Original audio
0:20- Speed
- 1.00×
- Reverb mix
- 0%
- Reverb tail
- 0 sec
Give your song a slower pace and a longer echo. Choose an audio file, adjust the sound, then preview and download your edit. Free, with no account or credits required.
Drop one audio file here, or choose a file
MP3, WAV or M4A · Up to 30 MB and 8 minutes · Mono or stereo
Both limits apply. For longer recordings, choose MP3 or M4A; uncompressed WAV files reach the size limit sooner. Longer edits also need more device memory.
Your audio stays in this browser. Audio and filenames are not uploaded. Tool interactions may be recorded for analytics as described in our privacy policy.
Lower speed also lowers pitch. This tool does not preserve the original pitch.
Keep it subtle for clear vocals, or increase it for a roomier sound.
Snow On An Empty Street · 00:30–00:50
This 20-second excerpt comes from a public MemoTune song example. Each edit uses the same source and this tool, with a short fade at the cut points. The settings below include the added reverb tail.
Listen to the original vocals and drums, then compare the three edits. More reverb makes the tail more noticeable, but can blur lyrics and rhythm. These examples show one recording; the best settings depend on your source.
Make a slower version of a recording you already have. Set the pace, shape the reverb, then hear the complete edit before saving it.
Try a gentle 0.95× edit or take the speed down to half time. Pitch follows speed, so a 0.50× recording plays an octave lower and lasts twice as long.

Blend 0–70% reverb and choose a tail from 0.5 to 5 seconds. Start with less reverb on dense tracks; increase the tail when you want more space around sparse vocals or instruments.

Generate a complete 44.1 kHz WAV preview, including the final decay. Download that same file when it sounds right. Changing a setting clears the old result so you cannot accidentally export an outdated mix.

Keep your recording on your device while you experiment. Choose one MP3, WAV or M4A file up to 30 MB and 8 minutes long; processing runs in this browser, so there is no audio upload or server queue.
Start with one recording and three sound controls. MemoTune keeps the processing and final file in your browser.
No account, subscription or credits are required to generate a preview and download its WAV.

Audio and filenames are not uploaded; tool interactions may be recorded as described in our privacy policy.

Start at 0.85×, 0.95× or 0.70×, then set speed, reverb mix and tail independently.

Preview and download use the same 44.1 kHz, 16-bit WAV, including the reverb tail.

Select or drop one MP3, WAV or M4A file up to 30 MB and 8 minutes long. Processing happens on your device, without uploading the recording.
Use the default slowed + reverb preset or change speed, mix and tail. Generate a preview, compare it with the original, and update the settings as needed.
Save the finished preview as a 16-bit WAV. Keep the tab open until the download begins; refreshing the page clears your unsaved audio.
Make an original song, isolate a part to edit, or explore the sound of lo-fi music.
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Work with your own music or recordings you have permission to edit. Slowing a track changes its timing and pitch; it does not grant permission to publish someone else’s music.
Try a slower version of your own demo to hear a different vocal register and pace. Compare it with the original before deciding which direction to take into your next session.
Give music you own or license more space for a reflective scene. Export the WAV and add it to your video editor, allowing for the longer running time and reverb tail.
Start with the gentle preset for a subtle change, or try extra slow for a lower, heavier sound. Keep the reverb light when you want the words and drums to stay distinct.
Work with your own music or recordings you have permission to edit. Slowing a track changes its timing and pitch; it does not grant permission to publish someone else’s music.
Learn how texture, tempo and arrangement contribute to a relaxed sound.

Choose a file, start with the default preset and listen to the result. No signup required.
Settings, supported files, privacy and what to expect from your edit.
The recording plays more slowly, its pitch drops, and reverb adds a decaying sense of space. The lyrics, instruments and song structure come from your original file. This is an audio effect rather than an AI cover or a newly composed track.
Start at 0.85× speed, 25% mix and a 2-second tail, which are the default settings here. Listen to a vocal phrase and a busy drum section. If words become hard to follow, lower the mix; if the edit feels too heavy, move the speed closer to 1.00×.
This tool changes speed and pitch together. It does not offer pitch-preserving time stretching. At 0.50× speed the recording is one octave lower; at 1.00× the original tempo and pitch remain, so you can add reverb alone.
Choose MP3, WAV or M4A files up to 30 MB, 8 minutes and 2 channels. The codec inside the file must be supported by your browser; protected or unusual files may fail. Downloads are 44.1 kHz, 16-bit WAV only. WAV can be larger than the source MP3 and does not restore quality already lost to compression.
The tool is free and requires no login, subscription or credits. Audio processing takes place in this browser, and audio bytes and filenames are not sent to MemoTune. Tool interactions may be recorded for analytics as described in our privacy policy. Refreshing or closing the page discards unsaved audio.
Decoded audio uses more memory than a compressed file, and slowing it down makes the result longer. A phone may run out of memory even when a file meets the size limit. Try a shorter recording, close other tabs, or use a desktop browser. The original file on your device is unchanged.
Only if you have the necessary rights to the original recording and composition. Slowing a song or adding reverb does not remove copyright or grant a commercial license. This tool changes the sound, not the ownership or platform rules that apply to it.