Initial Audio has released Slowmo, an effect plugin which slows down the audio passed through it to half the speed in real time.
Especially in modern productions such as hiphop and trap halfspeed has become a common effect.
SlowMo´s built in oversampling makes sure the halfspeed version of your audio sounds as high quality as possible. The easy to use interface can be resized seamlessly to make it look great in every resolution in your daw.
- Turn on or off the effect.
- Set the loop time, which can be 1/2 bar, 1,2,4 or 8 bars.
- Dry/Wet to mix the effect with the original audio.
The plugin is available for Windows and Mac (VST/AU). It is currently on sale for $9.99 USD (regular $49.99 USD).
For a similar effect with more options I recommend checking out the HalfTime plugin by Cabelguys as well.
More information: Initial Audio