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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: IMD needs to be brought to the fore posted by arend-jan on July 7, 2006 at 14:16:27:
Kinda. Sorta. The kind of IMD that is usually measured derives from the same transfer functions that give rise to harmonics. But an amp will have a different transfer function at one frequency than at another due to reactances varying as a function of frequency. IMD testing gives a chance for the amp to be tested with more than frequency at a time, a bit more like music than a single frequency sine wave. Furthermore, there can be (and is) something called phase intermodulation (think FM versus AM) that is very bad on the ears and cannot be deduced from harmonic distortion results alone.
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Follow Ups
- Re: IMD needs to be brought to the fore - BBeck 15:34:18 07/07/06 (3)
- Re: IMD needs to be brought to the fore - arend-jan 01:39:04 07/08/06 (1)
- Re: IMD needs to be brought to the fore - BBeck 04:34:37 07/08/06 (0)
- I absolutely agree ... - Naz 16:41:25 07/07/06 (0)
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