Description
Calculate nominal playback runtime at a supplied speed multiplier.
Accessibility records distinguish requested support, recorded barriers, display choices and measured local geometry. Six-dot permutations depend on array orientation, angular text size depends on viewing geometry, and playback speed changes nominal runtime. These operations do not establish accessible communication, consent, legibility or compliance for an individual or environment.
Calculate nominal playback runtime at a supplied speed multiplier.
When to use this tool
Use Accessible Audio Speed Runtime Ratio when you already have originalRuntimeMinutes, suppliedPlaybackSpeed and need to calculate nominal playback runtime at a supplied speed multiplier.
How to use the tool and how it works
- Enter originalRuntimeMinutes, suppliedPlaybackSpeed. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read playbackRuntimeMinutes, runtimeRatio. Use the output convention below.
Require originalRuntimeMinutes>=0 and speed positive/finite; runtime=original/speed and runtimeRatio=1/speed.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| originalRuntimeMinutes | Original Runtime Minutes | Required. Finite number; minimum 0. |
| suppliedPlaybackSpeed | Positive playback-rate multiplier; 2 means twice the speed and half the nominal runtime. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| playbackRuntimeMinutes | Playback Runtime Minutes | Required. Finite number. |
| runtimeRatio | Runtime Ratio | Required. Finite number. |
{
"input": {
"originalRuntimeMinutes": 60,
"suppliedPlaybackSpeed": 1.5
},
"output": {
"playbackRuntimeMinutes": 40,
"runtimeRatio": 0.6666666666666666
}
}Limitations and assumptions
- The multiplier is playback speed, not a percentage reduction. No audio is changed and no comprehension, accessibility preference or safe listening level is evaluated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Review the person's recorded preferences and actual resource or route with the complete accessibility requirements. Test the relevant output and physical arrangement directly; a display token, scalar clearance or nominal playback ratio does not verify suitability or access.
References
Similar or alternative tools
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