PLAN B analog blog

Hi.

People have commented to me offlist that they're sometimes not getting
the result they expect from the Splicer - that being smooth
transactions between the two signals when the splice is swept
backwards and forwards.  If the two inputs are phase aligned - like
two different outputs of a single VCO it will be quite smooth,  but if two different VCOs or any misaligned signals are merged - like
samples - then you'll hear the splice. There's a reason for this:

Let's say you're splicing two pure tones --> sine waves from two
different VCOs.  While one may imagine that the splice of the two
would be as pure as the constituent parts, please keep in mind that if
the point of intersection yields a sudden arbitrary jump in energy
level (let's say one input is at 1 volt while the second is at 3 volts
in it's cycle when the splice occurs), that hard edge, resembling the
steep slope of a square wave will effect the purity.  What looks like
a square wave sounds like one, too.  The hard edge created by the
sudden two volt jump from input A to input B,  given it's happening
once a cycle will buzz and some account this to distortion... to the
letter of the law I guess it is...but it's not created by the circuit,
it's simply the nature of the signals being processed through it.

hope this helps,

- P



--- In PLAN_B_analog_blog@yahoogroups.com, brian <koura5578@...> wrote:
>
> Hello,
> 
> I am in the process of whittling down the mass of possibilities in
building a modular set-up and wanted to see if anyone has any reviews
of the wave splicer in the elf series?
> My main concern is how it responds to more complex waveforms. aka
sampled sounds.
> For example, using a sample as one source and then a osc for the other.
> Or maybe someone has spliced two sample-based sounds together?
> 
> Thank you,
> b.labycz
>