A dynamic step noise UGen. Like LFNoise0 , it generates abruptly changing
random values between -1 and +1 at a rate given by the freq argument, with
two differences: There is no time quantization, and it there is fast recovery
from low freq values.
In contrast, LFNoise0 , LFNoise1 , and LFNoise2 quantize to the nearest
integer division of the sample rate, and they poll the freq argument only when
scheduled, and thus seem to hang when the frequencies get very low.
If very high or very low frequencies are not needed, or fixed frequencies are
used, LFNoise0 is more efficient.
rate at which to generate random values.