Package: csound Version: 1:6.03.2~dfsg-1 Severity: normal The following CSD produces unexpected output: this may be a problem with Csound, or STK, or both -- I'm filing this as a Csound bug because that's the application I'm using when I experience the problem.
The CSD has two descending tone sequences played with the STKSitar opcode. The duration of each note is 0.4 seconds and they are played 0.1 seconds apart, so there should be no more than 4 notes playing simultaneously. Towards the end of the first descending sequence, the volume shoots up dramatically, creating a great deal of distortion. There is a pause of 1.0 seconds before the second descending sequence, which should be adequate for all notes from the first sequence to complete. Yet when the second sequence plays, the distortion occurs almost immediately, on notes which played without issue during the first tone sequence. It appears that some sort of buffer is building up and not being flushed adequately, but that's just speculation. <CsoundSynthesizer> <CsInstruments> sr=48000 ksmps=1 nchnls=2 0dbfs=1 instr 1 ;STKSitar iAmpl = 0.2 iFreq = p4 aOut STKSitar iFreq, iAmpl outs aOut, aOut endin </CsInstruments> <CsScore> i1 0.0 0.4 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 i1 ^+1.0 . 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 i1 ^+1.0 . 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 e </CsScore> </CsoundSynthesizer> -- System Information: Debian Release: jessie/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.14-2-amd64 (SMP w/8 CPU cores) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages csound depends on: ii libc6 2.19-9 ii libcsound64-6.0 1:6.03.2~dfsg-1 ii libgcc1 1:4.9.1-8 ii libgomp1 4.9.1-8 ii libstdc++6 4.9.1-8 Versions of packages csound recommends: ii csound-utils 1:6.03.2~dfsg-1 csound suggests no packages. -- no debconf information
<CsoundSynthesizer> <CsInstruments> sr=48000 ksmps=1 nchnls=2 0dbfs=1 instr 1 ;STKSitar iAmpl = 0.2 iFreq = p4 aOut STKSitar iFreq, iAmpl outs aOut, aOut endin </CsInstruments> <CsScore> i1 0.0 0.4 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 i1 ^+1.0 . 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 i1 ^+1.0 . 1024.0 i1 ^+0.1 . 960.0 i1 ^+0.1 . 896.0 i1 ^+0.1 . 853.3333 i1 ^+0.1 . 768.0 i1 ^+0.1 . 731.4286 i1 ^+0.1 . 716.8 i1 ^+0.1 . 682.6667 i1 ^+0.1 . 640.0 i1 ^+0.1 . 597.3333 i1 ^+0.1 . 512.0 i1 ^+0.1 . 480.0 i1 ^+0.1 . 448.0 i1 ^+0.1 . 426.66666 i1 ^+0.1 . 384.0 i1 ^+0.1 . 365.7143 i1 ^+0.1 . 358.4 i1 ^+0.1 . 341.33334 i1 ^+0.1 . 320.0 i1 ^+0.1 . 298.66666 i1 ^+0.1 . 256.0 i1 ^+0.1 . 240.0 i1 ^+0.1 . 224.0 i1 ^+0.1 . 213.33333 i1 ^+0.1 . 192.0 i1 ^+0.1 . 182.85715 i1 ^+0.1 . 179.2 i1 ^+0.1 . 170.66667 i1 ^+0.1 . 160.0 i1 ^+0.1 . 149.33333 i1 ^+0.1 . 128.0 i1 ^+0.1 . 120.0 i1 ^+0.1 . 112.0 i1 ^+0.1 . 106.666664 i1 ^+0.1 . 96.0 i1 ^+0.1 . 91.42857 i1 ^+0.1 . 89.6 i1 ^+0.1 . 85.333336 i1 ^+0.1 . 80.0 i1 ^+0.1 . 74.666664 i1 ^+0.1 . 64.0 e </CsScore> </CsoundSynthesizer>
