The DeNoiser Plug-In with its integrated de-hisser delivers surgical broadband noise reduction in real time. The process is based on a continual analysis of the input signal in order to build a noise profile. Alternatively use Freeze Mode to sample a section of audio containing just target noise. Simply define the threshold below which noise is removed and use the Reduction slider to taste.
There is a delicate balance between removing noise and retaining the character of your original recording, so the plugin adds a Warmth control to return some richness and added a DIFF function to audition only the removed noise.
- Separate DeHiss, Detect & Remove Sections for intuitive use
- High resolution display of input signal & its noise profile
- Frequency Bias Curve to fine-tune noise threshold & reduction
- Mid-Side mode to de-noise only side content
- Warmth control for sweetening after noise removal
- Make-up gain for true A/B comparisons
The Oxford DeNoiser also contains a dedicated DeHisser section before the broadband noise-removal section. This can be used quite aggressively on audio such as dialogue where there is not a lot of high frequency content that needs preserving, and where the priority is to reduce the hiss to an acceptably clean level. For additional control, the DeNoiser has the ability to adjust the theshold of the noise-profile at different frequencies by means of a bias curve. There is also a bias curve to adjust the amount of reduction at various frequencies allowing more noise removal at some frequencies while still being gentle at other frequencies. These bias curves work in all three modes - Auto, Freeze or Manual. Further manipulation of the detect threshold and reduction amount is available in the form of the Smooth and Tune controls.
There is a Mid/Side operation mode in the DeNoiser, which causes the plugin to de-noise only the Side signal content of the Left-Right signal, leaving the Mid content alone. The Left-Right signal is first converted to Mid-Side, then the Side is de-noised, then the signal is converted back to Left-Right. This is of course particularly useful in broadcast where switching between stereo and mono should not cause a noticeable change in dominant noise content. DeNoising only the Side channel means that mono operation is entirely unaffected while stereo operation produces a cleaner stereo image without affecting the central sound. Secondly, recordings made with the Mid-Side microphone technique often have more noticeable noise in the Side signal because the Side signal is mainly ambiance. If the Mid-Side recording is then converted to Left /Right at some point,the Mid-Side mode of the DeNoiser allows you to de-noise just the Side content.