STI Edition History
Return dated IEC 60268-16 edition context without treating editions as numerically interchangeable.
Description
Speech-intelligibility results need an identified method and edition.
Speech-intelligibility results need an identified method and edition. Changes in procedures can affect cross-study comparisons.1
Return dated IEC 60268-16 edition context without treating editions as numerically interchangeable.
When to use STI Edition History
Use this tool to return dated IEC 60268-16 edition context without treating editions as numerically interchangeable.
Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.
How to use STI Edition History and understand its results
- Choose a supported reference topic, run an input-free reference with an empty object, or prepare the measured values and caller-supplied test records requested. Keep acoustic metrics, frequency, units and test conditions consistent.
- Enter topic using the field table and calculation rules, then run the tool.
- Read source, statement, topic. 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 |
|---|---|---|---|
| topic | Reference topic to return. | string; one of "current", "earlier", "caution" | Required |
Choose an exact topic enum from the input table and run the lookup. The implementation selects a fixed local entry and returns source, statement and the selected topic. Matching is case-sensitive without trimming or free-text search.
result=stored entry for selected topic Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| source | Source used for the reference statement. | string |
| statement | Narrow reference statement for the selected topic. | string |
| topic | Selected reference topic. | string; one of "current", "earlier", "caution" |
{
"input": {
"topic": "current"
},
"output": {
"source": "IEC 60268-16:2020",
"statement": "IEC 60268-16:2020 is the fifth edition of the objective speech-intelligibility standard.",
"topic": "current"
}
}Limitations and assumptions
The current topic is the stored 2020 fifth-edition entry, not a live standards-status check. No edition equivalence is guaranteed. The source is a stored bibliographic label, not a fetched document; statements are not refreshed at runtime.
Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Extremely large text inputs are rejected. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Speech Transmission Index Method Reference: Summarize the scope and limitations of the standardized STI method. For a complementary task, use STI to CIS: Convert a positive Speech Transmission Index to Common Intelligibility Scale using CIS = 1 + log10(STI).
References
-
STI Edition History — tool.io
Similar or alternative tools
- Speech Transmission Index Method Reference
Summarize the scope and limitations of the standardized STI method.
- STI to CIS
Convert a positive Speech Transmission Index to Common Intelligibility Scale using CIS = 1 + log10(STI).