Abstract: A double talk detector for detecting double talk situations in a device capable of two-way voice communication. The double talk detector comprises means (2, I) for receiving a speech signal (3, 5; 30, 50), and means (82, 83) for dividing the speech signal (30, 50) into subsignals representing specific frequency bands. A detection is performed (84, 85, 86) for each subsignal, and subdecision signals are calculated (87) on the basis of the detection. The subdecision signals indicate existence of double talk in the respective subsignals. A final decision signal is calculated (89, 90, 91) as a double talk decision signal DTD for the speech signal on the basis of the subdecision signals.