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Legal SoundClasses
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nosnd		  silence

bb                broadband noise

tone=hz           pure tone of nnn hz

bp=lo-hi          band pass noise from f1-f2

cf=hz,bw=hz       bandpass from cf-(bw/2) to cf+(bw/2)

stack=hz-range    pure tone list ("tone stack")

fmsweep=from-to:n FM sweep in hz
     fm=from-to:n

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Specifying a range (e.g. stack=range)
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    low:high:stepsize
    low:high:/nsteps        (note: 1000:2000:/2 gives a stack of 1k+2k)



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Legal SoundClasses
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nosnd
bb
hp  (4-13k)
tone=hz
bp=lo-hi
cf=hz,bw=hz
stack=f1,f2,f3..fN
stack=fmin:fmax:fstep
stack=fmin:fmax:/fnsteps
fm=from-to
fm=from-to:nsweeps
