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1.
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Clear description of the referenced document:
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Name:
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ECMA-418-2
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Title:
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Psychoacoustic metrics for ITT equipment, Part 2 (methods for describing human perception based on the Sottek Hearing Model)
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2.
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Status of approval:
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June 2025
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3.
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Justification for the specific reference:
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The reference specifies a method to determine perceived loudness and tonality, which is a suitable measure to detect tonal components in idle noise floors.
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4.
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Current information, if any, about IPR issues:
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Not applicable, the specification is freely accessible.
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5.
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Other useful information describing the "Quality" of the document:
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The method described in the referenced document is already used to quantify the degree of tonal signal components of ITT parts like e.g., cooling fans. The underlying loudness model is also used in the field of quality prediction.
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6.
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The degree of stability or maturity of the document:
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Mature, available already in 4th edition.
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7.
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Relationship with other existing or emerging documents:
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Could be useful also for Recommendations dealing with any acoustic test setup, like e.g., P.340.
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8.
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Any explicit references within that referenced document should also be listed:
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None.
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9.
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Qualification of
ECMA International:
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Qualification of ECMA: ECMA was recognized under the provisions of ITU-T Recommendation A.5 on 21 December 2000. Qualifying information is on file with TSB.
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10.
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Other (for any supplementary information):
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