Re: [Alsa-user] Microphone volume on USB soundcard very low, are there any snd_usb_audio options?

2016-08-02 Thread Ralf Mardorf
On Tue, 2 Aug 2016 10:05:36 +0200, Schmidt, Christian Thorge wrote:
>Hello all,
>
>I have a problem with the microphones volume being way too low
>(compared to what the same connector does under macOS) on a USB
>"soundcard". I have described the whole ordeal here (with pictures and
>system info):
>http://unix.stackexchange.com/questions/299322/microphone-volume-on-usb-soundcard-very-low-snd-usb-audio-options
>
>tl:dr: A "dedicated microphone adapter", eg. a C-Media USB soundcard
>device with an XLR mic connector (Bus 001 Device 004: ID 0d8c:0008
>C-Media Electronics, Inc.) that uses snd_usb_audio yields a very low
>mic input even when fully turned "up" all the way under alsamixer.
>There's no "boost" control for the input device. The same adapter
>yields a clean and strong signal under a different OS.
>
>As always, thanks for any pointers, any help or encouraging words ;)

Hi,

are you using pulseaudio?

I don't have pulseaudio installed, perhaps pulseaudio has an additional
volume control and you need to increase this, too, by using pavucontrol
as suggested by the link you posted? Did you already tested it?

Is there a setting regarding +4 dBu / -10 dbV or something related
to a possible included microphone amp for MacOS? Does your MacOS use
a proprietary driver or like Linux a class compliant default thingy?

What is the product name? And what does
http://www.cmedia.com.tw/support say to this issue?

Regards,
Ralf

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Re: [Alsa-user] Microphone volume on USB soundcard very low, are there any snd_usb_audio options?

2016-08-02 Thread Ralf Mardorf
On Tue, 2 Aug 2016 11:38:59 +0200, Ralf Mardorf wrote:
>are you using pulseaudio?

My apologies, I missed "The tools I'm using are ALSA only".

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Re: [Alsa-user] Random audio failures during reboot

2016-08-02 Thread Takashi Sakamoto
Hi,

On Aug 3 2016 10:06, the seeker wrote:
> I see random audio playback failures during reboot and the error message is:
> (snd_pcm_hw_open):(open '/dev/snd/pcmC0D0p' failed (-77))

You address about 'during reboot', while I cannot realize an actual 
timing to open the device.

Could you please explain about the details of your experience and 
environment as much as possible, so that we can realize them?


Regards

Takashi Sakamoto

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[Alsa-user] Random audio failures during reboot

2016-08-02 Thread the seeker
Hello all,

I see random audio playback failures during reboot and the error message is:
(snd_pcm_hw_open):(open '/dev/snd/pcmC0D0p' failed (-77))
Has anybody seen these kind of issues? Probably a timing issue in setting
up the sound card?

Thanks in advance,
Linux sound newbie
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Re: [Alsa-user] alsa.card numbers versus pulseaudio index numbers

2016-08-02 Thread Clemens Ladisch
Tom Horsley wrote:
> Clemens Ladisch wrote:
>> Don't use numbers but names.
>
> I spent several hours once trying to get:
>
> mplayer -vo gl_nosw -ao alsa:device=hw=0.1 -ac hwdts,hwac3,
>
> to use a name instead of the hw=0 stuff and nothing I tried
> was able to send sound out the optical output that
> device talks to. I've actually never seen an example
> anywhere on the web that describes exactly how to use
> a name instead of a number showing exactly what the
> number looks like first and exactly how to determine
> how to change that specific number into a name given
> the info in aplay -l or -L, etc.

The card number (0) can be replaced with the card ID, which is
the string in square brackets in /proc/asound/cards.  In your
case, it's probably "PCH" or "HDMI".


Regards,
Clemens

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[Alsa-user] Microphone volume on USB soundcard very low, are there any snd_usb_audio options?

2016-08-02 Thread Schmidt, Christian Thorge
Hello all,

I have a problem with the microphones volume being way too low
(compared to what the same connector does under macOS) on a USB
"soundcard". I have described the whole ordeal here (with pictures and
system info):
http://unix.stackexchange.com/questions/299322/microphone-volume-on-usb-soundcard-very-low-snd-usb-audio-options

tl:dr: A "dedicated microphone adapter", eg. a C-Media USB soundcard
device with an XLR mic connector (Bus 001 Device 004: ID 0d8c:0008
C-Media Electronics, Inc.) that uses snd_usb_audio yields a very low
mic input even when fully turned "up" all the way under alsamixer.
There's no "boost" control for the input device. The same adapter
yields a clean and strong signal under a different OS.

As always, thanks for any pointers, any help or encouraging words ;)

Best,
 Christian.

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