Audio Speed Changer is an app to change the playback speed of an audio file in real time. This means you can play a song (or any other audio file) and speed it up or slow it down while you're listening to it.
You can create markers within the song itself, selecting different parts to make them play slower or faster than the rest of the track. Additionally, you can choose the percentage of speed you want to apply from the app's settings: from +100% speed, which is really FAST (and therefore, really high-pitched), to -100%, which will make it sound really slow and low-pitched.
The app is fully compatible with MP3 and WAV, the two most common audio formats you'll find on Android. On top of that, it also lets you load entire audio folders so you can, for example, insert all recordings made with your device.
Audio Speed Changer can be a very interesting app if you're looking to do some audio modifications. You can also get really funny effects by accelerating or slowing down the sound of your audio files.
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Very extraordinary