I'm the one who rewrote the effect. Thank you for your feedback, but if you do not specify which precise settings you used, then these comments and the example files are not helpful to me. You can get bad results with either effect, if the settings are not appropriate.
I am guessing that you did vary the settings from the defaults. Then you were using Frequency Smoothing of zero with Noise Reduction in 2.1.0. We now regret that choice of default setting, and changed it to 3 in 2.1.2. In fact 6 is the real equivalent of the default 150 Hz smoothing of old Noise Reduction.
You can easily adjust that slider in 2.1.0. I predict you will have much more satisfactory results. Comparing frequency smoothing of 3 to 6 in the new effect is the fairer comparison with the old effect's defaults.
sizemore wrote:Hello; I was just coming to the forum to post a question asking if anybody else thinks the old Noise Removal was far superior to the new Noise Reduction. I saw this post and just decided to add my thoughts and experiences to it.
My home studio is not 100% soundproof and silent. When I record vocals with my excellent microphone, there is additional sound picked up. Yet I want only the vocals in the recording. The old Noise Removal, combined with the Generate Silence feature, gives me perfect results --- but the new Noise Reduction feature is totally unsatisfactory.
Noise Reduction does not remove as much unwanted background noise; plus, as the original poster mentioned, it has a tendency to add a metallic noise (to well-recorded audio) on the first pass --- whereas Noise Removal will only add a metallic noise (to well-recorded audio) if you make multiple passes with it --- which I never have to do with my vocals. (Both Noise Reduction and Noise Removal will add metallic noise to audio files which contain a lot of background noise.)
I have two computers, side-by-side: the old computer with Audacity 2.0.5 and Noise Removal, and the new computer with Audacity 2.1.0 and Noise Reduction. I do ALL my vocals recording on the old computer, so I can enjoy the benefits of Audacity 2.0.5 and Noise removal.
Also, if I download or scrape an online audio recording which contains unwanted noise, Noise removal is far superior than Noise Reduction.
You asked for examples: please hear attached 3 different versions of a scraped audio file which contains a good bit of background noise (I think it's wind). The 1st 7 seconds is the Raw file; the 2nd is same file with Noise Reduction; the 3rd is with Noise Removal. You will notice that, because of the significant amount of background noise, both Noise reduction and Noise Removal add a bit of metallic noise --- but Noise Removal demonstrates superior results and less metallic noise. (Please note: even though the wav file was 4 MB, and therefore the upload should not have been rejected by this platform, I was forced to upload mp3, instead, due to file size.)
If I were forced to choose only one Audacity to use, it would be 2.0.5, because of this subject under discussion.
Why not add Noise Removal back to the new versions of Audacity, so people can choose which feature they wish to use, under different circumstances?