Noise Reduction v.1.0 size 2.51 MB The Noise Reduction plugin is based on a spectral gate to filter out unwanted noise in the frequency domain. The gate is based on the lightweight dynamic. OBS has a few basic plugins of its own, mostly for noise control, but we’ll be using the “VST 2.x Plug-in” option. Here you can select the plugin you’d like to add. We’ll configure “reafirstandalone” first as it’s pretty useful for EQ and noise suppression. Free vst plugins September 9, 2018 No Comments Noise Reduction size 2.51 MB The Noise Reduction plugin is based on a spectral gate to filter out unwanted noise in the frequency domain. The gate is based on the lightweight dynamic series and features a soft knee and customizable attack and release times. Brusfri is a highly advanced audio noise reducer, packed into a simple and straight-forward interface. It is very well suited for cleaning up noisy audio recordings, while retaining sound quality. Unlike many other noise reducers on the market, Brusfri doesn’t mess with audio phasing to suppress noise (a technique that often comes with.

• Vst 2.x Plugin Noise Reduction Sound
• Vst 2.x Plugin Noise Reduction Plugin
• Vst 2.x Plugin Noise Reduction Software
• Vst 2.x Plugin Noise Reduction Tool

Restoration Suite 2 — a Giant Leap in Audio Quality

Restoration Suite 2 is a suite of four cutting edge plug-in for audio restoration and noise reduction:

• DeNoise 2 is a plug-in designed to reduce noise such as hiss, wind noise, buzz and camera noise. The noise can be reduced automatically in the adaptive mode or after measuring the characteristics of the noise in the noise profile mode. New in version 2 are dynamic noise profiles that capture the dynamic properties of the noise so that noise that fluctuates over time, such as wind noise, can be effectively reduced. The new algorithm has also been greatly improved and is now even less prone to typical de-noising artifacts.
• DeHum 2 targets hum and buzz typically introduced by poorly grounded electrical equipment, but also other tonal noise sources like electrical motor noise. The hum detection algorithm has been improved in version 2 and there’s now a new Scan button that automatically fine tunes the fundamental hum frequency.
• DeClick 2 is designed to remove impulsive noise such as clicks, crackle and thumps. These distortions are frequently encountered on LP and 78 RPM records, but also occur in digital recordings due to drop-outs or distorted data packets. DeClick 2’s thump reduction works also effectively on vocal recordings with unwanted plosives. The algorithm has been improved in version 2 and is now less prone to reducing attacks and transients in the wanted signal.
• DeClip 2 restores audio recordings distorted by analog or digital clipping with an improved algorithm.

New in Version 2

All four plug-ins have received major improvements both in the processing algorithms and the user interface compared to version 1. DeNoise 2 introduces the novel dynamic noise profiles that help reducing noise that varies randomly over time, such as wind noise or rustle from lavalier microphones. Where the earlier versions merely captured a static noise print with time-constant noise levels, the dynamic noise profiles capture statistics from the noise to be reduced. The noise suppression algorithm then estimates the most suitable noise threshold curve for the noisy input signal using the measured statistics.

DeNoise 2, DeClick 2 and DeHum 2 now support Mid/Side (M/S) processing, which can reduce unwanted fluctuations in the stereo image. The core algorithm in DeClick 2 received major improvements and now better preserves transients and can be pushed to higher click and crackle sensitivities without introducing artifacts.

DeHum 2 has a new automatic fine-tune button that triggers automatic estimation of the hum noise frequency. The hum tracking and suppression have also been improved. DeClip 2 was improved in terms of audio quality and now offers even more impressive reconstruction of clipped signal peaks. All the plug-ins in the suite now support surround and immersive audio formats up to 7.1.6 channels.

Acon Digital Restoration Suite 2 is available as VST, VST3 or AAX for both Windows and Mac or as AU plug-ins for Mac. There are 32 and 64 bit versions for Windows and the Mac version is 64 bit.

Platforms and Plug-in Formats

• Available as VST, VST3 or AAX plug-ins on PC (Windows)
• Available as VST, VST3, AAX or AU plug-ins on Apple Macintosh (OS X)
• The Windows is available as native 32 bit or 64 bit versions and the Mac version is 64 bit
• Supports sampling rates up to 192 kHz
• Supports surround and immersive multi-channel audio up to 7.1.6 channels

Acon Digital DeNoise 2

• Advanced algorithms reduce stationary noise efficiently with minimal impact on the wanted material
• Reduces noise in adaptive mode or based on noise analysis.
• Novel dynamic noise profiles makes it possible to remove noise that changed rapidly over time
• Transient detection ensures that transients remain untouched throughout the noise reduction process
• Effective temporal smoothing reduces “musical noise” artifacts
• Optional M/S processing
• Target broadband and tonal noise or optionally broadband only
• Graphical representation of input frequency spectrum and the noise profile
• Frequency emphasis filter
  • High and low shelving filters with variable slopes (-3 to -96 dB / octave)
  • High and low peak filters with adjustable bandwidth (0.1 to 3.0 octaves)
  • Graphical representation of frequency response
  • Editing of filter settings through handles in the frequency response curve
• Solo Noise mode allows you to listen to the removed signal

Acon Digital DeHum 2

• Remove hum and buzz with minimal loss of the wanted signal
• Novel sinusoidal re-synthesis algorithm (preserves wanted signal to a much larger extent) or conventional notch filter mode
• Adaptive mode allows removal of hum signals with a fluctuating fundamental frequency
• New automatic fine-tune button looks automatically scans the fundamental frequency
• Removes up to 96 harmonics
• Optional M/S processing
• Option to target only odd harmonics
• High resolution spectrum analysis of the input signal
• Visual indication of the estimated fundamental frequency as well as the harmonics
• Solo Hum mode allows you to listen to the removed signal

