T/CA 107-2019 Headphones and earphones associated with personal music players—Technical specification for maximum sound pressure level

Scope

This standard specifies the technical requirements and test methods for the maximum sound pressure level of headphones used by consumers and personal music players that can be connected to headphones. This standard applies to headphones used by consumers and personal music players that can be connected to headphones. This standard does not apply to high-fidelity home equipment powered by AC, monitoring headphones, medical headphones (for hearing difficulties, etc.), or headphones and bone conduction headphones used as part of active hearing protection devices. Note: Other safety requirements, such as noise protection in office or industrial environments, are not affected by this standard. The test methods given in this standard should be reproducible and applicable to every type and shape of headphones sold on the market (with good mechanical adaptability); considering safety and health, the test methods must accurately reflect the effective sound pressure level at the user's ear (with good correlation with subjective tests) to support protective measures against excessive sound pressure levels from personal music players. Protection against sound energy sources from telecommunications applications is referred to in ITUT P.360. This standard also specifies methods for measuring headphones provided separately, or headphones and personal music players provided as a set and connected via wired or wireless universal interfaces, in order to avoid hearing damage caused by excessive sound pressure levels. Compared to devices sold as a set, the sound pressure level received in the ear cannot be determined by a single condition, but requires at least two characteristic parameters, one for the player and one for the headphones, which are defined by the matching values of their connections.

Development Information

Referenced Standards

Related Standards