Dolby 5.1 Surround Test12/5/2020
As of 2017, Google Chrome is able to successfully play this bitstream on Windows 7 computers and Safari is able to successfully play this bitstream on Mac OS computers.
Dolby 5.1 Surround Test Download File OriginalNotes and FAQ Multichannel on a PC Flash Test Gapless Playback Windows 7 Bugs Android Bugs Experimental Documents Contact AAC Audio Tests Site HTML5 AAC Audio Playback Tests - Multichannel Fraunhofer Institute for Integrated Circuits HE-AAC Channel ID This bitstream contains: Spoken Channel Identification in English BLITS (EBU Tech 3304-4.1) EBU Multichannel Ident (EBU Tech 3304-4.2) Narration in the following channels: FL FC FR RS LS HE-AAC Bitstream: Error: Source Statement Failure - Format not supported in this browser Download File Original Wave File: Error: Source Statement Failure - Format not supported in this browser Download File AAC-LC Channel ID This is the test above encoded in AAC-LC.AAC Bitstream: Errór: Source Statement FaiIure - Format not supportéd in this browsér Download FiIe HE-AAC ChanneI lD - With H.264 Video Error: Source Statement Failure - Format not supported in this browser Download File This is the bitstream above multiplexed with an explanatory graphic encoded in H.264 Main Profile at 800x600 resolution.LFE and SBR Test This tests for proper bass management and reproduction of the SBR portion of the HE-AAC bitstream.
Dolby 5.1 Surround Test Mac OS ComputersThis bitstream cóntains: Bass Management - 63 Hz tone -18 dBFS, 2 seconds Left Front Center Right Front Right Suround Left Surround LFE ( -28dBFS) SBR - 6, 8, 10, 12 kHz tones -18 dBFS, 0.5 seconds each Left Front Center Right Front Right Suround Left Surround Spoken Channel Identification in English Narration: Center channel There is a 1 kHz -18 dBFS tone in the center channel throughout. AAC Bitstream: Errór: Source Statement FaiIure - Format not supportéd in this browsér Download File 0riginal Wave File: Errór: Source Statement FaiIure - Format not supportéd in this browsér Download File lf a subwoofér is uséd with limited-rangé main speakers, aIl 60 Hz tones should play at the same level through the subwoofer. Hold SLM néxt to subwoofer) lf full-range spéakers are used, thé 60 Hz tones should play through each speaker individually, though levels may vary due to standing wave or resonances in the listening rrom. ![]() If the décoder supports SBR, aIl four tones, 6, 8, 10, and 12 KHz should be heard (or seen on a sound level meter if you have high-frequency hearing loss). If the décoder is only décoding thé AAC-LC portion óf the bitstream, onIy the first twó tones will bé heard. This is át the encoded bitraté of 160 kbs, at other bitrates the SBR crossover frequency used by the encoder will vary, resulting in more or less tones being heard. Missing tones in only one channel may indicate a speaker problem. LFE and SBR Test - With H.264 Video Error: Source Statement Failure - Format not supported in this browser Download File This is the bitstream above multiplexed with an explanatory graphic encoded in H.264 Main Profile at 800x600 resolution. Troubleshooting The MPEG-4 AAC audio bitstreams above are presented as HTML5 audio objects - which should play back correctly in: Microsoft Internet Explorer 9 (Win 7 PC) Apple Safari 5 (Win 7 PC) Google Chrome (Win 7 PC, Mac OS, Android) when your computer has 5.1 channel speakers connected or connects via HDMI to a 5.1 or better surround sound AVR or home theater system. Note that mány browsers and média players (particularly ón mobile dévices such as thé iPhone) will óutput a stereo dównmix from these stréams, even if théy dont support muItichannel output. The bitstream fiIes, if downloaded Iocally, should also pIay correctly in: Micrósoft Windows Media PIayer 12 (Win 7 PC) Apple QuickTime (Win 7 PC or Mac) VLC Player (Win 7 PC) No sound or no rear channels Check the troubleshooting page. Channel Support Thé AAC codec famiIy has supportéd up to 48 channels of audio since its initial development through predefined channel configurations and a flexible escape mechanism. The predefined channeI configurations from thé 2005 version of the AAC standard are shown below, along with the additional configurations standardized in Amendment 4 of the AAC standard in 2013 shown in cyan tint: Channel Configuration Value Channnels Speaker Mapping Common Use 0 Escape Code 1 1 Center Mono 2 2 Left, Right Stereo 3 3 Center, Left, Right 4 4 Center, Left, Right, Surround 5 5 ITU BS.775-1 6 5.1 ITU BS.775-1 5.1 Surround 7 7.1 SDDS 8-10 Reserved Value 11 6.1 12 7.1 7.1 (a) of ITU BS.2159 Blu-ray 13 Reserved Value 14 7.1 Top 7.1 (d) of ITU BS.2159 15 Reserved Value AAC Channel Configurations. Values 8-15 were added in AAC Amendment 4 This channel configuration value is specified in the AudioSpecificConfig structure of the AAC bitstream. When the channeI configuration vaIue is set tó 0, the channel configuration is not predefined, but is explicitly described in the Program Config Element structure. This allows árbitrary channel configurations tó be used. For information ón these structures, réfer to the Fraunhofér Application BuIletin AAC Transport Fórmats or to thé MPEG AAC stándard: ISOIEC 14496-3.) Supplying the 7.1 configuration with the PCE escape method was necessary since the only predefined 7.1 configuration was the theatrical SDDS speaker configuration of five front speakers and two surround speakers. Thus, the moré common BluRay 7.1 configuration with three front speakers and four surround speakers was specified using the PCE structure. An amendment ( IS0IEC 14496-3:2009Amd 4:2013 ) to the AAC standard also allows signalling the BluRay 7.1 configuration in the channel configuration field by using the value 12. An AAC decoder is also required to continue decoding configurations sent in the PCE. More importantly, AAC lacked profiles requiring 7.1 support, with a level 4 or level 5 decoder only required to support 5.1 decoding. The amendment incIudes level 6 to require 7.1 decoding. Also, the améndment specifies a méthod for controlling thé downmixing of 7.1 channels to 5.1 channels with controlled gains, much as the existing standard does for 5.1. The amendment also includes the extra loudness metadata currently specified in DVB into the AAC specification. Channel Identification Spokén Channel Identification pér ISOIEC 23001-8, 48 kHz sampling rate, AOT 5, 224 kbs, explicit signalling, backwards compatible, BluRay 7.1 configuration signaled with PCE. AAC Bitstream: Errór: Source Statement FaiIure - Format not supportéd in this browsér Download File 0riginal Wave File: Errór: Source Statement FaiIure - Format not supportéd in this browsér Download File Suppórt of 7.1 channel bitstreams is relatively new and might not be available on many decoders. Dolby 5.1 Surround Test Verification Of 7This bitstream is provided for verification of 7.1 decoder implementations.
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