I have a poor recording of a public talk. I want to improve the full recording as much as possible. I’m using Audacity 2.1.0 under Windows 7.
I have attached a short WAV clip of the original, unprocessed recording. If anyone can do anything with it, and kindly let me know the steps you take in Audacity, I would be extremely grateful. I’ve posted this as a new thread to avoid confusion with another clip I posted that was deemed useless because it had already been processed.
The main problem is the “other” voice (“Yes, I do”). That voice is so low down in the noise floor that there is no way to separate it from the noise without badly distorting the voice. Similar to cyrano, I would amplify by about 40 dB, then use Noise Reduction. Don’t expect to be able to eliminate the noise - attempting to do so will badly affect the voices. The best that you can hope for is to reduce the noise without doing too much damage to the voices. I would suggest raising the “smoothing” setting to 6 so that the distant voice is a bit less “bubbly”, so the settings are: -12, 6, 6.
Using 12 - 6 - 6 on the noise limiter gives me a better result that I was able to achieve before. I wouldn’t mind sacrificing the audience comment, “Yes; I do.” if it would enable a better result.
Can anyone also advise on getting rid of the harsh, hissy S’s elsewhere on the recording. I have attached a short section of the original unprocessed recording with an example. Notice how harsh the 's’s are in the word ‘system’ (especially after amplification is applied). I can modify all of the offending S’s individually, using the EQ, by moving two of the sliders (around 4000Hz) down about 3/4 of the way to the bottom for the duration of each offending ‘S’. However, there are hundreds of these harsh, whistling S’s throughout the recording.
What about applying other mods to the entire recording? I heard that some people recommend compression and normalization (and some EQ to compensate for poor microphones). Would any such mods improve the overall quality to the average ear?
Thank you; that looks promising. However I am having some issue with this plugin download. Audacity 2.1.0 & Windows 7. After downloading the plugin from the link in the first post oWhen I try and move the downloaded plugin into my Audacity plugins folder, it takes forever, and I end up having to end the process in Windows Task Manager, otherwise, I can’t shut down my PC! …Not sure what’s going on there! Any clues?