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.

2014-06-13T17:47:58Z

‎Microphone testing

2014-01-30T18:36:43Z

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

2014-01-01T16:46:59Z

Added picture by aTc

2013-12-20T19:31:22Z

2013-12-20T19:07:16Z

added mic test instructions

2013-11-24T11:02:56Z

added TPS65950 link for mic

2013-11-24T10:53:06Z

Added images of microphone

2013-11-24T10:28:56Z

added image of volumewheel

2013-11-24T10:28:17Z

@@ Line 17: / Line 17: @@
 ===Headset Compatibility===
 *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 ==

@@ Line 54: / Line 54: @@
 === Microphone testing ===
 [[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 />
 #"aplay lolcat.wav"  you should now hear what you recorded.
 === other soundcards ===

@@ Line 55: / Line 55: @@
 [[File:Micfunnel.jpg|thumbnail|Closeup of microphone funnel]]
 #"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.

@@ Line 137: / Line 137: @@
 This is a general information page for the various applications of MIDI on the Pandora.
 ===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.

@@ Line 48: / Line 48: @@
 == 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] Handled by [http://www.ti.com/product/tps65950 TPS65950]

@@ Line 53: / Line 53: @@
 === 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)
+#"arecord -f cd -D hw0,1 lolcat.wav" <br /><br />
-=== using arecord and aplay ===
+=== other soundcards ===
 * http://pandorawiki.org/Audio_system#Recording
-Learn the device.  On my desktop it is:
+  \arecord -l
 <pre>

@@ Line 21: / Line 21: @@
 == Adjusting volume ==
 [[File:Volumewheel.jpg|thumbnail|Volume-wheel]]
-Passive potentiometer based volumeadijustment.
+Passive potentiometer based volumeadjustment.
 ==Resampling to adjust volume==

@@ Line 19: / Line 19: @@
 *Apple, LG and Samsung seems not.working.
-==Boosting the volume==
+==Resampling to adjust volume==
 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 +):