Published by PitchChanger · Updated · How these guides are made
How to use this workflow
Choose the final sample rate
Use the encoded output rate rather than assuming it matches the source.
Calculate the tail allocation
For an intended minimum tail length, round the frame count upward. Record this as a planning convention.
Check the actual export duration
A reverb decay setting describes the effect, not necessarily the number of seconds appended to an export. Inspect the rendered file separately.
A fractional-tail worksheet at 44.1 kHz
A planned 0.333-second tail requires 0.333 × 44,100 = 14,685.3 frames. Rounding upward gives 14,686 frames, lasting 0.333015873 seconds. For stereo that is 29,372 channel samples.
If an exact 10-second source has 441,000 frames, adding that allocation gives 455,686 frames, or 10.333015873 seconds. At 24-bit stereo PCM the tail payload is 14,686 × 2 × 3 = 88,116 bytes. These are original calculations, not tool-export measurements.
Swipe or scroll sideways to read all columns.
| Output rate | ceil(0.333 × rate) | Actual allocated seconds |
|---|---|---|
| 44,100 Hz | 14,686 frames | 0.333015873 |
| 48,000 Hz | 15,984 frames | 0.333000000 |
| 96,000 Hz | 31,968 frames | 0.333000000 |
Keep decay, padding and audible duration separate
A long quiet decay may be inaudible before the file ends. A noise floor can remain after a nominal decay time. The calculated buffer allocation does not certify a clean ending. Listen to the export’s last phrase and final silence.
Reverb & Delay has room, decay, pre-delay, high-cut and mix controls; it does not offer a custom tail-frame input. Use this worksheet to audit duration and storage, then use an external editor when a delivery requires an exact final frame count.