Slowed + Reverb Generator

Yes — it is 100% free with unlimited usage. Because digital signal processing runs locally in your browser via Web Audio DSP, there are no credits, subscription tiers, or login gates.

Slowing down playback simulates a classic analog turntable or tape deck where playing at a slower speed naturally stretches waveforms and drops the pitch. This gives slowed edits their signature heavy, nostalgic vocal texture. If you wish to separate pitch from tempo, expand the Advanced Settings to adjust the Pitch slider independently.

Slowed + Reverb reduces speed to ~0.80x with a lush 40% reverb wash; Daycore slows playback to 0.80x while dropping pitch an extra -2 semitones for a deep, ethereal sound; Nightcore speeds up playback to 1.20x with a +2 semitone rise and light reverb for an energetic, high-tempo vibe.

You can upload WAV, MP3, FLAC, OGG, M4A, AAC, and WMA files up to 20MB in size and 10 minutes in duration. Processing and real-time playback are instantaneous.

No. All decoding, playback modulation, and offline rendering occur exclusively within your local browser memory. Your audio files never touch any external server.

Yes, but please note that altering speed and reverb does not create new copyright ownership. You can freely use your own original music or royalty-free audio for social media, but copyrighted tracks remain subject to standard platform content-ID policies.