Specific Loudness Reference
Return the role of critical-band rate in the Zwicker loudness model.
Description
Specific loudness distributes a modeled loudness over critical-band rate.
Specific loudness distributes a modeled loudness over critical-band rate. Integrating that distribution gives total loudness under the selected model.1
Return the role of critical-band rate in the Zwicker loudness model.
When to use Specific Loudness Reference
Use this tool to return the role of critical-band rate in the Zwicker loudness model.
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 Specific Loudness 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 "definition", "integration", "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 "definition", "integration", "caution" |
{
"input": {
"topic": "definition"
},
"output": {
"source": "ISO 532-1:2017",
"statement": "Specific loudness distributes modeled loudness over critical-band rate, commonly expressed in sones per Bark.",
"topic": "definition"
}
}Limitations and assumptions
No spectrum, Bark pattern or ISO 532-1 loudness calculation is performed. 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 Acoustic Sharpness Reference: Return the definition, unit, reference sound, and interpretation cautions for psychoacoustic sharpness. For a complementary task, use Roughness 70 Hz Reference: Return the documented 70 Hz maximum of the 1-asp roughness reference while distinguishing that demonstration from a universal prediction.
References
-
Specific Loudness Reference — tool.io
Similar or alternative tools
- Acoustic Sharpness Reference
Return the definition, unit, reference sound, and interpretation cautions for psychoacoustic sharpness.
- Roughness 70 Hz Reference
Return the documented 70 Hz maximum of the 1-asp roughness reference while distinguishing that demonstration from a universal prediction.