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RE: iZotope most 'transparent'?




From your previous posts, I have concluded that you never figured out how to use the iZotope SRC. Without exploring the full range of its conversion settings, it is not possible to reach a valid conclusion as to transparency. Indeed, the nature of the 44.1 kHz PCM format is that conversions to/from this format will not and can not be transparent regardless of software. The controls are there to allow the user to make appropriate tradeoffs according to artistic criteria. If one is upsampling previously downsampled recordings the best settings will depend on the settings used (or converter used) to make the 44 kHz recording as well as the particular type of music and style of recording. If one wants to know the exact technical characteristics of specific settings, there are easily obtained by running the same type of tests that one sees on the infinitewave site. One can run any other kind of test as well, if one is so inclined. I believe all of the plots provided on the web site use software that comes with iZotope RX.

The image at the top of this post is a screen shot of iZotope RX. As you can see from the magnifying glass, the screen image has been blown up by a factor of 2 for the benefit of the visually impaired. (I would assume that any visually challengeduser of Windows would be aware of this built in operating system feature.)

Note that the dB scale on the right hand side is a slider and allows examination of attenuation at lower dB levels. With the offset and steepness settings shown, if one slides the scale down on will see that aliasing begins at 22.05 kHz at a maximum level of -60 dB.


Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar


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