Abstract: The invention provides a speech therapy system, comprising a first channel including a microphone, and a first analog-to-digital (A/D) transducer for transducing voice signals from the microphone into digital form, a second channel including at least one respiration sensor attachable to a user's body for detecting breathing motion, and a second A/D transducer connected to the sensor for transducing breathing motion signals into digital form. The system further includes a processing, video display and voice output unit, to which the first and second channels are connected, for the simultaneous display of voice and breathing motion patterns while effecting the sounding of the voice signals.