BS EN 61937-11 discusses digital audio and interface for non-linear PCM encoded audio bitstreams lying IEC 60958 with a focus on MPEG-4 AAC and its extensions in LATM/LOAS. Sound quality makes a noticeable difference to user experience, and users seek better sound quality features in the equipment.
BS EN 61937-11 is the 11th part of the multi-series on digital audio that describes the method to convey non-linear PCM bitstreams encoded according to the MPEG-4 AAC format and its extensions spectral band replication, parametric stereo, and MPEG surround, framed in MPEG-4 LATM/LOAS.
BS EN 61937-11 on the Digital audio interface to convey non-linear PCM bitstreams is useful for:
Modern digital video broadcasting standards such as DVB include support for the MPEG-4 HE AAC and/or HE AAC v2 audio codecs as specified in ISO/IEC 14496-3. An increasing number of countries are adopting these new codecs for their standard definition and high-definition digital video broadcasting services and have started with implementations.
BS EN 61937-11 specifies the data-burst for MPEG-4 AAC audio and its extensions in LATM/LOAS. Specific properties such as reference points, repetition period, the method of filling stream gaps, and decoding latency are specified.
BS IEC 61937‑11 discusses the mapping of the audio bitstream onto IEC 61937-1, format of data-burst for MPEG-4 AAC and its extensions in LATM/LOAS, pause data-bursts for MPEG-4 AAC and its extensions in LATM/LOAS, audio data-bursts, MPEG-4 AAC and its extensions in LATM/LOAS, and LATM/LOAS framing.
EN 61937-11:2010
IEC 61937-11:2010
IEC 62061:2005/AMD2:2015