Audio troubleshooting - Revision history

NedBot: Bot: Automated text replacement (- XBMC + Kodi ); cosmetic changes

2015-05-04T08:25:57Z

Bot: Automated text replacement (- XBMC + Kodi ); cosmetic changes

Montellese: Typo

2014-07-31T06:43:26Z

Typo

← Older revision		Revision as of 06:43, 31 July 2014
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	===Check passthrough formats===		===Check passthrough formats===
	If you have the passthrough option available and it is enabled, then try disabling all the passthrough encoded audio formats such as Dolby Digital. ~~This~~ this fixes the problem then your system is not working with one of the passthrough types, there are then two things you can do:		If you have the passthrough option available and it is enabled, then try disabling all the passthrough encoded audio formats such as Dolby Digital. If this fixes the problem then your system is not working with one of the passthrough types, there are then two things you can do:

	* Check files with '''''[http://mediaarea.net/en/MediaInfo MediaInfo]''''' to see what type of audio they contain.		* Check files with '''''[http://mediaarea.net/en/MediaInfo MediaInfo]''''' to see what type of audio they contain.

Jjd-uk: /* Number of Channels */

2014-07-12T15:24:12Z

Number of Channels

← Older revision		Revision as of 15:24, 12 July 2014
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	===Number of Channels===		===Number of Channels===
	When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path, thus when you see the "Number of channels" setting in XBMC, this is the number of PCM channels.		When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path, thus when you see the "Number of channels" setting in XBMC this is the number of PCM channels.

	==Encoded Formats==		==Encoded Formats==

Jjd-uk: /* Number of Channels */

2014-07-12T15:23:43Z

Number of Channels

← Older revision		Revision as of 15:23, 12 July 2014
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	===Number of Channels===		===Number of Channels===
	When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path~~. Thus~~ when you see the "Number of channels" setting in XBMC, this is the number of PCM channels.		When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path, thus when you see the "Number of channels" setting in XBMC, this is the number of PCM channels.

	==Encoded Formats==		==Encoded Formats==

Jjd-uk: /* Check passthrough formats */

2014-07-12T15:20:18Z

Check passthrough formats

← Older revision		Revision as of 15:20, 12 July 2014
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	If you have the passthrough option available and it is enabled, then try disabling all the passthrough encoded audio formats such as Dolby Digital. This this fixes the problem then your system is not working with one of the passthrough types, there are then two things you can do:		If you have the passthrough option available and it is enabled, then try disabling all the passthrough encoded audio formats such as Dolby Digital. This this fixes the problem then your system is not working with one of the passthrough types, there are then two things you can do:

	* Check files with '''[http://mediaarea.net/en/MediaInfo MediaInfo]''' to see what type of audio they contain.		* Check files with '''''[http://mediaarea.net/en/MediaInfo MediaInfo]''''' to see what type of audio they contain.
	* Enable each format one at a time and test a file with that type of audio to see if a problem is encountered.		* Enable each format one at a time and test a file with that type of audio to see if a problem is encountered.
	* Look the the xbmc.log file, refer to '''[[log_file]]''', and towards the start you should see all the audio devices listed with it's properties.		* Look the the xbmc.log file, refer to '''''[[log_file]]''''' for how to find this and enable debug loging, and towards the start you should see all the audio devices listed with it's properties.

	====Interpret Log====		====Interpret Log====

Jjd-uk: /* Check volume */

2014-07-12T15:16:50Z

Check volume

← Older revision		Revision as of 15:16, 12 July 2014
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	===Check volume===		===Check volume===
	If audio type is PCM then volume needs to be ~~check~~. Check that mute is not on with the mute toggle {{keypress\|F8}} and also make sure volume is at maximum with {{keypress\|+}}.		If audio type is PCM then volume needs to be checked. Check that mute is not on with the mute toggle {{keypress\|F8}} and also make sure volume is at maximum with {{keypress\|+}}.

	===Check passthrough formats===		===Check passthrough formats===

NedBot: Robot: Substituting template: Name

2014-06-05T20:38:43Z

Robot: Substituting template: Name

← Older revision		Revision as of 20:38, 5 June 2014
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	=Background=		=Background=
	To understand how ~~{{name}}~~ processes audio you must first have a basic understanding of how audio in the digital domain works. This page will help guide you to understanding some basics in audio and how to troubleshoot basic audio issues.		To understand how XBMC processes audio you must first have a basic understanding of how audio in the digital domain works. This page will help guide you to understanding some basics in audio and how to troubleshoot basic audio issues.

