T/CECA 78-2022 Active Group standards

T/CECA 78-2022 Multi-porous sound absorbing particles for micro-speakers

Publish Date: 2022-12-27 Implement Date: 2022-12-31 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CECA 78-2022

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Audio equipment, electroacoustic devices

ICS Name: Attachment

Publish Date: 2022-12-27

Implement Date: 2022-12-31

Scope

Main technical content: This document specifies the structural characteristics, technical requirements, test methods, inspection rules, and packaging, transportation, and storage of porous sound-absorbing particles used in miniature speakers. This document is applicable to porous sound-absorbing particles with sizes ranging from 0.1 μm to 2,000 μm and different surface morphologies. For miniature speakers with sound-absorbing particles of other sizes, this document can be used for reference