Sound and Vibration
ASHRAE Technical Committee 2.6

Tones in HVAC Systems, Jerry Lilly (Updated)

Review of Methods for Quantifying Tonalness in Noise, Lily Wang

Implementation of ISO 1996-2 (2007) Pure Tone Assesment in a Sound Level Meter, Greene Manvell, Scholz and Enggaard

The following standards discuss assorted metrics/issues for tones in noise:

ANSI S1.13-2005: Measurement of Sound Pressure Levels in Air
ANSI S3.4-2007: Procedure for the Computation of Loudness of Steady Sounds
ANSI/ASA S12.2-2008: Criteria for Evaluating Room Noise
ANSI/ASA S12.9-1993 Part 3 (R2008): Quantities and Procedures for Description and Measurement of Environmental Sound. Part 3: Short-term measurements with an observer present
ECMA 074 (December 2005): Measurement of Airborne Noise Emitted by Information Technology and Telecommunications Equipment Annex D
ISO 1996-2 (2007): Acoustics — Description, measurement and assessment of environmental noise — Part 2: Determination of environmental noise levels: Annex D (informative)-Objective method for assessing the audibility of tones in noise – simplified method)