Jim Thompson wrote:
In a typical piezo (noise maker) transducer, will a series R knock
down the amplitude?

...Jim Thompson

Yes. But you may not get the attenuation range you need. (I'm
assuming by "noise maker" you are referring to the kind that have
the oscillator built in, not the kind that are driven by an
external oscillator.) The series R limits the current which
reduces the volume, but it also might stop the internal circuitry
from oscillating due to Vdrop. If you mean the other type where the
oscillator is external, you can shunt attenuate with a parallel cap,
or use a capacitor divider.

Ed