A food waste disposer having devices to reduce noise is disclosed. The
disposer has a food conveying section, a motor section, and a grinding
section. To reduce the emitted noise that may result when food waste
impacts the various components of the grinding section, in one
embodiment, the present invention uses sound reduction layers attached to
the external surfaces of the food conveying section, the motor section,
and/or the central grinding section. The sound reduction layers may be
made of materials that absorb, block, or dampen the emitted noise. The
rotating shredder plate may have a first metallic layer, a second damping
layer, and a third metallic layer. The stationary shredder ring may be
made of a high-mass material or have a high-mass ring in connection with
a stationary shredder ring. These devices may be combined with various
disposer inlet baffles.