Neo 1973 audio subsystem - Revision history

Vandry: remove unnecessarily deep nesting

2010-12-01T22:47:26Z

remove unnecessarily deep nesting

2010-12-01T22:41:02Z

update channel numbers for kernel 2.6.34

2010-11-13T11:04:31Z

2010-08-03T17:31:26Z

‎ALSA Channels

2009-11-22T01:07:05Z

‎ALSA Channels: New control names

2009-07-15T19:21:53Z

‎using phone-internal microphone and speaker: control#63 fix explanation

2009-04-05T12:10:31Z

rewritten my previous post

2009-04-05T10:17:53Z

Usage for mode "01" - mixing audio into voice call output

2009-04-04T09:39:05Z

added a "Recording and maintaining a call" state file.

2009-03-15T22:59:19Z

‎Recording and Playback .state

← Older revision		Revision as of 11:04, 13 November 2010
Line 9:		Line 9:
	[[Image:WM8753_routing_diagram_alsa_controls.png\|1000px]]		[[Image:WM8753_routing_diagram_alsa_controls.png\|1000px]]

		+	Best of both worlds, Png with the ALSA control names and the numid's {in blue}:
		+	[[Image:WM8753_routing_diagram_alsa_controls_20101112.png\|1000px]]

	<pre>		<pre>

@@ Line 11: / Line 11: @@
 <pre>
-[[Names for aliases in new driver. "NEW"=recommended, "new"=suggested]]
+[[Names for aliases in new driver. "NEW"=recommended, "new"=suggested. No kernel uses the NEW/new names at least as of 2010-08-03. Update if some great renaming really happens.]]
 :root@om-gta02:~# amixer controls
 :numid=1,name='PCM Volume'

@@ Line 139: / Line 139: @@
 ==== using phone-internal microphone and speaker ====
 [[Image:WM8753 BlockDiagram GSM handset.png]]
@@ Line 162: / Line 164: @@
 ** MIC2/MIC2N
 ** Mic2 Volume
-** ALC Micer Mic2
+** ALC Micer Mic2 *)
-** Left PGA
+** Left PGA *)
-** Mic Sidetone Mux [Left PGA]
+** Mic Sidetone Mux [Left PGA *)"Mic 2"]
 ** Mono Sidetone Volume
 ** Mono Mixer Sidetone Playback Switch

@@ Line 119: / Line 119: @@
 We are still wondering what use Mode "01" might have, other than analog mixed mono output (which could as well be done at digital side by feeding L/R with same data)
-*--[[User:MMlosh|MMlosh]] 10:15, 5 April 2009 (GMT)  There's no volume control on HiFi codec output. This might be useful when mixing PCM output into voice call (because there's volume control; controls 8 and 13)
+*--[[User:MMlosh|MMlosh]] 10:15, 5 April 2009 (GMT) Mono signal has separate volume control for stereo (control #8) and mono (control #13) output. This might be useful when mixing PCM (VoIP call / music) output into GSM call and playing it locally (and you can still have different volume levels)
 === Phase0 Quick Start ===

← Older revision		Revision as of 10:17, 5 April 2009
Line 118:		Line 118:

	We are still wondering what use Mode "01" might have, other than analog mixed mono output (which could as well be done at digital side by feeding L/R with same data)		We are still wondering what use Mode "01" might have, other than analog mixed mono output (which could as well be done at digital side by feeding L/R with same data)
		+
		+	*--[[User:MMlosh\|MMlosh]] 10:15, 5 April 2009 (GMT) There's no volume control on HiFi codec output. This might be useful when mixing PCM output into voice call (because there's volume control; controls 8 and 13)

	=== Phase0 Quick Start ===		=== Phase0 Quick Start ===

← Older revision		Revision as of 09:39, 4 April 2009
Line 448:		Line 448:

	to the alsactl -f Callrec.txt restore command.		to the alsactl -f Callrec.txt restore command.
		+
		+	==== Recording and maintaining a call .state ====
		+	For the actual recording:
		+	arecord -D hw:0,0 -r 8000 -f S16_LE -c 2 record.wav
		+
		+	please note that this is the state file I wrote for my [[Call Recorder]], so if you need anything you might miss here, just go and check it's source.
		+
		+	The actual state for gsmhandset (gsmhandset.state):
		+	[[Image:callrec-gsmhandset.txt]]
		+
		+	A patch (diff gsmhandset.txt callrec-gsmhandset.txt) to apply on every state file, including gsmheadset.state and gsmspeakerout.state.
		+	[[Image:callrec-gsmhandset-patch.txt]]

	== Userspace Sound Control Daemon ==		== Userspace Sound Control Daemon ==

@@ Line 432: / Line 432: @@
 To record just issue:
-arecord -D hw:0,0 -f S16_LE -c 2 record.wav
+arecord -D hw:0,0 -r 8000 -f S16_LE -c 2 record.wav
 and to inject sound just issue: