PLAYBACK SPEED CONTROLLER WITH AUDIO PITCH COMPENSATION IN DIGITAL AUDIO SYSTEM FOR LANGUAGE STUDY

摘要

Disclosed are a play speed variable device and a caption processing device having a pitch compensation function of a digital audio system for language learning. The digital audio system to which the present invention is applied includes a key input unit for receiving a desired operation from a user, a display unit for notifying a user of a transition state of the input operation, an external interface unit for receiving data, and a playback speed. A main variable control unit for overall control of all the functions, a speed variable unit for giving a pitch, a pitch variable unit for compensating a pitch, an audio output unit for outputting audio information, a microphone input unit for receiving user voice information, and a general control of all the above functions Even if the speed is changed during audio playback, by changing and reconstructing the change in pitch according to the speed change according to the user's needs in digital audio playback or language learning, etc. have.