Noise Reduction is a DirectX plug-in used to restore, repair, and renew your audio recordings. The package actually contains four individual plug-ins: Noise Reduction, Click and Crackle Removal, Vinyl Restoration, and Clipped Peak Restoration.

The Noise Reduction plug-in is designed to analyze and remove background noise such as tape hiss, electrical hum, and machinery rumble. Unlike a normal filter, Noise Reduction 2.0 can do so without removing part of the source material.

The Click and Crackle Removal plug-in detects clicks and pops often found in older recordings or as the result of bad splice editing and automatically replaces them to minimize their audibility.

The Vinyl Restoration plug-in is designed to remove both the pops and clicks generated by dirt and scratches in the surface of a record and the broadband surface noise from the old recording in a single operation.

The Clipped Peak Restoration plug-in recovers the lost signal due to clipping and reduces the harsh distortion that results. This plug-in rounds the tops of clipped peaks and applies peak limiting to the area immediately surrounding the audio clip.

Features

• Capture a Noise Print by sampling a small interval of silence in source material.
• Select the appropriate preset or create your own based on individual applications. Experiment with 4 Reduction Type operation modes.
• Model the noise spectrum by adjusting FFT Window Size and Overlap to optimize precision. Manually adjust Noise Envelope points if desired.
• Optimize the noise reduction algorithm by adjusting Noise Bias and Reduce Noise By controls. Set Attack/Release Speed controls to suit transient conditions.
• Compensate for high frequencies lost in the noise filter by adjusting High-Shelf Gain and Frequency controls to brighten the sound.
• Observe your results with the real-time Preview option. Interactively tune parameters to optimize results, and review residual output to verify material removed.
• Select the appropriate preset, or create your own based on individual applications.
• Adjust Click Shape, Click Size, and Sensitivity controls. Experiment with your own filter parameter adjustments.
• Select Noise Level to establish noise threshold.
• Select Remove Low Frequency Rumble option and automatically remove inaudible frequencies caused by warped records. Select the General Restoration preset, or create your own based on individual applications.
• Experiment with this plug-in's simplified parameter controls — adjust Reduce Noise By, Noise Floor, and Affect Frequencies Above controls to optimize surface noise removal, adjust Attack/Release Speed controls to minimize processing artifacts, and adjust Click Removal Amount to optimize click and pop removal.
• Select the appropriate preset, or create your own based on individual applications.
• Select Enable Post-limiter to set the attenuation level automatically, or adjust the Attenuation control manually to set headroom for reconstructed peaks.
• Select Cross Fade Edges to restore peaks in selected regions seamlessly.

Purchase Information

• $399

Requirements

• Windows 95/98/NT 4.0
• Pentium 200 MHz (400 MHz recommended)
• 32 MB RAM
• 5 MB disk space
• Windows-compatible sound card
• Microsoft DirectX Media Runtime 6.0 or later
• Software compatible with DirectX plug-ins and real-time or non-real-time processing of either 16-bit or 32-bit stereo sound streams.