Audio system - Revision history

Great Joe: /* minijack port */Added a fix for using newer TRRS headphones. Breaks mic compatibility though.

2017-09-06T10:03:09Z

minijack port: Added a fix for using newer TRRS headphones. Breaks mic compatibility though.

← Older revision		Revision as of 10:03, 6 September 2017
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	===Headset Compatibility===		===Headset Compatibility===
	*At first glance, Nokia headsets are compatible.[http://boards.openpandora.org/index.php?/topic/245-four-conductor-headset-alsa-setting-asoundrc/]		*At first glance, Nokia headsets are compatible.[http://boards.openpandora.org/index.php?/topic/245-four-conductor-headset-alsa-setting-asoundrc/]
	*Apple, LG and Samsung ~~seems not~~.~~working~~.		*Apple, LG and Samsung don't work correctly, since the mic and ground pins are reversed. If you don't care about using a mic you can fix this by shorting them out with solder - they're labeled 3 and 4 in the hacking guide.

	== Adjusting volume ==		== Adjusting volume ==

Reddev: /* Microphone testing */

2014-06-13T17:47:58Z

Microphone testing

← Older revision		Revision as of 17:47, 13 June 2014
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	=== Microphone testing ===		=== Microphone testing ===
	[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]		[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]
	#"arecord -f cd -D ~~hw0~~,1 lolcat.wav" <br /><br />		#"arecord -f cd -D hw:0,1 lolcat.wav" <br /><br />
	#ctrl+c<br /><br />		#ctrl+c<br /><br />
	#"aplay lolcat.wav" you should now hear what you recorded.		#"aplay lolcat.wav" you should now hear what you recorded.


	=== other soundcards ===		=== other soundcards ===

Kingu: should not be ctrl+z, should be ctrl+c.

2014-01-30T18:36:43Z

should not be ctrl+z, should be ctrl+c.

← Older revision		Revision as of 18:36, 30 January 2014
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	[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]		[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]
	#"arecord -f cd -D hw0,1 lolcat.wav" <br /><br />		#"arecord -f cd -D hw0,1 lolcat.wav" <br /><br />
	#ctrl+z<br /><br />		#ctrl+c<br /><br />
	#"aplay lolcat.wav" you should now hear what you recorded.		#"aplay lolcat.wav" you should now hear what you recorded.

Kingu: Added picture by aTc

2014-01-01T16:46:59Z

Added picture by aTc

← Older revision		Revision as of 16:46, 1 January 2014
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	This is a general information page for the various applications of MIDI on the Pandora.		This is a general information page for the various applications of MIDI on the Pandora.

			==Doing things with sound==

	===Game music===		===Game music===
			[[image:AudioProduction.jpg\|thumb\|Audio production on pandora]]
	Many games make use of MIDI background music. Generally these are PC ports like Doom, Warcraft, Dune 2, ROTT, the Zelda remakes, Albion and more. To enable music in these games (as directed by their documentation), install the [http://repo.openpandora.org/?page=detail&app=timidity-midi-installer-19487 Timidity MIDI installer]. It provides the sound and configuration required to enable MIDI background music.		Many games make use of MIDI background music. Generally these are PC ports like Doom, Warcraft, Dune 2, ROTT, the Zelda remakes, Albion and more. To enable music in these games (as directed by their documentation), install the [http://repo.openpandora.org/?page=detail&app=timidity-midi-installer-19487 Timidity MIDI installer]. It provides the sound and configuration required to enable MIDI background music.

Kingu at 19:31, 20 December 2013

2013-12-20T19:31:22Z

← Older revision		Revision as of 19:31, 20 December 2013
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	== Microphone ==		== Microphone ==
			twl4300-hifi-1
	[[File:Microphone.jpg\|thumbnail\|This is where the microphone is located]]		[[File:Microphone.jpg\|thumbnail\|This is where the microphone is located]]
	The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343] Handled by [http://www.ti.com/product/tps65950 TPS65950]		The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343] Handled by [http://www.ti.com/product/tps65950 TPS65950]

Kingu: added mic test instructions

2013-12-20T19:07:16Z

added mic test instructions

← Older revision		Revision as of 19:07, 20 December 2013
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	=== Microphone testing ===		=== Microphone testing ===
	[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]		[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]
	~~Note that in order to know if your microphone is working~~, you should ~~probably have working sound~~. ~~=) (todo: link)~~		#"arecord -f cd -D hw0,1 lolcat.wav" <br /><br />
			#ctrl+z<br /><br />
			#"aplay lolcat.wav" you should now hear what you recorded.

