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In Reply to: "The peaks are higher" Could you explain that? posted by Bersani on October 30, 2006 at 18:09:22:
The algorithms that interpolate between the actual sample points will often go higher and lower voltage than the actual sample points because of the "trajectory" of the waveform. For instance if there are two sample points at the peak of a transient (such as an impulse) on either side of the the maxima and they are both the same voltage, it is unlikely that the "missing" sample points would be at the same voltage. This would create a "clipped" or squared-off waveform, which is quite distorted and unnatural and would contain a lot of ultrasonic harmonics. The correct added sample points would be higher in voltage between two identical voltage points at the top of a transient "impulse" in order to "smooth-out" the top of the impulse and bring it down below ultrasonics in spectra.
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Follow Ups
- Re: "The peaks are higher" Could you explain that? - audioengr 19:33:35 10/30/06 (2)
- Re: "The peaks are higher" Could you explain that? - Bersani 23:54:07 10/30/06 (1)
- Re: "The peaks are higher" Could you explain that? - audioengr 09:54:33 10/31/06 (0)
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