Free Vocal Doubler VST/AU Plugin Released By iZotope

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iZotope has introduced Vocal Doubler, a freeware vocal doubling effect in VST, VST3, AU, and AAX plugin formats for compatible digital audio workstations on PC and Mac.

Vocal Doubler sports a modern-looking user interface with a simple control scheme. The XY pad in the center of the interface controls both the amount of stereo separation and the modulation intensity of the doubled signal. The numerical value of both parameters is shown in the lower-left corner. The only other available controls are the mix knob, the solo button (which mutes the dry signal altogether), and the bypass switch for turning the effect on or off. While the user interface isn’t resizable, it is large enough for comfortable use on high-resolution screens.

While testing Vocal Doubler, my impression was that moderate amounts of stereo separation and modulation worked the best for doubling lead vocals. The doubling effect sounds convincing and natural with just the right amount of pitch drifting when the modulation amount is set to around 50%. However, more extreme settings can sound very good when used on synthesized instruments like pads and strings, or if you’re looking to create intentionally artificial sounding vocals.

The control scheme is convenient for the most part, although setting the stereo separation amount can be a bit fiddly when the modulation intensity is set to 0% or 100%. The plugin consumes around 7% of available CPU resources on our Core i7-powered test machine, which is a bit higher than expected for this type of effect. Still, the sound quality makes up for the somewhat high CPU usage.

To register and activate your free copy of iZotope Vocal Doubler, visit the product page linked below and click the GET VOCAL DOUBLER button. On the following page, enter your email address and you will receive the serial number needed for activation. Once the plugin is downloaded and installed on your computer, load it in your DAW of choice and enter the email address and serial number when prompted. The plugin will also show up in your iZotope user account for future reference.

Vocal Doubler is available for free download via iZotope (50.7 MB download size, EXE installer, 32-bit & 64-bit VST/VST3/AU/AAX plugin formats for Windows & macOS).

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About Author

Tomislav is a content creator and sound designer from Belgrade, Serbia. He is also the founder and editor-in-chief here at Bedroom Producers Blog.

8 Comments

  1. Thanks for pointing this out! Tried it with Cakewalk by Bandlab (formerly known as Sonar): sounds fine, but sure is CPU hungry (at least in my system).

  2. It seems this plugin is that it can never be completely dry, always causing some process even when all the controls are zeroed out. Odd.

  3. Isotope appears to offer some great stuff. Unfortunately, a lot of it does not work (or does not admit working) on Sonar, and I’m stubbornly resisting the thought of changing DAWs right now…

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