Mono-a-Mono removes scratches and tape or surface noise from stereo recordings of mono sources. It can be used to enhance digital recordings of old records, audio tapes, or even cylinders, provided only that they are digitised in stereo.
Version: 4.2Mono-a-Mono removes scratches and tape or surface noise from stereo recordings of mono sources.
License: Free To Try $17.00
Operating System: Windows
It can be used to enhance digital recordings of old records (whether 78, 45, or 33 rpm, shellac, acetate or vinyl), audio tapes (reel-to-reel or cassette), or even cylinder recordings, provided only that the playback and digitisation of the signal has been performed in stereo, but the original source was mono. It rarely needs any configuration or tweaking. It produces excellent results automatically.
Mono-a-Mono uses a simple muting algorithm to remove the most obvious clicks, and then filters out any components which are not present in both left and right channels.
In this way, almost all the audible surface noise can be removed, and there are very few cases where any audible artefacts are introduced.
Although designed to process any stereo recording of a mono source, Mono-a-Mono has some features which are especially well-suited to processing old records such as 78 rpm discs and cylinders: it allows bass and treble frequencies to be boosted or cut (to compensate for the different equalisation characteristics used during the recording process) and it has a "click removal" function to reduce the effect of the worst scratches and clicks from old recordings. Two further sliders control simple filters to remove low-frequency rumble / hum and high-frequency hiss.
The "Click Remover" slider controls the sensitivity of the click suppression algorithm, while the "Silence Enhancer" controls the suppression of quiet signals.
It makes those sections of a recording quieter (the way they were meant to be). The "Rejuvenator" performs a similar function for the louder sections, reducing the audibility of any wear-and-tear (or other distortion).
Mono-a-Mono is a very cost-effective method for hiding defects in old records.
The default settings are usually good, but the various modules can be controlled independently to cope with even the most difficult recordings.
Version 4.2: Bug fix in click detector and reorganised GUI. Increased time limit in trial version to 30 seconds.
Version 4.1: Adjusted range of controls to be a bit more mutually-consistent. Improved time resolution.
Version 3.1: Improved sensitivity of click detector and quality of the click suppression algorithm. Added drag'n'drop to list of files to be processed. Output folder can now be set to 'same as input' for files in different folders. Updated wxWidgets GUI library and NSIS installer.
Version 3.0: Added control to maintain original signal level; Improved signal processing algorithms; Tiny cosmetic change.
Version 2.13: Extended presets to provide a 'wizard' interface; simplified and improved click detection.
Version 2.11: Added: vocal remover function, preset control values, support for vertical-cut recordings, multiple file selections for preview and list removal.
Version 2.6: Added control of preview duration, improved handling of recordings with silent lead-in, upgraded NSIS installer to version 2.34.
Version 2.5: Added preview function and equalisation controls, added a proper help button, improved default noise reduction parameter range for classical recordings, updated NSIS installer to fix problem with Win9x, updated wxWidgets library.
Version 2.4: Improved click removal parameters, replaced previous executable packer, small bug fix.
Version 2.3: Reduced price, added rumble filter, saved configuration between sessions, improved noise weighting, fixed a start-up bug, updated NSIS installer and wxWidgets library.