Thanks for reactivity,
Pulse audio is now uninstalled.
I was able to get sound from Alsa:
odroid@odroid:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ODROIDHDMI [ODROID-HDMI], device 0: SPDIF PCM dit-hifi-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: ODROIDDAC [ODROID-DAC], device 0: PCM5102 HiFi pcm5102-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
odroid@odroid:~$ aplay -D hw:CARD=ODROIDDAC,DEV=0 Desktop/foo.wav
Playing WAVE 'Desktop/foo.wav' : Signed 16 bit Little Endian, Rate 44100 Hz,
Stereo
^CAborted by signal Interrupt...
Fluidsynth gets right rate:
odroid@odroid:~$ fluidsynth -C0 -R0 -r 44100 -c2 -v -d -a alsa -m alsa_seq
/home/odroid/Documents/bandoneon_v2.sf2
Changing the rate has an expected impact: even distorted, switching from 48000
to 96000 will increase the notes of one octave.
I also try to change the soundfont without improvement.
Indeed, the CPU is a 32-bits Cortex-A5…
HLB
> Message du 15/11/19 10:26
> De : "Philippe Simons"
> A : "FluidSynth mailing list"
> Copie à : "Etienne Besançon"
> Objet : Re: [fluid-dev] Distorted Sound with FluidSynth + Alsa on a SBC
>
>
device seems to be powerful enough.
maybe you can also try to disable 64bit floating point operations and use 32bit
with cmake enable-floats options
also if you are not using pulse at all, try to disable it completely
>
Philippe
>
On Fri, Nov 15, 2019 at 9:34 AM Marcus Weseloh wrote:
>
Hi Etienne,
>
first please try to find out if Fluidsynth is actually the problem or if there
is something wrong with your audio setup. Maybe try to play a normal wav file
via the alsa device:
>
$ aplay -D hw:1,0 /path/to/a/soundfile.wav
>
For the sound file, use one in the format that you want fluidsynth to output.
So if you want it to render 16bit 441000 audio, then try to play a stereo wav
with 16 bit and 41000 sample rate.
See if simply playing the wav file also results in distorted audio.
>
Cheers
Marcus
>
>
Am Do., 14. Nov. 2019 um 22:17 Uhr schrieb Etienne Besançon :
>
> Hi!
>
> I'm running FluidSynth on a Single Board Computer, a Hardkernel Odroid C1+
> that is actually stacked with a audio board integrating a high-end DAC. The
> aim is to turn this into a MIDI expander. Long story short, that actually
> runs pretty good on my desktop computer but got a very distorted sound on the
> SBC.
>
> The MIDI instrument is well discovered:
> odroid@odroid:~$ lsusb
> Bus 001 Device 005: ID 2341:8037 Arduino SA
>
> Fluidsynth is configured as follow:
> odroid@odroid:~$ fluidsynth -C0 -R0 -r 44100 -v -d -a alsa -o
> audio.alsa.device=hw:1 -o synth.polyphony=64 -m alsa_seq
> /home/odroid/Documents/Bandoneon.sf2
> FluidSynth version 1.1.6
> Copyright (C) 2000-2012 Peter Hanappe and others.
> Distributed under the LGPL license.
> SoundFont(R) is a registered trademark of E-mu Systems, Inc.
>
> fluidsynth: warning: Failed to pin the sample data to RAM; swapping is
> possible.
> fluidsynth: prog 0 0 0
> fluidsynth: prog 1 0 0
> fluidsynth: prog 2 0 0
> fluidsynth: prog 3 0 0
> fluidsynth: prog 4 0 0
> fluidsynth: prog 5 0 0
> fluidsynth: prog 6 0 0
> fluidsynth: prog 7 0 0
> fluidsynth: prog 8 0 0
> fluidsynth: prog 9 128 0
> fluidsynth: warning: No preset found on channel 9 [bank=128 prog=0]
> fluidsynth: prog 10 0 0
> fluidsynth: prog 11 0 0
> fluidsynth: prog 12 0 0
> fluidsynth: prog 13 0 0
> fluidsynth: prog 14 0 0
> fluidsynth: prog 15 0 0
> Type 'help' for help topics.
>
> event_pre_noteon 0 60 106
> event_post_noteon 0 60 106
> fluidsynth: noteon 0 60 106 00000 36.312 3.550 0.000 0
> event_pre_noteoff 0 60 106
> event_post_noteoff 0 60 106
> fluidsynth: noteoff 0 60 0 00000 3.574 1
> event_pre_noteon 0 60 106
> event_post_noteon 0 60 106
> fluidsynth: noteon 0 60 106 00001 39.626 3.876 0.000 0
> event_pre_noteoff 0 60 106
> ^C
>
> The instrument well connected:
> odroid@odroid:~$ aconnect -io
> client 0: 'System' [type=kernel]
> 0 'Timer '
> 1 'Announce '
> client 24: 'Arduino Micro' [type=kernel]
> 0 'Arduino Micro MIDI 1'
> client 128: 'FLUID Synth (3113)' [type=user]
> 0 'Synth input port (3113:0)'
> odroid@odroid:~$ aconnect 24 128
>
> Well, everything looks fine but the sound I get when playing the midi
> instrument is very distorted, noisy. Changing the rate did not improved,
> playing with the buffer a little bit. Weirdly enough, switching output to
> pulse audio ("fluidsynth -a pulseaudio...") gives expected sounds but with a
> 2~3 seconds latency.
>
> Any clue about this? How can I get more details regarding what going on?
>
> Thanks!
> HLB
>
_______________________________________________
> fluid-dev mailing list
> fluid-dev@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/fluid-dev
>
_______________________________________________
> fluid-dev mailing list
> fluid-dev@nongnu.org
> https://lists.nongnu.org/mailman/listinfo/fluid-dev
>
_______________________________________________
fluid-dev mailing list
fluid-dev@nongnu.org
https://lists.nongnu.org/mailman/listinfo/fluid-dev
