An electronic sound monitor for use as a stethoscope, a signal treatment and a method for treating the signals using the monitor. The sound monitor comprises at least one transducer for transforming vibrations to electric signals (217 701, 702), filtering means (705), A/D- and D/A-converter means (707,715) amplification means (703,704,706,716), processing means (708), a sound chamber (215) in which at least one transducer for transforming electric signals to sound (214) is arranged, and a sound channel (212) opening into said sound chamber, said sound channel adapted to forward the sound from the sound chamber (214) through an opening (218) connecting the sound channel with the ambient air.
