Published by PitchChanger · Updated · How these guides are made
How to use this workflow
Establish the reference
Keep an unchanged source and identify the passage or signal relationship described below.
Audition the boundary in context
Listen to the end of the preceding phrase and the next entrance before trimming. Use a comfortable level; do not turn headphones up sharply to hunt for noise. Leave a margin around breaths and decays, export a copy, and compare the saved ending with the source. A gap may be intentional timing even when its samples are zero.
Verify the saved result
Reopen the downloaded file and compare the relevant event with the source. Keep the source and the settings note for a later revision.
Calculate a quiet sample and a threshold
An illustrative normalized amplitude of 0.001 corresponds to 20 log10(0.001) = −60 dB relative to amplitude 1. It is nonzero. At 48 kHz, a quarter-second gap contains 12,000 frames; a display that compresses a long recording into a narrow view can hide events within it. These are calculations, not a measured silence threshold.
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| Item | Value or action | Meaning |
|---|---|---|
| Amplitude 0 | Exact zero | Digital silence for that sample |
| Amplitude 0.001 | −60 dB relative to 1 | Quiet but nonzero |
| 0.25 s at 48 kHz | 12,000 frames | Inspect the full interval |
Apply the result within the tool’s limits
The trimmer uses selected boundaries; it does not certify acoustic silence or automatically decide which pauses are musical. Compressed decoding may produce low-level values around a nominally silent region. Preserve the source if a later edit needs the removed context.
Common questions
Are the example numbers device test results?
No. Numerical examples and worksheets on this page are authored explanations. They do not measure your recording, browser latency or listening accuracy.