Playing the same audio as stereo pcm to the same amp from the hdmi output of a mac running macos 10. Mpeg4 aac and its extensions in latmloas iec 61937 11. Iec619372 digital audio interface for nonlinear pcm. July 2017 digital audio interface for nonlinear pcm encoded audio bitstreams applying iec 60958 part 3. Interface for nonlinear pcm encoded audio bitstreams applying iec 60958. Nonlinear pcm bitstreams according to the ac3 and enhanced ac3 formats. Consolidated editions the iec is now publishing consolidated versions of its publications. Nonlinear pcm bitstreams according to the atrac, atrac23 and atracx formats general information. Digital system interfaces, of iec technical committee 100.
Another common use is to carry two channels of uncompressed digital audio from a cd. This second edition cancels and replaces the first edition published in. Wm877 wm8777 iec 61937 3ah01 bass treble using 1458 5. Iec international standards and conformity assessment. This mode is used to connect the output of a dvd player or computer, via optical or coax, to a home theatre amplifying receiver that supports dolby digital or dts.
With the increase in media storage devices that require compressed audio formats, applications must identify, describe, and use a variety of new encoded audio content for transmitting content from pcs to devices such as hdmi or displayport receiver. Pdf wm8777 24bit, 192khz wm8777 24bit jstd020b wm877 iec 61937 3ah01 bass treble using 1458 5. This second edition cancels and replaces the first edition published in 2002. For switchgear combinations the standard iec 604391 is referred to that is in effect at issuance of this document. This third edition of iec 61937 3 cancels and replaces the second edition published in 2007. Ac3 and dts encapsulated as stereo pcm, is not detected as encoded audio at the amp and so only noise is heard.
The object of iec is to promote international cooperation on all questions concerning standardization in the electrical and electronic fields. This second edition of iec 61937 2 cancels and replaces the first edition published in 2000. For example, iec 341 is now referred to as iec 600341. A 15% discount of the total catalogue price is included. Nonlinear pcm bitstreams according to the atrac, atrac23 and atracx formats. It is expected that iec 614391 will shortly replace iec 604391. International standard iec 61937 1 has been prepared by technical area 4. Digital system interfaces and protocols, of iec technical committee 100. International standard iec 61937 2 has been prepared by technical area 4, of iec technical committee 100.
A common use for the spdif interface is to carry compressed digital audio for surround sound as defined by the standard iec 61937. This second edition of iec 61937 1 cancels and replaces the first edition published in 2000. International standard iec 61937 3 has been prepared by technical area 4. As from 1 january 1997 all iec publications are issued with a designation in the 60000 series. The statements in the present documentation for switchgear assemblies also apply for iec 614391. For the purposes of this document, the definitions given in iec 61937 1 and iec 61937 2, as well as the following, apply.
Mpeg4 aac and its extensions in latmloas international electrotechnical commission p ics 33. It describes the way in which this digital interface can be used in consumer applications. Iec 61937 pdf iec amd standard amendment 1 digital audio interface for nonlinear pcm encoded audio bitstreams applying iec. This part of iec 61937 applies to the digital audio interface using the iec 60958 series for the conveying of nonlinear pcm encoded audio bitstreams. Iec 61937 1 1 digital audio interface for nonlinear pcm encoded audio bitstreams applying iec 60958 part 1. Representing formats for iec 61937 transmissions maximum rate in an audio frame is bps. Figure 2 databurst with mpeg1 layer 2 or 3 or mpeg2 without extension. This standard cancels and replaces iec 61937, published in 2000, which has been divided into four parts see below. Playing iec 61937 audio as stereo pcm not decoded at hdmi. Digital audio interface for nonlinear pcm encoded audio bitstreams applying. This standard specifies burstinfo which defines content information about the data contained in the burst payload. Ec 609583 1 iec 609584 1 iec 61937, iec 62105 and others 1 1 smpte 337m and others for that part of the channel status that is not implemented, the default is logical 0 11 is iec 609581. Nonlinear pcm bitstreams according to the mpeg2 aac and mpeg4 aac formats 1 scope this part of iec 61937 specifies the method for iec.
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