Hi, I have to say this is annoying. I thought one of the tenets of Csound was backward compatibility... In my RotorOrgan, I generate a "Spring Reverb" with a convoluttion from an impulse file. This is raw 32-bit float samples at 24000Hz (same as the csd's sample rate) It worked fine from Csound5 up to 6.04. I just upgraded my Linux to 6.12, and it fails! I load the file with an ftgen, using GEN01: impulse ftgen 0, 0, 0, 1, "spring_reverb24.raw", 0, 6, 0 with the '6' representing 32-bit float. In 6.12 I suddenly get: soundin cannot open spring_reverb24.raw: File contains data in an unknown format. ftable 102: Failed to open file spring_reverb24.raw f102 0.00 0.00 1.00 "spring_reverb24.raw" ... INIT ERROR in instr 10 line 871: ftgen error from file hammond.csd (1) impulse ftgen.iS 0 0 0 1 "spring_reverb24.raw" 06 0 Huh? I went to the 6.12 manual and see under GEN01: format -- if positive it is ignored, but if negative specifies the audio format of a raw file. -1 - 8-bit signed character -2 - 8-bit A-law bytes -3 - 8-bit U-law bytes -4 - 16-bit short integers -5 - 32-bit long integers -6 - 32-bit floats -7 - 8-bit unsigned character -8 - 24-bit integers -9 - 64-bit doubles *Negative*!! WHY? Anyway, I changed it to '-6'. So now I get: ftable 102: invalid sample format: -6 f102 0.00 0.00 1.00 "spring_reverb24.raw" ... INIT ERROR in instr 10 line 871: ftgen error from file hammond.csd (1) impulse ftgen.iS 0 0 0 1 "spring_reverb24.raw" 0-6 0 So now I have no idea... (And looking at the report, the 'skip' parameter before the format seems to haver disappeared!) -- Pete -- Csound mailing list Csound@listserv.heanet.ie https://listserv.heanet.ie/cgi-bin/wa?A0=CSOUND Send bugs reports to https://github.com/csound/csound/issues Discussions of bugs and features can be posted here