	==Pulse Code Modulation (PCM)==		==Pulse Code Modulation (PCM)==
	When analog audio is converted into the digital domain the near universal format used is Pulse Code Modulation (PCM). All manipulation of audio in the digital domain is always done on audio in the PCM format, therefore functions in ~~{{name}}~~ such as volume control can only be done on PCM data, therefore if audio is in one of the Encoded Formats ~~{{name}}~~ must decode the audio to PCM in order to manipulate it for volume control.		When analog audio is converted into the digital domain the near universal format used is Pulse Code Modulation (PCM). All manipulation of audio in the digital domain is always done on audio in the PCM format, therefore functions in XBMC such as volume control can only be done on PCM data, therefore if audio is in one of the Encoded Formats XBMC must decode the audio to PCM in order to manipulate it for volume control.

	===Number of Channels===		===Number of Channels===
	When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path. Thus when you see the "Number of channels" setting in ~~{{name}}~~, this is the number of PCM channels.		When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path. Thus when you see the "Number of channels" setting in XBMC, this is the number of PCM channels.

	==Encoded Formats==		==Encoded Formats==
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	* '''Extension -''' is the additional data required for the audio to be lossless including a possible further 2 channels for a 7.1 audio stream.		* '''Extension -''' is the additional data required for the audio to be lossless including a possible further 2 channels for a 7.1 audio stream.

	The advantage of this type of encoding scheme is that equipment that can't decode the full DTS-HD MA will still be able to recognise the lossy Core DTS 5.1 stream. Thus in ~~{{name}}~~ if you deselect the DTS-HD option if using HDMI, or you are using SPDIF so that option is not available, then you will get DTS 5.1 out.		The advantage of this type of encoding scheme is that equipment that can't decode the full DTS-HD MA will still be able to recognise the lossy Core DTS 5.1 stream. Thus in XBMC if you deselect the DTS-HD option if using HDMI, or you are using SPDIF so that option is not available, then you will get DTS 5.1 out.

	* '''Pro -''' compatible with all equipment which supports DTS		* '''Pro -''' compatible with all equipment which supports DTS
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	* '''Con -''' equipment must be compatible with the format		* '''Con -''' equipment must be compatible with the format

	==What this means for ~~{{name}}~~?==		==What this means for XBMC?==
	~~{{name}}~~ has three modes of operation:		XBMC has three modes of operation:

	* '''Passthrough -''' This is where encoded audio types such as DTS are sent by ~~{{name}}~~ for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.		* '''Passthrough -''' This is where encoded audio types such as DTS are sent by XBMC for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.
	* '''Decode -''' This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.		* '''Decode -''' This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.
	* '''Transcode -''' This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, ~~{{name}}~~ does this by encoding the 5.1 audio into AC3 5.1.		* '''Transcode -''' This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, XBMC does this by encoding the 5.1 audio into AC3 5.1.

	=Troubleshooting (WIP)=		=Troubleshooting (WIP)=
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	== No HD Audio==		== No HD Audio==
	DTS-HD and TrueHD are not shown in the ~~{{name}}~~ settings.		DTS-HD and TrueHD are not shown in the XBMC settings.

	In order to pass HD audio there are several things required:		In order to pass HD audio there are several things required:

NedBot: Bot: Automated text replacement (-XBMC +{{name}})

2014-06-05T00:58:41Z

Bot: Automated text replacement (-XBMC +{{name}})

← Older revision		Revision as of 00:58, 5 June 2014
Line 4:		Line 4:

	=Background=		=Background=
	To understand how ~~XBMC~~ processes audio you must first have a basic understanding of how audio in the digital domain works. This page will help guide you to understanding some basics in audio and how to troubleshoot basic audio issues.		To understand how {{name}} processes audio you must first have a basic understanding of how audio in the digital domain works. This page will help guide you to understanding some basics in audio and how to troubleshoot basic audio issues.

	==Pulse Code Modulation (PCM)==		==Pulse Code Modulation (PCM)==
	When analog audio is converted into the digital domain the near universal format used is Pulse Code Modulation (PCM). All manipulation of audio in the digital domain is always done on audio in the PCM format, therefore functions in ~~XBMC~~ such as volume control can only be done on PCM data, therefore if audio is in one of the Encoded Formats ~~XBMC~~ must decode the audio to PCM in order to manipulate it for volume control.		When analog audio is converted into the digital domain the near universal format used is Pulse Code Modulation (PCM). All manipulation of audio in the digital domain is always done on audio in the PCM format, therefore functions in {{name}} such as volume control can only be done on PCM data, therefore if audio is in one of the Encoded Formats {{name}} must decode the audio to PCM in order to manipulate it for volume control.

