Accusonus’s Room Tone Match plugin for AudioSuite was once part of the ERA Bundle collection, available in both version 5 and version 6. The plugin helped to fill gaps in ambience audio that were caused by ADR (dialogue replacement), making the noise floor of a recording more consistent, and reducing the signs of it having been edited.

What happened to Room Tone Match?

Since Accusonus was acquired in 2022, its software, including Room Tone Match, is no longer available to buy. Users looking for Room Tone Match will need to find a new  solution, and we’d like to recommend Undertone 2.

Try Undertone 2 – an Alternative to Room Tone Match

Our software was built specifically to match the room tone of a given scene. Whether you have a room tone recording or just an original dialogue audio sample, Undertone 2 can extract the tone and will output a constant bed for you to use or render.

To understand more closely how Undertone 2 works, check out this tutorial on getting started in just five minutes. Visit our dedicated Undertone 2 page to download or buy the software.

Room Tone Match but for VST, AU and AAX (not just AudioSuite)

Since it works in multiple plugin formats, Undertone 2 can replace the functions of Room Tone Match in various DAWs and NLEs like Premiere Pro and Da Vinci Resolve – not just in Pro Tools. Undertone does still work as an AudioSuite plugin as well, though.

What was Room Tone Match?

ERA 5 Room Tone Match was an AudioSuite plugin designed to work with Avid Pro Tools to make edited dialogue sound like one full and original take. 

When new dialogue is inserted into an existing recording, or one recording is edited and re-arranged, the ambient sound in the background may jump, change or even disappear, which gives a negative experience for viewers and listeners. Room Tone Match was able to take a dialogue recording with a variable noise floor and smooth it out.

Room Tone Match is now unavailable to buy and we recommend anyone looking for similar functionality investigate Undertone 2, a plugin made by us here at Audiokids.

How did Room Tone Match Work?

The plugin would have been loaded into Pro Tools on the channel in question. The user would then click Analyze in order to start the analysis of the noise floor, and the plugin would visualize the signals in the left and right audio channels.

Once the analysis was complete, the user could then activate the Room Tone Only setting and press play to test the room tone that had been defined by the plugin. There was also a Room Tone Gain parameter that let the user increase or decrease the signal level.

To render the background noise as a solo file, the user could click Render. It was also possible to render the new ambience over an existing clip with the plugin replacing the old one.

Accusonus Room Tone Match also had a selection of 19 ambiences that could be used as the background noise floor tone.

How can Undertone 2 Replace the Features of Accusonus Room Tone Match?

With Undertone 2, the process is different but similarly easy to Room Tone Match. Load the plugin on a new track in your DAW. You can use Pro Tools AudioSuite but you don’t have to – Undertone 2 works as a VST, AU and AAX plugin and so is supported by many other DAWs.

Load a sample into Undertone 2. This could be a dedicated noise floor recording, or could be a dialogue recording that contains some background ambience.

If your sample is a dedicated room tone recording, Undertone 2 will automatically process it and resynthesize it into a constant tonal bed of sound, which it should now be outputting. If your sample contains dialogue, then thanks to Undertone’s Unvoiced Auto Selection feature, it should have its noise floor (room tone) automatically selected for use, and should also be outputting a constant tonal bed of sound.

You can use this sound output for recording in order to fill gaps, or you can render it to an audio track in pro tools using the AudioSuite Render function.

How is Undertone 2 Different to Room Tone Match?

While both plugins were designed to fulfil practically the same basic remit, there are differences between Accusonnus Room Tone Match and Undertone 2.

• Room Tone Match functions as an AudioSuite plugin (for Pro Tools users) only
• Undertone 2 runs as a VST, AU and AAX plugin, and also has an AudioSuite version.
• Room Tone Match has an option to output only room tone. Undertone does this as standard.
• Undertone 2 uses two methods of generating room tone: granular and convolution
• Undertone 2 offers more control over its resynthesis of room tone, so you can customize the output
• Undertone 2 also includes Multi mode, where you can load multiple samples and load each with probability settings

More on Undertone 2

Our software makes it easy to generate room tone and ambience from either dedicated room tone files or recorded dialogue with ambience behind it. Perfect for ADR and other dialogue editing duties, Undertone can save audio editors time and frustration in post production.

Take a closer look at Undertone here.