       );
        assert_not_constant_value(
            audio.slice(0, criticalFrame),
            0,
            `Oscillator output [0:${criticalFrame - 1}] should not ` +
                `be zero before exceeding Nyquist`
        );
        assert_constant_value(
            audio.slice(criticalFrame),
            0,
            `Oscillator output [${criticalFrame}:] should be zero ` +
                `after exceeding Nyquist`
        );
      }, 'Oscillator with detune automation becomes silent above Ny