sc = new OscillatorNode(context, {
          frequency: oscFrequency,
          detune: detuneValue
        });
        testOsc.connect(merger, 0, 1);
        const computedFrequency
            = oscFrequency * Math.pow(2, detuneValue / 1200);
        const refOsc = new OscillatorNode(context, {
          frequency: computedFrequency
        });
        refOsc.connect(merger, 0, 0);
        testOsc.start();
        refOsc.start();
        const renderedBuffer = await context.startRendering();
        const