Abrupt tone onset and offset generate broadband transient energy at distant frequencies.

Evidence

The short click at the beginning and at the end of the time function stems from the broadband transient which produces energy in the 4-kHz range at the moment of switching on or off the I-kHz tone burst. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 216

Categorization

• XREF: Explains a spectral-splatter phenomenon behind click-evoked masking and onset transients.