	* using mumble?

	=== ~~using arecord and aplay~~ ===		=== other soundcards ===

	* http://pandorawiki.org/Audio_system#Recording		* http://pandorawiki.org/Audio_system#Recording
			(example made on regular desktop PC)

	~~Learn the device.~~ ~~On my desktop it is:~~		\arecord -l

	\arecord -l

	<pre>		<pre>

Kingu: added TPS65950 link for mic

2013-11-24T11:02:56Z

added TPS65950 link for mic

← Older revision		Revision as of 11:02, 24 November 2013
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	Stereo dynamic speakers embedded in the screen bezel for better audio positioning and response.		Stereo dynamic speakers embedded in the screen bezel for better audio positioning and response.
	<br /><br /><br /><br /><br />		<br /><br /><br /><br /><br />

	== Microphone ==		== Microphone ==
	[[File:Microphone.jpg\|thumbnail\|This is where the microphone is located]]		[[File:Microphone.jpg\|thumbnail\|This is where the microphone is located]]
	The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343]		The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343] Handled by [http://www.ti.com/product/tps65950 TPS65950]

	=== Microphone testing ===		=== Microphone testing ===

Kingu: Added images of microphone

2013-11-24T10:53:06Z

Added images of microphone

← Older revision		Revision as of 10:53, 24 November 2013
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	<br /><br /><br /><br /><br />		<br /><br /><br /><br /><br />
	== Microphone ==		== Microphone ==
			[[File:Microphone.jpg\|thumbnail\|This is where the microphone is located]]
	The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343]		The microphone is up in the right hinge hump in between the 9 and 0 buttons. It can be used with the lid open or closed since it has the hole facing up and slightly in toward the user (somewhat like the power LED).[http://www.gp32x.com/board/index.php?s=&showtopic=44133&view=findpost&p=647343]

	=== Microphone testing ===		=== Microphone testing ===
			[[File:Micfunnel.jpg\|thumbnail\|Closeup of microphone funnel]]
	Note that in order to know if your microphone is working, you should probably have working sound. =) (todo: link)		Note that in order to know if your microphone is working, you should probably have working sound. =) (todo: link)

Kingu: added image of volumewheel

2013-11-24T10:28:56Z

added image of volumewheel

← Older revision		Revision as of 10:28, 24 November 2013
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	== Adjusting volume ==		== Adjusting volume ==
	[[File:Volumewheel.jpg\|thumbnail\|Volume-wheel]]		[[File:Volumewheel.jpg\|thumbnail\|Volume-wheel]]
	Passive potentiometer based ~~volumeadijustment~~.		Passive potentiometer based volumeadjustment.

	==Resampling to adjust volume==		==Resampling to adjust volume==

Kingu at 10:28, 24 November 2013

2013-11-24T10:28:17Z

← Older revision		Revision as of 10:28, 24 November 2013
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	*Apple, LG and Samsung seems not.working.		*Apple, LG and Samsung seems not.working.

			== Adjusting volume ==
			[[File:Volumewheel.jpg\|thumbnail\|Volume-wheel]]
			Passive potentiometer based volumeadijustment.

	==Boosting the volume==		==Resampling to adjust volume==
			Boosting the volume in this way is strongly discouraged.
	From urjaman[http://www.gp32x.com/board/index.php?/topic/53857-tweaks-thread/page__view__findpost__p__890693]:		From urjaman[http://www.gp32x.com/board/index.php?/topic/53857-tweaks-thread/page__view__findpost__p__890693]:
	If you want to over-amplify (will crackle if you overdo it == play loud recording with high volume) the audio with the software volume control (eg. I just watched firefly with my Pandora and really couldn't hear it properly with the integrated speakers because it was too quiet recording), modify .asoundrc(add the + line, without the +):		If you want to over-amplify (will crackle if you overdo it == play loud recording with high volume) the audio with the software volume control (eg. I just watched firefly with my Pandora and really couldn't hear it properly with the integrated speakers because it was too quiet recording), modify .asoundrc(add the + line, without the +):