Nice find Laurence! I have never heard of them. Thanks for sharing. Now, if we can get a plugin to get rid of wind noise... :)

j razz

" Now, if we can get a plugin to get rid of wind noise.."
- There are.. but YMMV depending on the severity. (same with the de-verb)
1. 'High-pass filter'.
2. Spectral editing (iZotope RX, SCS Spectral Layers

Can't wait to try it! You'd think something similar would be a standard in Audition or the like.

Removing reverberation from recorded audio is one of the last "holy grails" in digital audio signal processing, it's not easy, and you'll pay a price for any software that comes near to doing it well (e.g. Unveil). On the other hand, one of easiest cases to deal with is a recording of a single voice in a reverberant environment, typical of interview situations. Much can be done with gates and compressors, of which there are countless free VST plugin examples, but the most effective in this situation are so-called transient designers, or shapers. There are some free ones.

"Now, if we can get a plugin to get rid of wind noise.."

In my experience, loud wind noise is virtually impossible to remove.

1. My camera has AGC, so that high wind noise turns the gain down to an unknown amount, as a function of time. Assuming that the noise could be removed completely, the gain would have to be restored as well. High noise means a faint signal and very few bits might be left to encode the signal.

2. The noise can be so loud and abrupt that the AGC doesn't operate smoothly. Clipping or distortion of some sort occurs, resulting in a very unpleasant bursty sound. Once distortion and hence inter-modulation occurs, then you are faced with unbaking a cake (blind deconvolution).

>Removing reverberation from recorded audio is one of the last "holy grails" in digital audio signal processing, it's not easy, and you'll pay a price for any software that comes near to doing it well (e.g. Unveil). On the other hand, one of easiest cases to deal with is a recording of a single voice in a reverberant environment, typical of interview situations. Much can be done with gates and compressors, of which there are countless free VST plugin examples, but the most effective in this situation are so-called transient designers, or shapers. There are some free ones.

I can tell you haven't actually tried the Acon plugin. In fact in this particular instance I tried various types of downward expanding and it wasn't anywhere near good enough. The Acon plugin nailed it right off the bat.

I haven't tried it on music or other voices, and I still haven't gone beyond just using the demo this one time (it alloted enough seconds before the demo gaps kicked in for me to get what I needed). All I can say is that I really needed it to work, and it came through for me perfectly.

Just tested and reviewed DeVerberate on several tricky audio projects. It really works a treat. Here's my video review for Australian videocamera.

www.youtube.com/watch?v=7VtNvnaQw-U

This plugin lets you recover earlier audio that had been recorded under less than ideal conditions, and also lets you tackle new projects in concert halls, churches etc with great confidence. Great value for $99.

Cheers
David