Description
Subtract a supplied reference pressure from a tympanogram peak value.
Hearing records depend on frequency, laterality, masking status, calibration and level reference. A no-response label differs from a measured threshold, while an air-minus-bone gap requires comparable test conditions. Device charge arithmetic and scalar signal offsets do not establish hearing status or suitable care.
Subtract a supplied reference pressure from a tympanogram peak value.
When to use this tool
Use Tympanogram Peak Reference Offset when you already have referencePressure, measuredPeakPressure and need to subtract a supplied reference pressure from a tympanogram peak value.
How to use the tool and how it works
- Enter referencePressure, measuredPeakPressure. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedGap. Use the output convention below.
Return measuredPeakPressure-referencePressure with signs preserved.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| referencePressure | Reference Pressure | Required. Finite number. |
| measuredPeakPressure | Measured Peak Pressure | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedGap | Signed Gap | Required. Finite number. |
{
"input": {
"referencePressure": 12,
"measuredPeakPressure": 17
},
"output": {
"signedGap": 5
}
}Limitations and assumptions
- Use the same unit and pressure reference. No peak is located or ear condition or clinical acceptability inferred.
- 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 original audiograms, instrument settings, test records and the complete clinical context. Use an appropriate professional assessment for interpretation; local unit conversions and supplied labels do not choose tests, presentation levels or intervention.
References
Similar or alternative tools
- Tympanometry Pressure Unit Label
Label supplied tympanometry pressure and convert daPa to Pa.
- Test Tone Level Calibration Residual
Compare supplied measured and target tone levels.