[sdiy] Sampler mode...
seb at burnit.co.uk
Tue Nov 18 13:50:04 CET 2008
Andre Majorel wrote:
> Do you plan to quantise the start/end points to the nearest zero
> crossing ?
Well, I'm not sure. I'm going to have to experiment and see what works
in practice. Certainly I will have to do either this, or provide a
short fade in/out. Quantisation may not be a bad thing as it will
reduce the effect of CV jitter caused by noisy ADC sampling.
> Is looping meant to always loop from end point to start point ?
> Eight points might be a little much but three points would come in
> handy. I can see three switches :
> - LOOP : whether to loop after END
> - USE MID : point to return to after END (MID if true, START otherwise)
> - PING-PONG : if true, returning means playing the same range backward
> and negated.
Well yes, it does sound useful to be able to set the loop start
independently from the playback start.
I could add a CV for loop start point .. giving 3 position CVs:
- Playback start
- Playback end = loop end
- Loop start
If playback start > loop start then ignore loop start. Thus by setting
the loop start to the minimum, the playback and loop start points can be
controlled with a single CV.
Ping-pong might be interesting ... and sometimes it helps to loop
samples that would otherwise be very glitchy. To avoid clicks it would
have to be have to be aligned to zero-crossings as well as inverted
polarity while reversing.
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