Years ago I was working with a sound editor program called Sony Sound Forge. It had this filter of smooth/enhance which I liked and used a lot, but now I can't find such filter in Adobe Audition or Audacity. Unfortunately that editor is not available on linux and windows version is beyond my budget. So I wonder if:

  • Is that filter available in Audacity but I can't find it? (or perhaps as a plugin)?
  • How, if possible at all, can I define a custom filter that does the same job, either in Audacity or Adobe Audition?

here's a brief quote:

The Enhance function boosts the very highest frequencies (close to the Nyquist frequency) in the sound file, making the sound file sound more vivid. It is useful for compensating for the effects of downsampling or for bringing out very fast transients in a sound file.

But it's not simply a parametric or graphic EQ.

link for more info, just in case.

Thank you.

  • $\begingroup$ I am not familiar with the filter but have you tried to perform a simple frequency analysis (this idea stems from the fact that the filter developers state that all it does is to boost high frequencies) to see the difference "before and after"? If this is indeed such as "simple" filter operation then you could possibly reverse engineer it and implement your own filter. $\endgroup$
    – ZaellixA
    Nov 19, 2022 at 12:53
  • $\begingroup$ Sounds like a "sharpening" filter. $\endgroup$
    – Royi
    Nov 19, 2022 at 14:53
  • $\begingroup$ @ZaellixA unfortunately as told before I no loger can use it. I still have many files that I did perform the filter on them but not the original ones. so cant do any comparison. Plus, all it does isn't boost high frqs, bc I can't replicate that with Eq and even Eq+compressor. If you read the linked page, it also smooth out the glitches. $\endgroup$
    – user174174
    Nov 20, 2022 at 14:43
  • $\begingroup$ @Royi yes, more or less I can relate "sharpening" to that, like sharpen/blur. it either increases the fast transitions amplitude or makes them faster (in enhance side) but don't know how, and on the smooth side it reduces them by amplitude and/or modifying the samples around sudden big jump values (like 1st sample -x next one +y) that will be heard as a click sound. $\endgroup$
    – user174174
    Nov 20, 2022 at 15:02
  • $\begingroup$ @Royi I guess (but not sure) that applying the smooth on a square , sawtooth, or triangle waveform will eventually be sine. but on enhance side have no idea what will really happen. $\endgroup$
    – user174174
    Nov 20, 2022 at 15:12


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