Is this the same as resampling?
Mistake: Treating a result as valid outside the described scope.
Fix: No. Proper resampling preserves duration and pitch. Reinterpretation changes playback speed; use it only when that is the intended correction.
Calculators · Free
Sample-rate reinterpretation planner
Preview duration and pitch changes before an audio editor reinterprets a sample-rate header.
01Enter your values
Runs in your browserRuns offline in your browser. Once the page and required files have loaded, processing needs no internet.
02Sample-rate reinterpretation planner
Runs in your browser
How it works
Preview duration and pitch changes before an audio editor reinterprets a sample-rate header.
r = f₂/f₁; t₂ = t₁/r; Δp = 12log₂(r)
Runs in your browser
Discovery source
Your data stays yours
Inputs are processed on this page and are never sent to a server.
About this tool
Use tool ↑Preview duration and pitch changes before an audio editor reinterprets a sample-rate header.
Enter the currently interpreted rate, intended new rate and current playback duration. The sample count stays unchanged: speed is the rate ratio, duration changes inversely and pitch changes by 12 log₂ of that ratio. This planner does not read or modify audio files.
- Enter your values
- Current interpreted sample rate
- New interpreted sample rate
- Current duration
- Calculation method
r = f₂/f₁; t₂ = t₁/r; Δp = 12log₂(r)
- Example scenario · Result
New duration: 55.125 s
Calculation method
- Enter the currently interpreted rate, intended new rate and current playback duration.
- The sample count stays unchanged: speed is the rate ratio, duration changes inversely and pitch changes by 12 log₂ of that ratio.
- This planner does not read or modify audio files.
r = f₂/f₁; t₂ = t₁/r; Δp = 12log₂(r)
Sample-rate reinterpretation planner
- Current interpreted sample rate
- 44100 Hz
- New interpreted sample rate
- 48000 Hz
- Current duration
- 60 s
Result
New duration: 55.125 s
Frequently asked questions
Is this the same as resampling?
No. Proper resampling preserves duration and pitch. Reinterpretation changes playback speed; use it only when that is the intended correction.
Where does my data go?
Calculations run on your device. Form inputs are not sent to a server.
Terms and definitions
Enter your values
- Current interpreted sample rate
Enter the currently interpreted rate, intended new rate and current playback duration.
Enter a numerical value for this quantity. Use the unit shown beside this field. Hz
Minimum: 1 · Maximum: 10000000 Hz
- New interpreted sample rate
Enter the currently interpreted rate, intended new rate and current playback duration.
Enter a numerical value for this quantity. Use the unit shown beside this field. Hz
Minimum: 1 · Maximum: 10000000 Hz
- Current duration
Enter the currently interpreted rate, intended new rate and current playback duration.
Enter a numerical value for this quantity. Use the unit shown beside this field. s
Minimum: 0.000001 · Maximum: 1000000000 s
Result
- Result
Enter the currently interpreted rate, intended new rate and current playback duration. The sample count stays unchanged: speed is the rate ratio, duration changes inversely and pitch changes by 12 log₂ of that ratio. This planner does not read or modify audio files.
Calculated from your entries using the method below.
- Playback speed ratio
Enter the currently interpreted rate, intended new rate and current playback duration.
Calculated from your entries using the method below.
- Pitch change (semitones)
The sample count stays unchanged: speed is the rate ratio, duration changes inversely and pitch changes by 12 log₂ of that ratio.
Calculated from your entries using the method below.
- Duration difference
Enter the currently interpreted rate, intended new rate and current playback duration.
Calculated from your entries using the method below.
- Value
Enter the currently interpreted rate, intended new rate and current playback duration. The sample count stays unchanged: speed is the rate ratio, duration changes inversely and pitch changes by 12 log₂ of that ratio. This planner does not read or modify audio files.
Calculated from your entries using the method below.
Common mistakes and quick fixes
Limits and key assumptions
- No. Proper resampling preserves duration and pitch. Reinterpretation changes playback speed; use it only when that is the intended correction.
- This planner does not read or modify audio files.
- Displayed results may be rounded; rounding does not add measurement precision.