Published by PitchChanger · Updated · How these guides are made
Hear the difference
Follow the source, isolated sound and actual reversed export.
Pause your workspace preview before comparing these clips.
Synthetic source; excerpt and reversal exported through the real tools.
How to use this workflow
Save an isolated excerpt
In Audio Trimmer, select the complete sound including its tail. Preview and download WAV.
Reverse the saved excerpt
Open Reverse Audio, load the trimmed WAV, select Reverse audio and download the completed result.
Place it externally if needed
Use another editor to insert or replace the reversed excerpt in a larger project. Keep the source and note the original selection boundaries.
Trim first so the reversal has the intended scope
Reversing a whole recording changes the order of all its sounds. If you only need one hit, word or texture, narrowing the file first makes the operation’s scope explicit. The trimmer selects one continuous interval; Reverse Audio reverses every channel of whatever file you load.
Keep the sound’s decay if you want it to become an approach into the reversed attack. Trimming too tightly can remove that useful ramp. The workflow does not restore a tail that was missing from the original recording.
An actual one-second excerpt from a three-event fixture
Our authored four-second source has three short decaying tones beginning at 0.400, 1.200 and 2.900 s. The actual trimmer export keeps Start = 1000 ms through End = 2000 ms with no fades. Only the middle event lies in that interval.
We loaded that saved one-second WAV into the real Reverse Audio tool and downloaded the result. Both excerpt and reversed export contain 48,000 frames at 48 kHz. The other two source events are absent because they were outside the trim, not because the reverse tool recognized or removed them.
Swipe or scroll sideways to read all columns.
| File | Duration | Included events |
|---|---|---|
| Original fixture | 4.000 s | Three |
| Trim 1.000–2.000 s | 1.000 s | Middle only |
| Reversed excerpt | 1.000 s | Middle event in reverse |
Calculate where a known frame moves
For an excerpt with N frames, reversal maps source frame i to N − 1 − i. The middle event begins 0.200 s into our one-second excerpt, at frame 9,600. That frame moves to 47,999 − 9,600 = 38,399, or approximately 0.799979 s.
This calculation identifies one frame, not the perceived peak of the reversed sound. Its original decay approaches that point from earlier in the reversed excerpt. The half-open selected interval and the final frame explain why the formula uses N − 1 rather than simply N.
Putting the sound back requires a timeline editor
The downloaded result is a standalone excerpt. This site does not automatically replace the source’s 1–2 s region, keep earlier events in place or mix the reversed sound over an existing track. For those tasks, import the file into an external editor and align it deliberately.
Check both joins in the final arrangement and audition a short fade if an abrupt edge clicks. If you choose MP3 for sharing, make it from the checked WAV and retain the WAV for later edits. Reversal alone cannot undo prior lossy compression, missing audio or trimming.
Common questions
Can I reverse only the selection inside Reverse Audio?
No. The tool reverses the full loaded file. Export your selected excerpt first.
Does reversing change duration?
This operation reverses sample order while keeping the excerpt’s sample rate and frame count.