There is a noise reduction process and there is a denoiser plug in and neither of them seem to be doing a good job. Is there a comprehensive tutorial on how to perform noise reduction on audio?
@Vinayak-Raghuvamshi What kind of noise do you want to remove?
I use the best mics from Shure and the best amps from Volt, yet many times my recordings of my live sessions with students land up having some static kind of noise. Not a consistent white noise but rather random static. I also get clicks and pops which I am able to remove but this static (kind of old radio) noise I am unable to clean up.
Hi @Vinayak-Raghuvamshi, can you post a sample file on GoogleDrive, or other sharing site like DropBox, OneDrive, Mega, 4Shared, ect.
'Noise reduction' cannot effectually remove static, especially if it occurs randomly. There are likely issues with the encoding or playback that is causing the static.
What format are you saving the files as and what are the settings. Also does this occur on all computers.
Otherwse, what version of Sound Forge are you using and pertinent settings. Read the 'Sticky' at the head for the main Sound Forge forum page.
Hi
. . . . yet many times my recordings of my live sessions with students land up having some static kind of noise . . . .
Do you have the students turn off their mobile phones?
If not I would advise you to do so, the interference with them at close quarters to the mics, amps etc can cause random interference, often sounding like short bursts of distorted morse code.
John EB
Hi @Vinayak-Raghuvamshi, can you post a sample file on GoogleDrive, or other sharing site like DropBox, OneDrive, Mega, 4Shared, ect.
'Noise reduction' cannot effectually remove static, especially if it occurs randomly. There are likely issues with the encoding or playback that is causing the static.
What format are you saving the files as and what are the settings. Also does this occur on all computers.Otherwse, what version of Sound Forge are you using and pertinent settings. Read the 'Sticky' at the head for the main Sound Forge forum page.
Here is a sample where I hear random noise that I am unable to clean up. I am using Sound Forge Pro 16. https://podcasts.apple.com/us/podcast/pragmatic-bhakti-sutra-shlokas-13-to-15/id1657965844?i=1000595988957
@Vinayak-Raghuvamshi I just listened to the first minutes, not the whole recording. There are multiple problems.
Some occasional skips/clicks sound like sample losses to me. You would need to redraw the waveform by hand at these positions.
There are also some pops. These can be prevented with a pop filter or by placing the microphone a little bit differently so that the speaker doesn't blow air into the microphone
Some other noises seem to be background noises that aren't filtered out by your streaming software. I don't think they can be removed automatically with the plugins in Sound Forge. I think you need a sprectral editor like SpectraLayers for this. This tool is included in the Suite version of Sound Forge. If you don't own the Suite version you might check out the demo version here https://www.steinberg.net/spectralayers/
I think that the recording sounds okay under these circumstances. It is muffled because it is missing high frequencies after the denoising. I only know the tool https://www.izotope.com/en/products/rx/features/spectral-recovery.html to recreate missing frequencies. But I'm not sure how good it will work with your recording.
I would very much endorse what @SP. has written.
Having listened to a few minutes of that recording by far your "biggest problem" is that you have very much overused the Noise Reduction facility! IOW, you have applied far too much Noise Reduction at one go. The result of this is the "phasey, warbling sound" that is so prevalent on the voice.
Try using much less reduction but run the process several times, each time taking off a little of the noise.
If you want the best software for noise reduction purposes IMO it is the product that @SP. links to, i.e. iZotope RX but it is not cheap! However, if you are doing a lot of recordings where "noise" is an issue then I know of no better solution. The suggestion I made above about doing the reduction by running the process several times is what RX does, but in one pass, i.e., you run your audio through it once but the outcome is the same as if you had done so several times, each time removing a little more noise. But it is possible to overdo the noise reduction with RX as well so you need to check carefully the resulting output and if it sounds like your current recording, reduce its effect.
HTH
Jeff
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