A vehicular audio-amplifier controller includes: a delay buffer (8) that stores a sound signal supplied from a signal source (5, 9a to 9c); a first processing unit (3, S103, S4) that applies an absolute value process to the supplied sound signal; a second processing unit (3, S104, S5) that applies a low-pass filter process and an offset process to a processing result of the first processing unit (3, S103, S4); a power supply controller (7, S105, S11) that performs control to change a voltage value of a vehicular power supply (+VB) according to at least a signal value processed by the second processing unit and a type of the signal source (5, 9a to 9c); and a sound signal output unit (3, S13) that outputs a sound signal stored in the delay buffer (8) with only a delay time (Tdelay) that is determined based on a power supply control process time of the power supply controller (7, S105, S11).
VEHICULAR AUDIO-AMPLIFIER CONTROLLER
AUDIOVERSTÄRKERSTEUERUNG FÜR EIN FAHRZEUG
APPAREIL DE COMMANDE D'AMPLIFICATEUR BASSE FRÉQUENCE DE VÉHICULE
2018-10-03
Patent
Electronic Resource
English