Also, if you are building from sources... make sure to compile a RELEASE
build :p
On Wed, Nov 20, 2019 at 12:24 AM Etienne Besançon <
besancon.etie...@wanadoo.fr> wrote:
> Dear Jean-Jacques,
>
>
>
> Thank you for your tips.
>
>
>
> I just discovered the settings (-o) and its pretty impressive!
>
>
>
> My issue is actually fixed: the default audio.period-size parameter (64)
> was too low. 128 was still to low, 256 gave a perfect sound! The whole
> synthesizer sounds very reactive, no latency to my ears.
>
>
>
> Just for my own satisfaction, I could not find who is the default
> audio.alsa.device. The help output tells me that it is "default". Aplay
> lists what follows:
>
>
>
> odrodroid@odroid:~$ aplay -L
>
> null
>
> Discard all samples (playback) or generate zero samples (capture)
>
> pulse
>
> PulseAudio Sound Server
>
> sysdefault:CARD=ODROIDHDMI
>
> ODROID-HDMI,
>
> Default Audio Device
>
> dmix:CARD=ODROIDHDMI,DEV=0
>
> ODROID-HDMI,
>
> Direct sample mixing device
>
> dsnoop:CARD=ODROIDHDMI,DEV=0
>
> ODROID-HDMI,
>
> Direct sample snooping device
>
> hw:CARD=ODROIDHDMI,DEV=0
>
> ODROID-HDMI,
>
> Direct hardware device without any conversions
>
> plughw:CARD=ODROIDHDMI,DEV=0
>
> ODROID-HDMI,
>
> Hardware device with all software conversions
>
> sysdefault:CARD=ODROIDDAC
>
> ODROID-DAC,
>
> Default Audio Device
>
> dmix:CARD=ODROIDDAC,DEV=0
>
> ODROID-DAC,
>
> Direct sample mixing device
>
> dsnoop:CARD=ODROIDDAC,DEV=0
>
> ODROID-DAC,
>
> Direct sample snooping device
>
> hw:CARD=ODROIDDAC,DEV=0
>
> ODROID-DAC,
>
> Direct hardware device without any conversions
>
> plughw:CARD=ODROIDDAC,DEV=0
>
> ODROID-DAC,
>
> Hardware device with all software conversions
>
> sysdefault:CARD=Micro
>
> Default Audio Device
>
>
>
> But "-a alsa -o audio.alsa.device=plughw:0" or "hw:0" do not give any kind
> of sound (perfect mute). dmix/dsnoop fail to open.
>
>
>
> Again, thank you all for taking care of this.
>
> HLB
>
>
>
>
> > Message du 19/11/19 19:17
> > De : "Ceresa Jean-Jacques" <jean-jacques.cer...@orange.fr>
> > A : "EtienneBesançon" <besancon.etie...@wanadoo.fr>,
> "FluidSynthmailinglist" <fluid-dev@nongnu.org>
> > Copie à :
> > Objet : Re: [fluid-dev] Distorted Sound with FluidSynth + Alsa on a SBC
> >
> >
>
> > Hi Etienne,
>
> > > odroid@odroid:~$ fluidsynth -C0 -R0 -r 44100 -c2 -v -d -a alsa -m
> alsa_seq /home/odroid/Documents/bandoneon_v2.sf2
>
> > Here some tips. Those result on experimention using Raspberry device.
>
> > 1) Avoiding lost of precious cpu cycles:
>
> > 1.1) Setting reverb and chorus off: Use -C0 -R0.
>
> > 1.1) Never use -v and -d option permanently. Both consume a lot of
> precious cpu cycles.
>
> > 2) Allowing fluidsynth sufficient time to compute things:
>
> > 2.1) Prefer low sample rate: 44100Hz (avoid 96000Hz):
>
> > 2.2)Avoid -c2 option and prefer -o audio.periods=xx , also use -o
> audio.period-size=yy to choose the size of each buffer.
>
> > First use Alsa driver before trying using Alsa hardware device layer.
>
> > Play one note using "noteon" command before trying playing note from
> your MIDI controller.
>
> > The first thing to do is choosing high value for xx and yy.Then when a
> one note sounds fine you could try to diminish xx, yy to
>
> > get lower latency as possible.
>
> >
>
> > Have you solved your issue ?
>
> > What settings did you use when you got a distorded sound ?
>
> > jjc.
>
> >
>
> > Message du 15/11/19 18:57
> > De : "Etienne Besançon" <besancon.etie...@wanadoo.fr>
> > A : fluid-dev@nongnu.org
> > Copie à :
> > Objet : Re: [fluid-dev] Distorted Sound with FluidSynth + Alsa on a SBC
> >
> >
>
> > > 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" <simons.phili...@gmail.com>
> > A : "FluidSynth mailing list" <fluid-dev@nongnu.org>
> > Copie à : "Etienne Besançon" <besancon.etie...@wanadoo.fr>
> > 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 <mar...@weseloh.cc> 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 <
>> besancon.etie...@wanadoo.fr>:
>> >
>>
>>> > > > 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
>> >
>
>
>
>
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