FPGA-BASED SOUND FIELD MODULATION METHOD FOR MIDI MUSIC PRODUCTION

Current sound field modulation methods mainly start from a single parameter of the music and achieve sound field modulation by changing the parameter values. This modulation method makes no obvious sound pressure difference within the sound field, which leads to poor musical directivity. With respect to the above problem, the FPGA-based sound field modulation method for MIDI music production is studied. After designing the FPGA-based sound field modulator, the MIDI music is pre-processed in the top module of the modulator, and the musical features and the main melodic contour of the music are extracted. According to FM modulation theory, the sound field modulation of MIDI music is implemented. The comparison experimental results show that the measured sound pressure of the modulated music by the studied method is consistent with the simulated value, and the frequency is above 2.5 KHz with good pointing effect.