Description
Return frequency ratio and octave separation.
Audiological records depend on ear/channel identity, stimulus calibration, timing and decibel reference conventions. A local level difference or response share can reconcile supplied observations while hearing ability, safe sound output and clinical test interpretation require validated procedures and professional assessment.
Return frequency ratio and octave separation.
When to use this tool
Use Audiometric Frequency Step Ratio when checking the stated hearing-test record, acoustic level, frequency or timing convention.
How to use the tool and how it works
- Enter firstHz, secondHz. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read ratio, octaves. Use the output convention below.
Return frequency ratio and octave separation. Require both frequencies > 0; ratio = secondHz/firstHz, octaves = log2(second)-log2(first).1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| firstHz | First Hz | Required. Finite number; strictly above 0. |
| secondHz | Second Hz | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| ratio | Ratio | Required. Finite number. |
| octaves | Octaves | Required. Finite number. |
{
"input": {
"firstHz": 500,
"secondHz": 1000
},
"output": {
"ratio": 2,
"octaves": 1
}
}Limitations and assumptions
- Octave separation may be negative; no stimulus calibration, hearing threshold or appropriate test frequency is established.
- 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
Use calibrated equipment and a complete validated audiological method; consult an appropriate hearing-health professional for diagnosis, fitting or safe exposure decisions.
References
Similar or alternative tools
- Audiogram Frequency Axis Label Gap
Return a measured-to-labeled frequency gap.
- Audio Metric Frequency Octave Offset
Express a positive audiometric frequency relative to a positive reference in signed octaves.