VST Plug-In that effectively removes broadband noise while still excellently preserving the audio quality of the original signal.

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NoiseFree™ automatically removes or reduces any kind of constant background noise like hiss, surface noise, hum, air-conditioning equipment or camera sound.
Due to the Algorithmix® proprietary, psycho-acoustically optimized noise reduction algorithm, NoiseFree™ efficaciously preserves timbre, ambience, and low-level details of the original signal, as well as highly reduces the appearance of artifacts.
On one hand, it can be used for high-resolution re-mastering tasks. On the other hand, it is a real weapon in cleaning up critical speech recordings for forensic purposes.
One very common problem in the daily business of an audio engineer is the struggle against a noisy signal. The standard methods of noise extraction by means of filters do not work if spectral components of noise overlap the desired signal. In such situations, the only solution is to use sophisticated signal processing algorithms to suppress unwanted noise in a much more intelligent way.

The NoiseFree™ PlugIn effectively removes broadband noise from pre-recorded audio material. It has been designed to perfectly cover a wide range of applications: from the high-quality de-noising of valuable music treasures, to cleaning location recordings for film from environmental noise, even the treatment of critical forensic material recorded at a very poor signal-to-noise ratio and/or in reverberate environment.

Typical tasks for NoiseFree™ include removal of tape-hiss, surface noise of old records and optical soundtracks, broadcastwax cylinders, broadcast noise, microphone and preamp noise, as well as enhancement of conversations and interviews that lack intelligibility.

Unlike other systems, the NoiseFree™ PlugIn works virtually without artifacts when using the correct settings for all parameters.

The de-noising process can work based on either the built-in white noise profile or a recorded noise profile. The unique Learn algorithm allows recording a noise sample from virtually any part of the audio material, even if there is no noise-only portion available. A sophisticated 5-band Noise Profile EQ is provided for modifying the shape of noise profiles and smoothing them for optimal performance.

Using only two sliders and a few presets you can get respectable results within minutes. The signal scope helps to properly adjust the Threshold. The unique Differ function allows monitoring of the signal part being removed in the de-noising process, which helps optimize the setup.

The advanced parameters Ambience, Recovery and Decorrelation allow fine tuning NoiseFree™ to differentiate between real noise and sharp signal transients. The Chase function, mainly designed for speech de-noising, automatically detects any fluctuations in the background noise and adaptively adjusts the noise profile according to these changes.

NoiseFree™ works impeccably with sampling rates up to 384 kHz. Thus it is perfectly suitable for high-resolution DSD post-processing. Since the CPU requirement for the NoiseFree™ PlugIn is quite low, you can change and optimize all parameters while listening to the audio material in real-time.

Features

• flawless operation with up to 96 and 192 kHz sampling frequency (mixtreme 192)
• proprietary, psychoacoustically-optimized noise reduction algorithm
• virtually no artifacts when using correct settings for all parameters
• retention of timbre, ambience and low-level details of the original signal
• automatic removal or reduction of any kind of constant background noise like hiss, hum, camera sound and air-conditioning equipment
• removal of residual and surface noise from old 78 rpm and vinyl records remaining after de-clicking and de-crackling process
• noise profile capture in two different ways:
  - for the de-noising of high-quality recordings from noise-only portion of the input audio material,
  - for time-saving tasks from any part of the input audio material
• sophisticated noise profile modifier
• possibility of creating artificial noise profiles just from flat noise using the noise profile modifier
• automatic background noise chasing function for adaptive real-time de-noising
• pre-defined processing profiles simplifying de-noising tasks in typical situations
• clickless real-time parameter adjustment during playback
• expert parameters for minimizing the appearance of artifacts
• spectrum analyzer for real-time tracking of the de-noising process
• unique difference function for real-time audio monitoring of the noise being removed
• complete setup exchange among several simultaneously opened PlugIns
• very effectively helps in cleaning up poor recorded dialogs or telephone cuts to be restored for forensic purposes
• extremely high internal calculation precision (double floating point - 80 bits)
• moderate CPU load, thus suitable for real-time multi-channel operation
• short learning curve; good results within minutes with only two sliders
• automatic latency compensation with Soundscape Editor 4.1 and above

• removal of tape hiss and electronic noise from preamps and audio processors
• de-noising after de-clicking and de-crackling of old records and optical soundtracks
• re-mastering old recordings to CD, SACD, or DVD
• cleaning up live recording from environmental noise
• eliminating camera and air-condition noise from film and video soundtracks
• cleaning up poor recorded dialogs and telephone cuts to be restored for forensic purposes
• reducing noise from AM, short-wave, and FM radio, as well as TV sound
• real-time operation with a turntable, tape deck, or radio receiver
• archiving and restoration of historic audio material