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From: | Element Green |
Subject: | Re: [fluid-dev] Crackling sound when more than 4 notes are played simultaneously |
Date: | Thu, 20 Aug 2015 18:10:32 -0600 |
I am using an ARM board with Ubuntu Linaro 13.04 and Alsa as the sound and MIDI driver. I have a SF with 13 different instruments and playing through USB MIDI. As the Fluidsynth starts I use CC 0 7 0.... command to reduce the volume of all the MIDI channels to zero. When a key is pressed the MIDI sends Note ON command to all 16 MIDI channels. I switch ON/OFF instruments by setting the MIDI channel volume 0 or 127 again by using cc command again.My issue is when I start FS, I get the following warnings,fluidsynth warning: Requested a period size of 64, got 1024 insteadfluidsynth warning: Requested 16 periods, got 8 insteadWhen I play 4 notes(up to 4 notes) simultaneously it plays perfectly but when I press the 5th key (or more) there is a crackling sound like a buffer underrun and when I release one note (4 again) it plays perfectly again.I tried using -c and -z to change the period size but cannot reduce the period size less than 1024 and cannot increase number of periods to more than 8.Any suggestion how this can be fixed?RegardsHerschel
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