end. TECHNICAL FIELD OF THE INVENTION;The present invention relates to an apparatus for processing a mono audio signal and implementing multidimensional spatial sound.;I. The technical problem the invention seeks to solve;Even in the mono mode, the center of a sound source is provided in a stable state, thereby providing a real harmonic sound space realizing apparatus capable of realizing a multi-dimensional sound space that provides a spatial presence in harmony with the actual acoustic space.;All. Summary of solution of design;A phase correction unit for reversing the phase of one of the left and right channel signals constituting the mono-channel two-channel audio signal and performing phase correction by high pass filtering in the audio region, and a phase correction unit among the left and right channel signals. A first audible sound correction unit for correcting a phase and a sound source direction of an audible frequency corresponding to the characteristics of a speaker and an acoustic space with respect to the phase corrected signal, and a signal of another channel not inputted to the phase correction unit among left and right channel signals; The second audible sound correction unit for correcting the phase of the audio frequency and the direction of the sound source corresponding to the characteristics of the speaker and the acoustic space, and attenuate the signals corrected by the first, second audible sound correction unit corresponding to the acoustic space, respectively The first and second volume distribution units for distributing the volume and the signals distributed by the first and second volume distributors so as to correspond to the sound position in the acoustic space. In combination with optionally provided with a first, a second synthesis section for synthesizing the left and right spatial sound signal.;la. Important uses of the devise;It is used to realize a real harmonic space in the mono system.
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