Microphone and speaker /dev/ entries?

Dear all,
Which /dev/ entry corresponds to the microphone and which to the speakers?
I suppose there is a more general question which is "How can I find out which driver takes care of a given /dev/ entry?". ls -l gives the major and minor device numbers but how do I turn the major number into something intuitively meaningful?
I'm working on the premise that I can read a chunk of data from /dev/mike whatever that might be and then replay it by writing it to /dev/audio, whatever that might be. Is this accurate? Is there anything I should watch out for? Helpful hints on the format in case I want to convert it to mp3 or some other such format all appreciated.
Regards, Max

Try to perform a hard reset of the phone (Press and hold the HOME button and the Sleep/wake button until you see the Apple logo).
If that does not fix then Settings > General > Reset > Reset All Settings. If both these reset options fails then you might have to restore the phone.

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Kittmaster's Component Database
http://ni.kittmaster.com
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Please help: Can't access your microphone and soun...

Dear all,
I think this question have been surfaced many times, but after searching for answers sometime, I just have to post again. So bear with me.
Machine: Lenovo ThinkPad Edge E220s
Purchase date: October 2011
Description: Laptop
Audio: Internal Microphone (Conexant 20671 SmartAudio HD)
Speaker: Speakers (Conexant 20671 SmartAudio HD)
- In English, that is the internal speaker.
OS: Windows 7 Home Premier 64 bit
Skype: 5.5.0.124
- In English, that is the most up to dated version
When I try to call the Echo / Sound Test, after hearing the lady says hello, I see a message box comes up:
Microphone tab has a red exclamation mark.
Speaker tab has a read exclamation mark.
In each tab, there is "Can't access your sound card" message. Sometime I see another small box at the bottom right saying "No microphone detected."
What I have done
1) Tools -> Options -> General -> Audio settings
For Microphone and Speakers, I have uncheck the auto adjust settings.
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2) Edit AppData\Skype\shared.xml
[ Edit: It seems like the editor here does not like the percent sign before and after the AppData.]
a) I make sure the line AGC XML tag has a value of zero (0).
b) I make sure the MicVolume tag is just 100.
Restart Skype. Same thing. Not working.
3) Test out speaker and microphone in the Skype welcome screen.
The speaker always works.
The test on microphone works sometime and does not work sometime.
Help please! I have less than 24 hours to make a very important call over Skype!

I solve the issue. After I have updated the system using Lenovo's own software update, the microphone works! I hate it. I think I have run many many times the Windows update but it does not pick up the Lenovo software.
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Microphone and speaker /dev/ entries?

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