Cordless Audio Devices

Introduction

Cordless audio devices are widely used in the entertainment industry they include such items as professional radio microphones, cordless audio distribution, foldback and talkback systems. They also include low-cost licence-exempt consumer radio microphones, audio systems used by tour guides, and aids for disabled people.

Devices such as radio microphones are small and highly mobile. Since the professional versions tend to be moved to different parts of the world, they need to meet local regulations, and the best way to achieve this is for them to be specified at a world-wide level.



Our Role & Activities

Global harmonization

The Global Standards Collaboration (GSC) of which ETSI is a partner, has studied requirements for radio microphones and cordless audio equipment in Standards Organizations throughout the world and adopted a report including globally-acceptable specifications for these products. Participating Standards Organizations were requested to transpose these specifications into their own deliverables. ETSI has done this by adapting the existing standards to align them with the decisions of GSC.

Responding to market needs

Another example of ETSIs work in this area concerns cordless audio devices using VHF Band II. A number of devices (e.g. portable music players) have been developed which contain a very low-power FM broadcast transmitter to send music to a user's radio receiver on an unused channel typically, this would permit a user to play their MP3 player through their car radio. However, current legislation does not allow the operation of such equipment in European countries, but ETSI has been working with CEPT to develop a standard to allow such operation without causing harmful interference to licensed broadcast services. This has now been incorporated into the relevant standard, EN 301 357 (cordless audio devices).



Standards

The following is a list of recently published and frequently downloaded standards. Please use the ETSI Work Programme to find further related standards.

Standard No.Standard title
EN 301 357-1 Cordless audio devices in the range 25 MHz to 2 000 MHz;
Part 1: Technical characteristics and test methods
EN 301 357-2 Cordless audio devices in the range 25 MHz to 2 000 MHz;
Part 2: Harmonized EN covering essential requirements of article 3.2 of the R&TTE Directive
EN 301 489-9 ElectroMagnetic Compatibility (EMC) standard for radio equipment and services;
Part 9: Specific conditions for wireless microphones, similar Radio Frequency (RF) audio link equipment, cordless audio and in-ear monitoring devices
TS 102 192-1 International Technical Characteristics and Test Methods;
Part 1: Wireless/Radio Microphones in the 25 MHz to 3 GHz Frequency Range
TS 102 192-2 International Technical Characteristics and Test Methods;
Part 2: Cordless audio and Consumer radio microphones in the 25 MHz to 3 GHz Frequency Range
EN 301 649 DECTTM Packet Radio Service (DPRS)
EN 301 840-1 Digital radio microphones operating in the CEPT Harmonized band 1 785 MHz to 1 800 MHz;
Part 1: Technical characteristics and methods of measurement
EN 301 840-2 Digital radio microphones operating in the CEPT Harmonized band 1 785 MHz to 1 800 MHz;
Part 2: Harmonized EN under article 3.2 of the R&TTE Directive
EN 300 422 Technical characteristics and test methods for wireless microphones in the 25 MHz to 3 GHz frequency range
EN 300 454 Wide band audio links
Part 1: Technical characteristics and test methods
Part 2: Harmonized EN under article 3.2 of the R&TTE Directive