Tape-Sync Drift
Measure tape-sync duration drift against a supplied tolerance.
Description
Tape-sync drift compares a synchronized duration with a reference duration.
Tape-sync drift compares a synchronized duration with a reference duration. Its signed value distinguishes a longer recording from a shorter one.1
Measure tape-sync duration drift against a supplied tolerance.
When to use Tape-Sync Drift
Use this tool to measure tape-sync duration drift against a supplied tolerance.
Prepare the text, recorded observations, aligned figures or editorial criteria requested. Confirm what each label, count, timestamp or supplied flag represents before interpreting the result.
How to use Tape-Sync Drift and understand its results
- Prepare the text, recorded observations, aligned figures or editorial criteria requested. Confirm what each label, count, timestamp or supplied flag represents before interpreting the result.
- Enter referenceDurationSeconds, syncedDurationSeconds, maximumDriftMilliseconds using the field table and calculation rules, then run the tool.
- Read driftMilliseconds, absoluteDriftMilliseconds, driftPartsPerMillion, withinTolerance. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| referenceDurationSeconds | Reference recording duration (s) | number; minimum: 0 | Required |
| syncedDurationSeconds | Synced recording duration (s) | number; minimum: 0 | Required |
| maximumDriftMilliseconds | Maximum drift (ms) | number; minimum: 0 | Required |
Enter positive reference seconds, nonnegative synced seconds and nonnegative tolerance ms. Return signed drift, relative drift and an inclusive absolute-drift gate.
driftMs=1000(synced−reference); ppm=1,000,000(synced−reference)/reference Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| driftMilliseconds | End-to-end sync drift (ms) | number |
| absoluteDriftMilliseconds | Absolute sync drift (ms) | number; minimum: 0 |
| driftPartsPerMillion | Duration drift (ppm) | number |
| withinTolerance | Within supplied tolerance | boolean |
{
"input": {
"referenceDurationSeconds": 100,
"syncedDurationSeconds": 100.01,
"maximumDriftMilliseconds": 20
},
"output": {
"driftMilliseconds": 10.000000000005116,
"absoluteDriftMilliseconds": 10.000000000005116,
"driftPartsPerMillion": 100.00000000005116,
"withinTolerance": true
}
}Limitations and assumptions
No media is synchronized, resampled or measured by the tool.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Midroll Spacing: Find podcast midroll placements that violate a supplied spacing minimum. For a complementary task, use Loudness Gain: Calculate loudness gain and projected true peak.
References
-
Tape-Sync Drift — tool.io
Similar or alternative tools
- Midroll Spacing
Find podcast midroll placements that violate a supplied spacing minimum.
- Loudness Gain
Calculate loudness gain and projected true peak.