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Re: [fluid-dev] Re: [LAU] fluidsynth-dssi with dssi 1.1.0 distorted/garb

From: David Henningsson
Subject: Re: [fluid-dev] Re: [LAU] fluidsynth-dssi with dssi 1.1.0 distorted/garbled audio output
Date: Thu, 30 Sep 2010 08:15:31 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20100922 Thunderbird/3.1.4

On 2010-09-27 14:21, Pedro Lopez-Cabanillas wrote:
On Monday 27 September 2010, Sean Bolton wrote:
On Sep 26, 2010, at 5:43 AM, Frank Kober wrote:
has someone already tested fluidsynth-dssi since dssi was updated
to 1.1.0 ?

I'm getting strongly distorted audio when using fluidsynth-dssi in
any host (tested with ghostess and qtractor) and suspect this to be
related to that dssi update until proven wrong. Strangely, all
other dssi plugins including the updated ones from some days ago
work like a charm, as does fluidsynth played via qsynth.

I haven't been able to reproduce the problem. I'm using ghostess
20100923 compiled against DSSI 1.1.0, and both a pre-DSSI-update
fluidsynth-dssi.so (using DSSI 1.0.0 and fluidsynth 1.0.8) and post-
DSSI-update fluidsynth-dssi.so (using DSSI 1.1.0 and fluidsynth
1.1.2) seem to work fine.

I was wondering if I'm the only one with that problem?

Since you're not the only one, let's see what you have in common.
Versions? Distros? Did you  compile fluidsynth-dssi after the DSSI
upgrade, or are you using a pre-DSSI-upgrade version?

I can confirm the reports by Frank and Orcan, using FS 1.1.2 with any DSSI
version. The problem doesn't happen here with FS 1.1.1

I suspect this issue may be like a problem with audio-channels>= 2 in
FluidSynth-1.1.2, ticket #87:

If both problems have indeed the same root cause, looks like the issue is
related to fluid_synth_nwrite_float() versus fluid_synth_write_float().

Thanks for fixing it, although I assume you need a similar ifdef in the lower loop (see r373). As a side note, do you know how to get notifications when a new ticket is added?

// David

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