How can I put a voice changer on my computer audio output?
April 24, 2015 11:45 PM   Subscribe

Is there any software that can change the voice/filter the audio playback of your computer in real time?

I've found various voice changers for input in real time, but none for playback in real time. I like Voxal for input voice change, but there doesn't seem to be a way of altering the way I hear things. That seems counterintuitive. Maybe there's some terminology or methodology I'm missing here? I'd be interested in hardware options as well.

posted by dargerpartridge to Technology (5 answers total) 3 users marked this as a favorite
Have you tried Vox Changer by NCH? I haven't used it myself, but came across it when looking for something related.

The features list includes "Effects can be applied to existing files", which seems to match what you're looking for. There is a free demo, so you can see if it works for you.
posted by Gomez_in_the_South at 1:22 AM on April 25, 2015

Response by poster: That's not really what I'm looking for. I'm looking for something that can modify sound in real time. For example, I could play a song on Spotify, and listen to it through a filter that could alter the sound as I'm playing it. Does that make sense?
posted by dargerpartridge at 1:47 AM on April 25, 2015

Yes, that does make sense. They also mention: "Apply effects in real time to an audio input (e.g., microphone)".
In theory, a web browser or other source would also count as an input to the program (depending how they designed it). If it doesn't work out the box, perhaps you can find a separate piece of software that could make Spotify appear as a microphone input.
posted by Gomez_in_the_South at 4:14 AM on April 25, 2015

What specific effects are you looking to apply? You can apply processing to arbitrary audio from any DAW. Reaper has a fully-featured trial version and can host VST plugins (as well as AU plugins on Mac), and you can find free plugins for just about any imaginable type of audio processing in addition to the ones that come packaged with the software.
posted by ludwig_van at 6:48 AM on April 25, 2015

As already mentioned, there are a number of VST plugins that will work in a DAW that will transform voice audio in real-time. There are also a number for iOS (iVoxel, Harmony Voice, and Voice Synth come to mind, and I'm sure there are many others).

There's really no shortage of apps and programs to do real-time alteration on audio input - but perhaps what is causing you a problem is accessing the audio output from something like Spotify, so that you can run it into a VST or something? If so, there's a nice utility called Soundflower (Mac-only, I believe, but there may be a PC equivalent) which should allow you route the output audio from Spotify to anything you want. I haven't done this myself, and for all I know Spotify doesn't do Mac. But I'm guessing it does. Did I mention that Soundflower is free?
posted by doctor tough love at 12:22 PM on April 25, 2015

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