OITC Reference
Return the scope and traffic-noise relevance of Outdoor-Indoor Transmission Class.
Description
Outdoor-Indoor Transmission Class uses a transportation-noise-oriented rating procedure.
Outdoor-Indoor Transmission Class uses a transportation-noise-oriented rating procedure. It differs from STC and cannot be converted by a fixed offset.1
Return the scope and traffic-noise relevance of Outdoor-Indoor Transmission Class.
When to use OITC Reference
Use this tool to return the scope and traffic-noise relevance of Outdoor-Indoor Transmission Class.
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 OITC Reference 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 "scope", "comparison", "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 "scope", "comparison", "caution" |
{
"input": {
"topic": "scope"
},
"output": {
"source": "ASTM E1332",
"statement": "OITC is a single-number rating derived from outdoor-indoor transmission-loss data over a spectrum intended to represent transportation noise.",
"topic": "scope"
}
}Limitations and assumptions
No transmission spectrum, OITC value or indoor sound level is calculated. 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 STC and NIC Metric Classifier: Classify a caller-supplied ASTM or ISO airborne-sound record as laboratory STC, field NIC, apparent ASTC, or the corresponding distinct rating without equating the metrics. For a complementary task, use Stud Wall STC Comparison: Compare a caller-supplied single-stud and double-stud laboratory STC pair, return the signed point difference, and preserve each test reference without treating the result as a universal construction rule.
References
-
OITC Reference — tool.io
Similar or alternative tools
- STC and NIC Metric Classifier
Classify a caller-supplied ASTM or ISO airborne-sound record as laboratory STC, field NIC, apparent ASTC, or the corresponding distinct rating without equating the metrics.
- Stud Wall STC Comparison
Compare a caller-supplied single-stud and double-stud laboratory STC pair, return the signed point difference, and preserve each test reference without treating the result as a universal construction rule.