Audio settings

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Home icon grey.png   TriangleArrow-Right.svg Audio TriangleArrow-Right.svg Audio settings

This page is a listing of all of XBMC's audio output settings with descriptions.

Settings - Audio Output.png


Setting Description Setting Level Device type
Audio Output Device Select the device to be used for playback of audio that has been decoded such as mp3 Standard All
Number of channels Select the number of channels supported by the audio connection, or the number of speakers if connected by analog connections. Note - Number of channels is expressed as the number of PCM channels that the audio connection support, so although SPDIF only supports 2.0 PCM channels it can still output multichannel 5.1 audio using a compressed format such as Dolby Digital. This setting does not apply to passthrough audio. Basic HDMI/Analog-Speakers
Output configuration Fixed Select how the properties of the audio output are set:

[Fixed] - output properties are set to the specified sampling rate & speaker configuration at all times
[Optimized] - output properties are set at the start of playback and will not change if the properties of the source changes
[Best Match] - output properties are set to always be as close a match to the source properties as possible

Advanced All
Optimized
Best Match
Limit sampling rate (kHz) Maximum sampling rate for spdif or sampling rate for fixed output configuration Advanced SPDIF
Stereo upmix Select to enable upmixing of 2 channel audio to the number of audio channels specified by the channel configuration Advanced All
Normalize levels on downmix Select how audio is downmixed, for example from 5.1 to 2.0:

[Enabled] maintains the dynamic range of the original audio source when downmixed however volume will be lower
[Disabled] maintains volume level of the original audio source however the dynamic range is compressed. Note - Dynamic range is the difference between the quietest and loudest sounds in a audio source

Advanced All
Resample quality Low Select the quality of resampling for cases where the audio output needs to be at a different sampling rate from that used by the source

[Low] is fast and will have minimal impact on system resources such as the use of the CPU
[Medium] & [High] will use progressively more system resources

Advanced All
Medium
High
Keep audio device alive Select the behaviour when no sound is required for either playback or GUI sounds:

[Always] - continuous inaudible signal is output, this keeps the receiving audio device alive for any new sounds, however this might also block sound from other applications
[1- 10 Minutes] - same as Always except that after the selected period of time audio enters a suspended state
[Off] - audio output enters a suspended state. Note - sounds can be missed if audio enters suspended state

Standard All
Play GUI sounds Configure how interface sounds are handled, such as menu navigation and important notifications Basic All
Enable passthrough Select to enable the passthrough audio options for playback of encoded audio such as Dolby Digital Advanced HDMI/SPDIF
Passthrough output device Select the device to be used for playback of encoded formats, these are any of the formats below in the 'capable receiver' options Advanced HDMI/SPDIF
Dolby Digital (AC3) capable receiver Select this option if your receiver is capable of decoding AC3 streams Advanced HDMI/SPDIF
- Enable Dolby Digital transcoding Select this if the audio out connection only supports multichannel audio as Dolby Digital 5.1, such as an SPDIF connection. If your system supports LPCM multichannel sound via HDMI then leave this disabled. This option is only available where the number of channels is 2.0, for SPDIF this is set automatically so this option is always available, if using HDMI then you may need to change the Number of Channels setting to 2.0. Advanced HDMI/SPDIF
Dolby Digital Plus (E-AC3) capable receiver Select this option if your receiver is capable of decoding E-AC3 streams Advanced HDMI
DTS capable receiver Select this option if your receiver is capable of decoding DTS streams Advanced HDMI/SPDIF
TrueHD capable receiver Select this option if your receiver is capable of decoding TrueHD streams Advanced HDMI
DTS-HD capable receiver Select this option if your receiver is capable of decoding DTS-HD streams Advanced HDMI
IMPORTANT NOTE:

The "capable receiver" options relate only to the passthrough of audio to another device such as an AVR, where that device must support decoding of the format. Before leaving any "capable receiver" option enabled check to make sure that both the playback device running XBMC (e.g. HTPC) and the connected device (e.g. AVR) both support that format.

If you have a "capable receiver" option enabled that your device does not support then this will result in poor playback of video typically with a very low frames-per-second and no audio, so for example if the TrueHD capable receiver option were enabled then make sure that the playback device can passthrough TrueHD and that the connected device can decode TrueHD, if either of the devices do not support TrueHD then the TrueHD capable receiver option MUST be left disabled.

For any format where the "capable receiver" option is not selected, XBMC will still playback any content containing those audio types, however instead of the audio being passed through, XBMC will decode audio and then send the audio in a compatible format.

If connected directly to a TV be aware that TV are not compatible with DTS, TrueHD or DTS-HD, typically the only encoded format a TV will be compatible with is AC3.


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