Adobe Audition: Remove Hall - Here's how
Removing reverb with Adobe Audition is an almost impossible task. We give you tips on how you can reduce the reverb a little.
Disable Hall effect in audition
If the reverb is not contained in the signal itself, but is only set as an effect for a track, a bus or the master output, you can of course simply deactivate the effect and thus eliminate the reverb:
- Click on the "Multitrack" view and open the "Mixer" tab.
- Deactivate all reverb effects in the relevant track, bus or master output by clicking on the green buttons.
- Only when the reverb effects in the track as well as in the bus and in the master are deactivated, the reverb will definitely disappear.
Remove Hall a little with Adobe Audition
You can remove existing reverb in various ways with Adobe Audition. However, either the effect is low or the intervention produces clearly audible interference in the signal. However, we will present three methods that will work for you. The complicated methods are explained step-by-step with screenshots in the following picture gallery:
- Forming the sum: With the typical microphone, the direct sound of the left and right channels is roughly in phase. The reverb tail has an almost random phase distribution. If you make a mono mix of both stereo channels, the direct sound is amplified by approx. 6dB, the late reverberation by an average of only 3. This way you reduce the reverberation minimally.
- Isolate reverb and subtract from the signal: Invert a channel via Effects> Invert and then create a mono track from the stereo track. Undo the inversion and invert the generated mono signal. Now do a stereo mix of both. This now has a slightly reduced Hall component.
- Gate: Select the "Noise gate @ 20dB" under "Effects"> "Amplitude and compression"> "Dynamic processing" under "Effect presets". This radically removes all signals below a certain threshold. A gate generates few artifacts, especially with percussive sounds.
- Expensive alternative: Professional audio repair tools such as iZotope RX 4 are more suitable for removing reverb. This has a "derverb effect", which in some cases provides acceptable results.
All descriptions refer to Adobe Audition 3. How to amplify bass in Audition, remove network hum and noise and export projects as MP3 can be found in further CHIP practical tips.