	===Number of Channels===		===Number of Channels===
	When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path. Thus when you see the "Number of channels" setting in ~~XBMC~~, this is the number of PCM channels.		When number of channels is referred to, it will nearly always be the number of PCM channels that is meant. Since PCM is uncompressed audio this is a frequently used way of expressing the raw bandwidth for a particular audio path. Thus when you see the "Number of channels" setting in {{name}}, this is the number of PCM channels.

	==Encoded Formats==		==Encoded Formats==
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	* '''Extension -''' is the additional data required for the audio to be lossless including a possible further 2 channels for a 7.1 audio stream.		* '''Extension -''' is the additional data required for the audio to be lossless including a possible further 2 channels for a 7.1 audio stream.

	The advantage of this type of encoding scheme is that equipment that can't decode the full DTS-HD MA will still be able to recognise the lossy Core DTS 5.1 stream. Thus in ~~XBMC~~ if you deselect the DTS-HD option if using HDMI, or you are using SPDIF so that option is not available, then you will get DTS 5.1 out.		The advantage of this type of encoding scheme is that equipment that can't decode the full DTS-HD MA will still be able to recognise the lossy Core DTS 5.1 stream. Thus in {{name}} if you deselect the DTS-HD option if using HDMI, or you are using SPDIF so that option is not available, then you will get DTS 5.1 out.

	* '''Pro -''' compatible with all equipment which supports DTS		* '''Pro -''' compatible with all equipment which supports DTS
Line 51:		Line 51:
	* '''Con -''' equipment must be compatible with the format		* '''Con -''' equipment must be compatible with the format

	==What this means for ~~XBMC~~?==		==What this means for {{name}}?==
	~~XBMC~~ has three modes of operation:		{{name}} has three modes of operation:

	* '''Passthrough -''' This is where encoded audio types such as DTS are sent by ~~XBMC~~ for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.		* '''Passthrough -''' This is where encoded audio types such as DTS are sent by {{name}} for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.
	* '''Decode -''' This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.		* '''Decode -''' This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.
	* '''Transcode -''' This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, ~~XBMC~~ does this by encoding the 5.1 audio into AC3 5.1.		* '''Transcode -''' This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, {{name}} does this by encoding the 5.1 audio into AC3 5.1.

	=Troubleshooting (WIP)=		=Troubleshooting (WIP)=
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	== No HD Audio==		== No HD Audio==
	DTS-HD and TrueHD are not shown in the ~~XBMC~~ settings.		DTS-HD and TrueHD are not shown in the {{name}} settings.

	In order to pass HD audio there are several things required:		In order to pass HD audio there are several things required:

Jjd-uk: /* What this means for XBMC? */

2014-03-26T15:03:32Z

What this means for XBMC?

← Older revision		Revision as of 15:03, 26 March 2014
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	==What this means for XBMC?==		==What this means for XBMC?==
	XBMC has ~~this~~ modes of operation:		XBMC has three modes of operation:

	* '''Passthrough -''' This is where encoded audio types such as DTS are sent by XBMC for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.		* '''Passthrough -''' This is where encoded audio types such as DTS are sent by XBMC for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.

Jjd-uk: /* What this means for XBMC? */

2014-03-26T15:02:58Z

What this means for XBMC?

← Older revision		Revision as of 15:02, 26 March 2014
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	XBMC has this modes of operation:		XBMC has this modes of operation:

	* Passthrough ~~(bitstreaming)~~ - This is where encoded audio types such as DTS are sent by XBMC for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.		* '''Passthrough -''' This is where encoded audio types such as DTS are sent by XBMC for decoding elsewhere, typically a AVR, however the device the encoded audio is being sent to MUST be able to decode the audio format e.g. DTS.
	* Decode - This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.		* '''Decode -''' This is where the audio is decoded into PCM, this can be used where a format such as DTS can't be sent in it's encoded format so instead the audio is decoded into PCM.
	* Transcode - This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, XBMC does this by encoding the 5.1 audio into AC3 5.1.		* '''Transcode -''' This is used where multichannel audio needs to sent over a connection that only has 2 PCM channels, XBMC does this by encoding the 5.1 audio into AC3 5.1.

	=Troubleshooting (WIP)=		=Troubleshooting (WIP)=