W-VL (6B02) is part of the ensemble > Radio 2 VL-BR (6402) is part of the ensemble > MNM (6305) is part of the ensemble > VRT NWS (631E) is part of the ensemble > MNM Hits (631F) is part of the ensemble > Klara Continuo (631A) is part of the ensemble > there might be a DAB signal here > > we try to start program Klara > protection handler is eep_protection > we have now DAB+ > Playing raw data 'stdin' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo > Plug PCM: Hardware PCM card 0 'bcm2835 ALSA' device 0 subdevice 0 > Its setup is: > stream : PLAYBACK > access : RW_INTERLEAVED > format : S16_LE > subformat : STD > channels : 2 > rate : 48000 > exact rate : 48000 (48000/1) > msbits : 16 > buffer_size : 24000 > period_size : 6000 > period_time : 125000 > tstamp_mode : NONE > tstamp_type : MONOTONIC > period_step : 1 > avail_min : 6000 > period_event : 0 > start_threshold : 24000 > stop_threshold : 24000 > silence_threshold: 0 > silence_size : 0 > boundary : 1572864000 > appl_ptr : 0 > hw_ptr : 0` > > — > You are receiving this because you are subscribed to this thread. > Reply to this email directly, view it on GitHub > <#59>, or mute the > thread > <https://github.com/notifications/unsubscribe-auth/AITzwBfpL5mZxEb6qVP6vaXIYlhONGLrks5vc7gogaJpZM4cZAze> > . > -- Jan van Katwijk

Just a quick remark Your screenshots show lots of errors. Don't you have a better signal in Belgium? — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#59 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AITzwIQiJvX26_d_eCiJ9L5WIdA36G7Pks5vdQshgaJpZM4cZAze> .