Private Biquad Filters for each Deck Component about treactr

[kevin-chau]

This one is embarrassingly easy:

      // Create a Biquad Filters
      this.biquadFilterLow = audioCtx.createBiquadFilter();
      this.biquadFilterLow.type = 'lowshelf';
      this.biquadFilterLow.frequency.value = 250;
      this.biquadFilterMid = audioCtx.createBiquadFilter();
      this.biquadFilterMid.type = 'peaking';
      this.biquadFilterMid.Q.value = 1.0;
      this.biquadFilterMid.frequency.value = 1100;
      this.biquadFilterHigh = audioCtx.createBiquadFilter();
      this.biquadFilterHigh.type = 'highshelf';
      this.biquadFilterHigh.frequency.value = 2000;