XP1 Easter Eggs: for the sfz inclined

flex some muscle and show that sfz ain't just about which note goes where.

On my experiments I get solid changes in the sound if I specify it but I'm thinking the wave file is acting on itself? I want to act on other sounds. Like a true impulse response with say acoustic mirror.

Waveguide Synthesis
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A waveguide is a bidirectional delay line, at some wave impedance. In easy terms, you can think of it as a complex resonator, where if you make some initial short or burst noise, the resonator will continue 'vibrating' for a while, with a natural decay. This synthesis method has been introduced in the early nineties as a fresh way to synthesize plucked attacks and plucked strings. A waveguide is the most common component used in Physical Modelling.

In this method, we give Dimension a sample to provide the initial noise burst, or 'impulse'. This impulse has nothing to do with room/hall impulse responses used in convolution processors, but using those as bursts result in interesting sounds. This is the sfz syntax to turn an element into a waveguide:

<region> sample=MySample.wav waveguide=on

Beware of the length of the impulse you use: it might end in DC, with no sound produced. This is a normal consequence on waveguide synthesis. If you're up to investigate, just take a look at the stock impulses in '20 - Waveguide'. If you're after a sample of how waveguides can sound, check the 'PM Clav' patch, a physical modelled Wonder-like clav sound.

Hope this brings some light.

-René

To make a waveguide, just cut a small wave file (to be used as the impulse), and then make an sfz file as follows:

<group>
sample=impulse 4.wav
waveguide=on


That will instruct Dimension to treat 'impulse 4.wav' as the burst to drop into the waveguide. You can take a look at the sfz and wave files in the \Multisamples\20 - Waveguide folder as reference. ... It doesn't need to be 32-bit anymore (as in the z3ta+ early implementation). It can be 8 to 64 bit, mono or stereo, any samplerate ...

-René

weird character substitution and no breaks in WinXP/Notepad

No kidding. With all that was there to explore, I was drawn to the Twisted Waveguides like a moth to an open flame.