Assistive Listening Knowledge Base
  • International standard

IEC 61603-7:2003 Transmission systems of audio and/or video and related signals using infra-red radiation, Part 7: Digital audio signals for conference and similar applications

From https://assistivelisteningknowledgebase.org/evidence/iec-61603-7-2003/ · record checked 9 October 2026

  • IEC Technical Committee 100 (Audio, video and multimedia systems and equipment)
  • International Electrotechnical Commission (webstore abstract)

Standards body (International Electrotechnical Commission; the full text is sold, the abstract is free)

Summary

The international standard for digital multichannel infrared audio transmission, written for conference interpretation and similar uses; only its abstract and catalogue details are public.

Key findings

  • Describes the characteristics of a digital, multiple-channel, multiple-carrier infrared audio transmission system, as an extension of conference interpretation or similar systems.
  • Uses the subcarrier frequency ranges 45 kHz to 1 MHz and 2 MHz to 6 MHz.
  • First edition, published 22 May 2003 by IEC TC 100 (26 pages); the IEC webstore lists a stability date of 2040 and no revision under development.

Limits

Abstract and catalogue details only: the requirements are behind a paywall and were not read. It is framed for conference interpretation, which this site does not cover, and its abstract says nothing about assistive listening receivers, sunlight or lighting. Other parts of the series include Part 1 (general measurement methods) and Part 2 (wideband audio systems), both published in 1997, whose abstracts were also read on the IEC webstore.

Read the original

webstore.iec.ch/en/publication/5660

Link checked . We link to the original and do not host copies.

Cited in

Cite this source

IEC Technical Committee 100 (Audio, video and multimedia systems and equipment). IEC 61603-7:2003 Transmission systems of audio and/or video and related signals using infra-red radiation, Part 7: Digital audio signals for conference and similar applications. International Electrotechnical Commission (webstore abstract). 22 May 2003. https://webstore.iec.ch/en/publication/5660 (accessed 9 October 2026).

The accessed date is when this library last checked the link; use the date you read it. To point readers to this summary instead, link to https://assistivelisteningknowledgebase.org/evidence/iec-61603-7-2003/

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