ACOUSTIC SYSTEM FILTER Russian patent published in 2023 - IPC H04R3/12 

FIELD: acoustics.

SUBSTANCE: invention relates to acoustics. The filter for the acoustic system contains a low-pass filter, a high-pass filter and a mid-pass filter, the outputs of which are designed to connect respectively the dynamic heads of the low-frequency, high-frequency and mid-frequency ranges, characterized in that the low-pass filter consists of the first and second inductors, the high-pass filter consists of the first and second capacitors, and the mid-pass filter consists of the third and fourth capacitors, while the leads of the low-frequency dynamic head are connected: the first lead to the second lead of the first inductor, and the second lead to the first lead of the second inductor, the first lead of the first inductor is connected to the first terminal of the first capacitor, the first terminal of the third capacitor and to the "plus" at the input to the filter, the first terminal of the dynamic head of the high-frequency range is connected to the second terminal of the second capacitor, the first terminal of which is connected to the second in the output of the first capacitor, and the second output of the dynamic head of the high-frequency range is connected to the second output of the fourth capacitor, the second output of the second inductor and to the “minus” at the input to the filter, while the first output of the dynamic head of the mid-frequency range is connected to the second output of the third capacitor and the second output of the dynamic head of the midrange is connected to the first terminal of the fourth capacitor, and the value of the inductance of the first inductor is equal to the value of the inductance of the second inductor, the capacitance of the first capacitor is equal to the capacitance of the second capacitor, and the capacitance of the third capacitor is equal to the capacitance of the fourth capacitor.

EFFECT: increasing the linearity of the phase-frequency characteristic of the filter while maintaining the uniformity of its amplitude-frequency characteristic.

2 cl, 1 dwg