Data Interpolation and Its Effects on Digital Sound Quality - McMurry ...

More documents

Recommendations

Info

25However, in the very high harmonics where the wave is oscillating veryquickly, either version of this interpolation method wasn’t quite enough to fullycapture that harmonic (one would have to have a very high sampling rate, whichwould result in less compression <strong>and</strong> would essentially defeat the purpose ofdigital sound). However, the claim is these aren’t audible to the human ear.Whether it is or not, it just can’t capture it. On the following page is an imagedemonstrating that (dark line is sound, light is interpolant).
263.4 ConclusionUnfortunately, given our limited knowledge about the sound files inquestion, we cannot devise a perfect method for performing an accurateinterpolation. The second method of Cubic Spline interpolation provided decentresults, though still fails to capture in full the very high harmonics that are lost.The other methods discussed all resulted in the sound quality beingcompromised further. Knowledge of the original sound file would have to beavailable for devising the best way of performing interpolation, if that’s evenpossible at all. This would be a topic for further research.
Page 1: Data Inter
Page 6 and 7: 5aren’t close enough to capture t
Page 8 and 9: 7audio conversion. Second, it has t
Page 10 and 11: Chapter 2: Data <s
Page 12 and 13: 11It’s obvious from Figure 2.1.2
Page 14 and 15: 131 1 1L x x x x x x x28 3 212-.321
Page 16 and 17: 152.3.1 Example Suppose we want to
Page 18 and 19: 172.3.3 Example Let’s return to t
Page 20 and 21: 19put in perspective that it’s so
Page 22 and 23: 213.2 Lagrange ResultsFor our examp
Page 24 and 25: 23section, no sound wave is exactly
Page 28 and 29: 27AppendicesAppendix A: Program Hea
Page 30 and 31: 29namespace Maths{namespace <strong
Page 32 and 33: 31namespace Interpolation</
Page 34 and 35: 33double dx = x - m_x[1];return m_y

Data Interpolation and Its Effects on Digital Sound Quality - McMurry ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?