Acon Digital DeClick 2

• Seperate detection and restoration of clicks, crackle, thumps and plosives
• Very accurate detection of click start time and duration ensures minimal impact on the wanted material
• Improved algorithm allows higher sensitivities without artifacts
• CPU efficient algorithm
• Optional M/S processing
• Visual curve meters show the clicks and crackle removal rates
• Residual signal mode allows you to listen to the removed signal

Acon Digital DeClip 2

• Reconstructs peaks distorted by analog or digital clipping
• Improved algorithm over version 1.x
• Separately adjustable upper and lower threshold values
• Optional upper and lower threshold lock simplifies the workflow in the case of symmetrical clipping
• Graphical representation of the input and output level histograms makes it easy to set the threshold values and monitor the restoration process visually
• Threshold values can be adjusted directly from the level histograms by dragging upper and lower threshold handles

Vst 2.x Plugin Noise Reduction Sound

PC Version (Windows)

• Windows 7 / 8.x / 10
• A host application that is compatible with VST, VST3 (32 bit or 64 bit) or AAX (Pro Tools 11 or higher)
• Intel Core i3 or AMD multi-core processor (Intel Core i5 or faster recommended)
• 1366 x 768 display resolution (1920 x 1080 or higher recommended)
• 1 GB RAM (4 GB or more recommended)
• 1 GB free HD space

Macintosh Version (OS X)

• OS X 10.8 or later
• A host application that is compatible with AU, VST, VST3 or AAX (Pro Tools 11 or higher)
• 1 GB RAM (4 GB or more recommended)
• 1 GB free HD space

The Case for Noise Reduction

For the last 10+ years, I’ve been producing video training materials on IT systems automation, cloud, containers, and software development. Over the course of these years, I’ve learned many techniques about how to improve both video and audio quality. In fact, I wrote an article about key techniques to produce a great video. One of the techniques I’ve picked up more recently is noise reduction.

Vst 2.x Plugin Noise Reduction Plugin

No matter what type of microphone you’re using, there were always be background noise. This is well-known as the “self-noise” of a microphone. There are other types of noise besides the internal electronic noise, however.

As a listener, you don’t always realize the amount of effort that goes into producing high quality audio. Listeners hear background noises, wet-mouth, and heavy breathing, but otherwise expect a crisp listening experience.

Some common examples of background noises include:

• The constant hum of a fan
• Wind whipping against the window
• Cars driving past the house or office
• Birds chirping outside
• Air blowing through HVAC vents

For the past several months, I have been using Open Broadcaster Studio (OBS), to create video recordings. OBS offers a variety of built-in filters for both audio and video streams. These built-in filters include a “Noise Reduction” filter. However, the built-in noise reduction plug-in only does a so-so job.

A Working Noise Reduction Solution

What can we do to solve this problem?

There’s a professional digital audio workstation (DAW) package called REAPER. REAPER itself has a license cost, but the company offers a free plug-in set. ReaPlugs are built on the standard Virtual Studio Technology (VST) interface, which processes audio in the pipeline.

For now, go ahead and download ReaPlugs and install the package on your system. OBS should automatically pick up these plug-ins when you add a VST filter.

One of the VST plug-ins included in ReaPlugs is called ReaFIR. ReaFIR lets you record a noise profile and then apply it in real-time. In fact, you can add the plug-in to your audio filters multiple times, and pre-record different noise profiles. That way, depending on what noises are in your environment, you can enable or disable them at will.

Add ReaFIR to your audio input

Vst 2.x Plugin Noise Reduction Software

Now let’s add the ReaFIR plug-in to your OBS configuration.

Right-click your audio input in OBS and select the Filters option. On the bottom-left of the Filters screen, click the plus sign. Choose the VST 2.x Plug-in option.

1. You can type any desired name for the plug-in, such as “Box Fan Noise Reduction”
2. From the drop-down box, select the reafir_standalone plug-in
3. Click the Open Plug-in Interface button to configure ReaFIR
4. From the Mode drop-down, choose Subtract
5. Check the box Automatically build noise profile
6. Let the background noise build the profile for a few seconds
7. Uncheck the box and close the window. You’re done!

Vst 2.x Plugin Noise Reduction Tool

Now that you’ve completed the configuration of ReaFIR, give it a try. Recording a new video clip and see how well the noise reduction works. You should notice a significant improvement in the clarity of your voice!

Example Noise Reduction Profiles

Now that you understand how to solve noise reduction, let’s explore some common examples of noise profiles.

Desktop Computer

Although I prefer having a silent desktop computer, a high-performance computer will generate heat. Between the CPU and GPU fans, my media production machine creates a little noise. The red line indicates the noise profile that is built by ReaFIR.

Box Fan

I have a box fan that I sometimes use to eject heat from my office. This is a fairly inexpensive, noisy, yet effective unit. The box fan’s noise profile covers a much wider frequency range than the desktop computer fan. Although the highest decibel level is around 100Hz, it ranges all the way up to 10kHz.

Keyboard Typing

Although every keyboard will have a unique noise profile, I’m using the Microsoft Sidewinder X4. While typing a few words, this is what its noise profile looks like. As you can see, the high points are around 45Hz and a range from 400Hz to 10kHz.

Conclusion

By using the techniques in this article, you should notice a drastic benefit to your audio quality. I hope this helped you to understand how to employ noise reduction in OBS. Please check out some of the articles on my website, and leave a comment with your feedback!