nst source = new ConstantSourceNode(context);
          const commonOpts = {
            distanceModel: 'inverse',
            coneOuterAngle: 360,
            coneInnerAngle: 0,
            positionX: 1,
            positionY: 1,
            positionZ: 1,
            orientationX: 0,
            orientationY: 1,
            orientationZ: 1,
          };

          const kRatePanner = new PannerNode(context, commonOpts);
          const aRatePanner = new PannerNode(context, commonOpts);

          // Switch