Non-directional 3-D MIDI stereo sound using spatial motion technique and its control method

摘要

In the system using a MIDI sound generator, it is possible to form an algorithm as a control method of MPS (Midi Parametric Spatialization) sound capable of satisfying all elements of a space movement technique for realizing a perfect stereophonic sound, Directional MIDI stereo sound system. Conventional stereo reinforcement techniques, matrix method techniques, and multi-channel audio techniques have realized two-dimensional or three-dimensional stereo sound. However, sufficient consideration has been given to the necessary elements for implementing stereo sound, It was difficult to apply and control the correlation, and to build an effective system. The present invention relates to real time panning parameters for distributing sound to the front and rear speakers and for emphasizing a specific sound source to the left or right area and Doppler based on Head Related Transfer Functions (HRTE) and IID (Intensity Panning) Doppler) effect by real-time control of volume level parameters, thereby providing a spatial movement technique stereo sound system capable of realizing omnidirectional three-dimensional stereo sound in a system using a MIDI sound generator.