Hi, I have done a track wich requires heavy oversampling when rendered (synced oscillators in the lead voice). That is the alias is strongly audiable when just playing the song (even with HQ-setting on). But if I try to oversample it by what ever means I just get a completely chunky and "non-fluent" rendering. (I have tried to oversample it by increasing the samplerate up to 192kHz and downsampling in Audacity. I have tried to oversample it using it's internal oversampling-routines (up to 8 times, simple-sinc up to best sinc, with and without "alias-free"-oscillators, with and without sample-exact controllers (which I heavily use for the lead voice...)). It all doesn't help. It all leads to garbaged output...
I am sorry, that I can't describe it any better... but I can provide test-renderings of the lead-voice alone (as well as an mmpz), so you can test it yourself. A try of a better description: It sounds like the controllers are completly decoupled from the master-clock and only updated every now and then... As far as my understanding goes: The controllers (as any internal oscillator) should derive their time-base from the main-output sample-clock _ever_. So "sample-exact" controllers is a rather useless feature from my point of view... And despite that the sound should lack more and more alias-terms it should sound _exactly_ the same if rendered on 16 kHz, 44.1 kHz or 1.536 MHz (=192k*8) ... Another remark: I can't think of any method other than massive oversampling to get wave-table-oscillators alias-free on a given sampling-rate. So, what exactly is the "alias-free" oscillators-flag doing? Building up a n*m subsampled wavetable with various preapplied filters? Just upsampling, filter, downsampling? But whatever it does, there is something going nut's, too... Version here is a self-compiled git-checkout: 0.4.90 Does anyone want to have the mmpz-file and or the rendered output? This is a real showstopper-bug I think... cu Stefan ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ LMMS-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/lmms-devel
