controller-v2/client/src/old/Coeff.js

class Coeff{
    constructor() {
        this.b0 = 0;
        this.b1 = 0;
        this.b2 = 0;
        this.a0 = 0;
        this.a1 = 0;
        this.a2 = 0;
    }

    setB0(value){
        this.b0 = value;
    }

    setB1(value){
        this.b1 = value;
    }

    setB2(value){
        this.b2 = value;
    }

    setA0(value){
        this.a0 = value;
    }

    setA1(value){
        this.a1 = value;
    }

    setA2(value){
        this.a2 = value;
    }

    getSectionsMatrix(gain, fc, bw, type, bypass, fs){
        const w = 2 * fc / fs;
        const q = fc / bw;
        const bypassStatus = bypass ? 1 : 0;
        const bqtype = type + bypassStatus * 10;
        const sA = Math.pow(10, gain / 40);
        const sqrt_sA = Math.sqrt(sA);
        const sin_w = Math.sin(Math.PI * w);
        const cos_w = Math.cos(Math.PI * w);
        const alpha = sin_w / (2 * q);

        let b0, b1, b2, a0, a1, a2;
    }
}