lt, which should be near
                // zero.
                let expected = result.getChannelData(0);
                let actual = result.getChannelData(1);

                // On MacOSX, WebAudio uses an optimized Biquad implementation
                // that is different from the implementation used for Linux and
                // Windows.  This will cause the output to differ, even if the
                // threshold passes.  Thus, only print out a very small number
                // of elements o