Vst Plugin To Remove Background Noise
Floorfish noise-gate VST If you're looking for a free noise gate VST plugin, you must first try floorfish. This gate / expander does the job perfectly. Useful for removing background noise, and can be used for more radical gating effects. Use the ERA Noise Remover to easily reduce or completely remove unwanted background noise such as computer fans, air-conditioners, electric hum & hiss or other sonic artifacts. The ERA Noise Remover is a multi-patented, single knob denoise plugin that allows you to clean up your noisy recordings faster and easier than ever. The Denoiser is designed to reduce or remove constant background noises in recordings. This background noise can include tape hiss, microphone hum, power mains buzz, camera motor noise, air-conditioning rumble and any other type of noise that doesn't change in level or frequency significantly throughout the recording.
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Reaper audio recording software is awesome, and is what I recommend to everyone. I use it every day. And I also seem to learn something new about it every day. It has an incredible noise reduction tool built right in that I just discovered recently.
The reason I didn't know about it sooner is primarily due to the fact that reducing recorded noise is not its only or primary function. It just happens to do it REALLY well, and non-destructively (if that's not a word already, I hereby create it). The tool is called ReaFIR. I know! Who'd have thought to look for noise reduction editing chops under a moniker like that?
Review of What Noise Reduction Does
First though, let's do a quick review of what noise reduction does for us in the world of recording. There is almost always a bit of background noise in recorded audio. It is especially noticeable in recordings of just one thing, like a single voice.
The noise usually comes from a combination of stuff happening in the space/room where the recording takes place, and the electronics of the microphone and other gear involved. Recordings sound much better if you can reduce the noise, and that is what noise reduction tools are designed to do.
The typical method is to use an effect in an audio editor called 'Noise Reduction.' See my article How To Get Rid Of Background Noise In Audacity for how that normally works.
But since the noise and the voice are both together in the same recording, it isn't a perfect process. What noise reduction tools try to do is filter and removing as much noise as it can without also removing too much of the voice.
In order to do this, the software has to know what noise looks like so it can separate it from the signal (voice). So you have to highlight a section of the recording where there is ONLY noise, and no voice, and feed that sample to the noise reduction tool. Once it has the noise profile, it can do its thing.
My favorite recording program, Reaper, is a digital audio workstation (DAW), which is a fancy way of saying full-featured multi-track recording program. For more information on why I love Reaper so much, see my article, Why Reaper Rocks As A DAW.
But for some reason, Reaper doesn't have an effect called 'Noise Reduction.' So how do you reduce noise in Reaper?
Vst Plugin To Remove Background Noise Louder
Enter ReaFIR
Reaper names its effect plugins by using 'Rea' as a prefix (for Reaper), and then the name of the function after it. So ReaFIR means Reaper FIR. So what does FIR mean? It stands for Finite Impulse Response. If you would really like to geek out on what it really means, including all the scary math involved, you can read about it at the Finite Impulse Response Wikipedia page. But the simpler definition for ReaFIR itself from the Reaper manual is:
ReaFIR is a EQ and dynamics plug-in that includes an FFT spectrum analysis window. Amongst other things it can be used as a precision EQ, a gate, a fast attack/release precision compressor, a noise reduction tool.
Obviously it is that last thing we're interested in. In the video below, I walk you through how to use ReaFIR to reduce the hiss noise that happened when I recorded a short voice over. BTW, this video was recorded several years ago (why it says from the 'upcoming' course). That course, The Newbies Guide To Audio Recording Awesomeness - Part 2, has now been around since 2012 and had been updated may times since.
How Does It Work?
So see it in action in the video above. But here is is a written summary of how it works. Once you have recorded some audio onto a track, click the FX button in the track control panel. Then select VST: ReaFIR from the Cockos collection of FX plug-ins.
Next, go ahead and click the “OK” button and then close the ReaFIR window by clicking on the red X in the upper right corner.
Vst Plugin To Remove Background Noise In House
Now just highlight/select a section of the voice-over audio that has no voice actually saying anything. In other words, pick a small area that was only noise.
Then click on the Toggle Repeat button (down by the Play and Stop buttons). This is important because it will prevent any of the actual voice signal being played when sampling the noise for ReaFIR. With that area still highlighted, click on the FX button again to open the ReaFIR window.
In the Mode window of the ReaFIR tool, select Subtract, and put a tick into the Automatically build noise profile box. Now hit the Space bar on your keyboard (which will play the audio, which is just the noise at this point). You'll hear it for a second and then it will be gone. That's ReaFIR getting rid of the noise. Now hit the Space bar again to stop playback.
The next part is very important! Uncheck the box that says Automatically build noise profile. Otherwise ReaFIR will try to grab your voice and anything else on the track, and treat it as noise. Once you've done that, go ahead and close the ReaFIR window. Now all you have to do is click on the Toggle Repeat button again to turn it off, and listen to the entire track.
Voila! The noise is gone and only the voice remains. Pretty darned cool huh? And I think the result is better than a lot of tools dedicated to removing noise. I didn't hear much, if any, of the weirdness that sometimes happens after noise reduction.
The audio takes on a kind of swirly, under-water-y artifact sometimes. But I didn't hear that in this example. However, there noise we got rid of was a low-level and consistent hiss type of noise.
The louder the noise and the more varied the noise (if it contains lots of frequencies and intermittent clicks, pops, etc.), the more likely you are to have that swirly artifact left over after noise reduction.
So now you know about the secret noise reduction tool at your disposal if you use Reaper. Use it wisely.
DeNoiser allows you to remove noise from the audio material.
Activates/Deactivates the module.
Allows you to listen to the signal that has been removed from the original audio material.
Allows you to remove noise that evolves over time from the audio signal.
Allows you to remove noise that does not evolve over time from the audio signal. The Learn option allows you to define the stationary noise.
The Noise options allow you to define a section in an audio file that contains a static noise that you want to remove. When you then render the audio file, you can remove the recorded static noise from the audio signal.
Play back the audio section that contains the noise that you want to remove and click Learn.
RestoreRig records the audio for a few seconds to detect the static noise.
Use the Static Level dial to set the level.
/free-guitar-vst-logic.html. To remove the recorded static noise in the audio file, render the audio file.
If you want to record the static noise at another audio section, click Reset, play back another audio section, and click Learn again.
Allows you to select different DeNoiser algorithms. Depending on the audio material, different modes can affect the DeNoiser quality.
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Smooth is sufficient for most uses.
Use Musical for harmonic content with low rhythmic or transient components.
Use Rhythmic for drum and percussive content.
Use Strong if the noise level reduction is more important than the accuracy of the noise reduction.
Use Speech for vocal content.