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| Koen Tanghe @ Smartelectronix |
| KTAudioHealer |
| Description |
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KTAudioHealer is a simple plugin that makes the incoming audio
healthier by applying DC / LF blocking, Nyquist / HF blocking and undenormalization.
It is totally unoptimized and has no custom GUI...
DC / LF blocking
One rather experimental thing you can do with digital audio, is opening a non-audio file
as an audio file pretending that the bits in that file represent audio samples. Starting from
there, you can try to make some original sounds out of these raw bits by applying all kinds
of sound transformations / effects on them.
Now, normal audio data samples are more or less centered around a zero line: the sum of all
samples is on average always zero. But for the "artificial sound sources" mentioned above, this
might not be the case, as the original data is not really audio. The non-zero sum of all samples
is called the DC offset.
KTAudioHealer removes this DC offset and all other very low frequencies according to a cutoff
frequency you specify. This makes sure that full headroom is maintained and that the sound will
be healthier for your sound equipment.
Nyquist / HF blocking
At the other end of the spectrum, very high frequencies around half of the sample frequency
(which is called the Nyquist frequency), can also cause problems.
KTAudioHealer removes frequencies near Nyquist according to a cutoff frequency you specify.
Undenormalization
Extremely small audio sample values may cause the processor of your computer to enter a special
mode in which it will operate slower than in normal conditions, and this manifests itself in very high
CPU usage, which is something you obviously don't want, especially for samples you can't even hear...
KTAudioHealer makes sure that, no matter what samples come in, the samples that come out will
not be in such a denormalized state.
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| Download |
| File |
Description |
Size |
Date |
| KTAudioHealer1.0_VST_win32.zip |
Version 1.0
Windows, VST, dll |
81 KB |
20040420 |
| KTAudioHealer1.0.1_AU.dmg |
Version 1.0.1 *
MacOSX, AU, PPC + Intel |
174 KB |
20050902 |
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Latest changes
The 1.0.1 AU version has a small bug fix that makes the plugin pass the latest versions of AUValidation and is now
also built as a "universal binary", so it will run natively on PPC-based Macs and Intel-based Macs.
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