Feedback-based bass compensation control system of speaker system

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a signal-feedback bass compensation control apparatus for a speaker system, which detects a reproduced sound current caused by an upward / downward movement of a voice coil spring of a speaker system and generates a bass-.;The voice coil 31 is connected to the voice coil 31 through a voice coil 31 and a plate 14 which receives a voice current from the main amplifier 70 through a lead wire 36 and generates a rotating magnetic field, A magnet 12 for applying a magnetic flux and a playback voice generating means 40 provided with a voice coil spring 32 to which the voice coil 31 is attached so as to move up and down by a vibration force generated by the rotary encoder In a coaxial speaker system, A signal detection means (50) for detecting a signal current in accordance with the reproduced voice due to the ascending and descending motion of the voice coil bin bin (32), and a signal amplifying means (50) for amplifying a signal current according to the reproduced voice detected by the signal detecting means Means 60 for adding a signal current corresponding to the reproduced sound signal amplified by the signal amplifying means 60 to the audio current applied to the main amplifier 70, Further comprising subtracting means (66) for subtracting the added signal current added and calculated from the applied speech current through the adding means (64); The main amplifier 70 receives a voice current having a compensation value for harmonic distortion as a result of subtraction and calculation by the subtracting means 66, amplifies the electric power, and outputs it to the reproduction sound generating means 40 .