Re: Microphone does not work in Fedora 8

"hackeron@xxxxxxxxx" (hackeron@xxxxxxxxx) writes:
On Feb 2, 7:35=A0am, Matt Giwer <jul...@xxxxxxxxxxxxxxxxxxxxxxx> wrote:
Masroor wrote:
Dear All,
I do not know where to start debugging this problem. Yesterday I
bought a Cosonic microphone and attached it to the microphone marked
port at the rear (red color). Speakers attached to the same sound card
port (green) are working fine. But I can not seem to record using this
microphone.

I have tried using audacity and arecord. But none of this work.

This is the output from arecord,

[root@rafid ~]# arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: ICH7 [Intel ICH7], device 0: Intel ICH [Intel ICH7]
=A0 Subdevices: 1/1
=A0 Subdevice #0: subdevice #0
card 0: ICH7 [Intel ICH7], device 1: Intel ICH - MIC ADC [Intel ICH7 -
MIC ADC]
=A0 Subdevices: 1/1
=A0 Subdevice #0: subdevice #0
card 0: ICH7 [Intel ICH7], device 2: Intel ICH - MIC2 ADC [Intel ICH7
- MIC2 ADC]
=A0 Subdevices: 1/1
=A0 Subdevice #0: subdevice #0
card 0: ICH7 [Intel ICH7], device 3: Intel ICH - ADC2 [Intel ICH7 -
ADC2]
=A0 Subdevices: 1/1
=A0 Subdevice #0: subdevice #0

I can not find anything here to see whether =A0the microphone is working=

or not. Is there tool or tutorial over the net to debug the problem I
am facing?

From google I did not find anything useful.

Thanks in advance.

=A0 =A0 =A0 =A0 The input volume defaults to zero else it would introduce =
noise into other
audio sources.

=A0 =A0 =A0 =A0 Find some kind of the control for audio volume and raise t=
he gain to
something other than zero.

Is there no way to record both line-in and microphone at the same
time? :( -- At least is there some predictable way to record with
arecord without having to go into alsamixer and selecting the correct
source?

I've never seen any method of selecting more than one input at a time.
In order to make that useable, you'd also need to have two controls
for input gain, so you could adjust the two inputs independently. Otherwise,
you'd have to live with whatever levels were coming into the soundcard.

I don't get the second question. The recording app takes whatever it's
sent. The mixer app selects what to "output" and the various levels.

Unless you have some recording app that includes the mixer function, you
will have to run a mixer application. And I don't recall seeing a recording
application that includes a built in mixer; if you're lucky it will have
a button to press to invoke an external mixer.

You can save the settings from when you run a mixer. WOuld that be your
question? So if you're only recording from the microphone input, you
can set it up in a mixer and then save it, so you don't have to constantly
do the adjustments. A little work, and you could have two (or even more)
files containing the mixer settings, and by invoking one of them, get
the desired input selection at the right level.

Michael


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