DeNoiser

Hollywood-grade dialog and voice cleaning 

For more than five decades, Harrison Audio has shaped the sound of cinema. From the pioneering MPC (Motion Picture Console) series to the mixing stages behind countless blockbusters, Harrison has been at the heart of films such as Indiana Jones, Spider-Man, James Bond, and Jurassic Park, as well as modern classics like Harry Potter, Bohemian Rhapsody, and Ford v Ferrari. Audio production for film, television, and content creation are crafts Harrison has perfected. From crystal clear dialogue to immersive, cinematic music, our technology has shaped the sound of Hollywood for decades. Now, with the Harrison DeNoiser plug-in, that same world-class expertise is in your DAW - delivering lightning-fast, artefact-free noise reduction with the precision professionals demand and the effortless simplicity creators rely on.

Harrison DeNoiser is an audio repair plug-in for rapid, transparent clean‑up of dialogue, voice, and vocals suffering from poor signal‑to‑noise ratios and common environmental issues. Choose from 5 Denoise Ranges and 4 Signal‑to‑Noise options to quickly hone in on the problem. Then use the six multiband Gain Reduction sliders and an intuitive real‑time visualizer to tailor the response to your source. Purpose‑built presets get you to a solution in seconds; the detailed controls keep you in full control.

Features

• Zero‑Latency Performance – Real‑time processing with 0 samples latency for live, broadcast, and fast‑turn post.
• Fast, Focused Control – Five denoise ranges, four SNR modes, and six multiband sliders for precise, frequency specific processing.
• Natural Sound – Removes noise while preserving timbre and clarity—no “underwater” artefacts.
• Instant Visual Feedback – Real‑time display of input, noise fingerprint, and gain reduction.
• Get cleaning fast – Ready‑made presets for common noise problems.

Post‑production & film / content audio mixing


Turn noisy production audio into pristine dialogue

• ADR and production dialogue clean‑up
• Matching takes across rooms and locations
• Removing heating, ventilation, and air Conditioning, hum, traffic, 
• Camera/floor noise
• Add clarity to interview and documentary audio

Broadcast & streaming

Deliver crystal clear speech on air

• Deliver consistent, intelligible speech
• Live newsroom hits, remote contributor feed clean‑up
• On‑the‑fly reduction of venue and crowd ambience

Live sound


Keep the show clean - without adding latency

• Stage, worship, and corporate: reduce venue rumble and air‑handling noise without adding latency
• Improve head worn and Lav mic intelligibility in reflective, or poor acoustic spaces

Music creation & production


Rescue vocals and samples from noise without killing the vibe

• Denoise home‑recorded vocals and voiceovers
• Reduce hiss and room tone between phrases
• Rescue archival and sample‑based sources

DeNoise Range

Six ratio buttons select the frequency range where DeNoiser should focus its processing. Selecting a specific range will allow DeNoiser to leave certain frequency ranges untouched which is optimal if they contain no offending noise. The options and their corresponding frequency ranges are: 

• Full Range: 20-18kHz 
• High: 4k-18kHz 
• High Mid: 200-18kHz 
• Mid: 200-6kHz 
• Low Mid: 20-6kHz 
• Low: 20-400Hz 

Signal to Noise Ratio (SNR)

Four controls determine how aggressive DeNoiser will work based on the amount of undesired noise in the signal. 

• Good: For use with signals that contain common background hiss. 
• Fair: When the background hiss is higher than average. 
• Poor: When other types of noise are also in the signal, such as wind. 
• Awful: When there is lots of undesirable background noise - this is the most aggressive setting. 

Dynamic Spectrum Display

The Dynamic spectrum display shows the magnitude of the program material, detected noise, and applied gain reduction overlaid simultaneously. This trio of displays allows you to detect and fix even the ugliest noise issues with minimal effort. The displays use the following color coding: 

• Green: Input Signal FFT 
• Green Line: Detected Noise Fingerprint 
• Red: Gain Reduction 

Gain Reduction sliders

Each of the six sliders adjusts the amount of gain reduction in an associated band of frequencies. Lowering the sliders increases the amount of gain reduction for the bands from 0 to -24dB with actual values shown in the associated windows above each slider. 

Below each slider is a "power" button which can be used to enable and disable the associated slider. Toggling this button can help you quickly compare the impact of a gain reduction slider on DeNoiser's processing. 

Above the sliders is a "Clear All" button which, when clicked, resets all Gain Reduction Sliders back to 0dB.