What app does OpenCPN call to play sounds?

[conachair]

Originally Posted by baltika_no_9

Interestingly I select a WAV file in Watchdog configuration and press OK but when I go back and edit the alarm the drop down box where the sound is selected shows "None". I would have expected my selection to have been kept.

Same here

Managed to get aplayer to play a file anyway, though sounds the same in opencpn as before - slow and distorted >
(test.wav is a watchdog warning)

pi@openplotter:~/.opencpn/OpenCPN_Watchdog-Voice_Warnings-English $ sox test.wav test2.wav channels 2 
pi@openplotter:~/.opencpn/OpenCPN_Watchdog-Voice_Warnings-English $ aplay test2.wav 
Playing WAVE 'test2.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
pi@openplotter:~/.opencpn/OpenCPN_Watchdog-Voice_Warnings-English $ play test2.wav 

test2.wav:

 File Size: 652k      Bit Rate: 1.41M
  Encoding: Signed PCM    
  Channels: 2 @ 16-bit   
Samplerate: 44100Hz      
Replaygain: off         
  Duration: 00:00:03.70  

In:100%  00:00:03.70 [00:00:00.00] Out:163k  [      |      ] Hd:0.3 Clip:0    
Done.

[seandepagnier]

The file selector is broken. It maybe displays "none" but it should still play the file

[rgleason]

I think this rpi bug should go into tracker!

[conachair]

Originally Posted by rgleason

I think this rpi bug should go into tracker!

The sound issue might be more Pi related but would be nice to get it working OK. On my system using a hifiberry amp the sound will play, but distorted and wrong speed. Tried a load of different rate settings using sox but nothing seems to get a clear sound, aplay plays back OK.

Is there a terminal command which emulates how O calls the sound? Might make diagnostics easier.

I get a load of errors when starting Opencpn - not sure if these are related >

pi@openplotter:~ $ opencpn
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.front
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround21
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround40
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround41
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround50
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround51
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.surround71
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.iec958
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.hdmi
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.modem
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pcm.c:2239:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.phoneline
ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused

ALSA lib pulse.c:243:(pulse_connect) PulseAudio: Unable to connect: Connection refused

Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started

For some watchdog alarms I can use the command line option like >
aplay ~/.opencpn/OpenCPN_Watchdog-Voice_Warnings-English/test2.wav

But can't get the boundary alarms to work which does look like a bug - would that be best put in flyspray?

[seandepagnier]

The watchdog works fine for me on my raspberry pi for the normal sounds. I don't have to execute aplay.

Are you using the broadcom sound output, or the hdmi?

[rgleason]

Watchdog sounds work fine for Windows/Win10 OS.

[conachair]

Originally Posted by boat_alexandra

Are you using the broadcom sound output, or the hdmi?

On my system using a hifiberry amp the sound will play, but distorted and wrong speed

https://www.hifiberry.com/shop/boards/hifiberry-amp2/


Sorry, should have put - In my case the issue is very likely Pi based.

If there is a terminal command to emulate how O produces the sound it might help.

pi@openplotter:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ Hi Fi pcm512x-hifi-0 []
Subdevices: 0/1
Subdevice #0: subdevice #0
pi@openplotter:~ $ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
sysdefault:CARD=sndrpihifiberry
snd_rpi_hifiberry_dacplus,
Default Audio Device
dmix:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct sample mixing device
dsnoop:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct sample snooping device
hw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Direct hardware device without any conversions
plughw:CARD=sndrpihifiberry,DEV=0
snd_rpi_hifiberry_dacplus,
Hardware device with all software conversions

[baltika_no_9]

Well I finally have this working.

Set up is on a Raspberry Pi 3B+, OCPN 4.8.4

I disabled the onboard audio in /boot/config.txt, edited files /usr/share/alsa/alsa.conf and /etc/asound.conf to point to card 1 (my USB speaker as shown in response to "aplay -l".

In OCPN I changed Tools>Options>User Interface>Sound Device Index to 1 and Watchdog and AIS test alarms work fine. Phew.

[conachair]

Originally Posted by baltika_no_9

In OCPN I changed Tools>Options>User Interface>Sound Device Index to 1 and Watchdog and AIS test alarms work fine. Phew.

Just set the sound index to 1 as a test and it works fine now, thanks!!

[rgleason]

Conachair, would you mind writing several sentences to answer the FAQ question:
"Why don't AIS and Watchdog Sound Alarms work on RPI?"

[conachair]

Originally Posted by rgleason

Conachair, would you mind writing several sentences to answer the FAQ question:
"Why don't AIS and Watchdog Sound Alarms work on RPI?"

Would love to but I don't know!!

Sound on the Rpi is for me an area which still remains shrouded in mystery, I just fiddled with a setting then it worked.

Magic pixies I reckon

[rgleason]

Ok Conachair, can you help me out here for Linux & RPI specific threads?


http://www.cruisersforum.com/forums/...ml#post2633861

[stelian]

Hi,


I know this is an old thread, but I've encountered the same problem here (distorted sound in watchdog plugin), and finally found out that the wav file MUST be 16 bit, mono 22050 Hz in order to play correctly.


I've converted the sounds from mp3 to wav using:

mpg123 -2 -m -w out.wav in.mp3

(this is on a Raspberry PI using OpenPlotter 1.1.0 alpha)

[rgleason]

Stelian, thank you new FAQ



https://opencpn.org/wiki/dokuwiki/do...ms_work_on_rpi