What sound is heard from an audio device experiencing RF interference from a single sideband phone transmitter?

When an ordinary consumer audio device intercepts a Single Sideband (SSB) signal, its internal components can inadvertently act as a simple diode detector. This rectifies the RF energy, stripping away the radio frequencies and leaving behind the audio envelope. However, because an SSB signal has had its carrier removed at the transmitter, a proper receiver needs a Beat Frequency Oscillator (BFO) to reinsert that carrier and demodulate the audio cleanly. Since a home stereo or public address system lacks a BFO, the rectified audio sounds heavily distorted, often resembling a quacking or garbled 'Donald Duck' voice.