| 摘要 |
PROBLEM TO BE SOLVED: To provide a FM sound conversion speaker-amplifier unit device that allows a FM sound to be more naturally transmitted to the ear by adding fundamental vibration and acceleration to a vibration plate, unlike a conventional device which cannot reproduce a FM sound, a natural compressional wave, through a speaker.SOLUTION: The FM sound conversion speaker-amplifier unit device performs control so that a memory is written and called with a clock pulse oscillation circuit, a counter and a DAC by input relay via digital processing and amplification means; addresses to a ROM in which a level difference is recorded by a first operation circuit and variables with time are recorded by a T-expansion circuit; and adds a numerical value of acceleration, inputted to a second operation circuit through an encode circuit and then outputted after being operated, to a sub moving coil having an electric signal of FM deviation provided on upper and lower positions of a main moving coil, by a third operation circuit.SELECTED DRAWING: Figure 1 |
