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[Csnd] FluidSynth on the Raspberry Pi

Date2013-12-19 22:22
Fromzappfinger
Subject[Csnd] FluidSynth on the Raspberry Pi
I was very curious how the FluidSynth opcodes would behave on the RPi, so I
did some tests.
I used a simple csd and various sound fonts.
003.3mg GS Roland Sound Set 16 bit Bank.SF2 (3.5 Mb) played quite well. 

With buffer settings -B2048 -b1024 latency was none existent.
I could play fast and used chords with 5 or more notes. 
Obviously, larger sound fonts (>10 Mb) had trouble playing with big chords.

FluidR3 GM2-2.SF2 (148.3 Mb) was the largest (and very nice) sound font I
used. BTW, all this via the normal audio out, so low quality sound. Playing
only a few notes or 3 note chords sounded ok. Larger chords soon turned into
distortion, because the Pi could not cope with it.

Are there other csound settings besides the buffer sizes to tune and
possibly improve this?
 

Richard




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Date2013-12-19 22:33
FromVictor Lazzarini
SubjectRe: [Csnd] FluidSynth on the Raspberry Pi
you can try increasing ksmps, and if you have soundfonts at lower sampling rates (32K, 22.05k), running
at lower srs. 

Victor

On 19 Dec 2013, at 22:22, zappfinger wrote:

> I was very curious how the FluidSynth opcodes would behave on the RPi, so I
> did some tests.
> I used a simple csd and various sound fonts.
> 003.3mg GS Roland Sound Set 16 bit Bank.SF2 (3.5 Mb) played quite well. 
> 
> With buffer settings -B2048 -b1024 latency was none existent.
> I could play fast and used chords with 5 or more notes. 
> Obviously, larger sound fonts (>10 Mb) had trouble playing with big chords.
> 
> FluidR3 GM2-2.SF2 (148.3 Mb) was the largest (and very nice) sound font I
> used. BTW, all this via the normal audio out, so low quality sound. Playing
> only a few notes or 3 note chords sounded ok. Larger chords soon turned into
> distortion, because the Pi could not cope with it.
> 
> Are there other csound settings besides the buffer sizes to tune and
> possibly improve this?
> 
> 
> Richard
> 
> 
> 
> 
> --
> View this message in context: http://csound.1045644.n5.nabble.com/FluidSynth-on-the-Raspberry-Pi-tp5730883.html
> Sent from the Csound - General mailing list archive at Nabble.com.
> 
> 
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> 

Dr Victor Lazzarini
Senior Lecturer
Dept. of Music
NUI Maynooth Ireland
tel.: +353 1 708 3545
Victor dot Lazzarini AT nuim dot ie