[darkice] Re: I have Darkice and Icecast2 running on Raspberry Pi but...
- From: <addr@xxxxxxxxxxxxx>
- To: darkice@xxxxxxxxxxxxx
- Date: Thu, 29 Nov 2012 1:29:45 +0000
Hi Tony,
I was thinking about your noise problem and thought I could share my thought
with you. My experience with noise when using Darkice is that it tends to be
in the analog part of the audio circuit. When I say analog part I mean from
the microphone to the input of the PCM. I use USB Dual-pre from ART for my
PCM. The input of the ART box is XLR microphone connectors and the output is a
USB port.
You can test the quality of the audio signal path by using a simple audio
recorder like arecord to make a sample recording of the audio quality and play
it back with out having Darkice in the equation. Just make sure that the
Dual-pre (or your input device) is the default input audio device for Linux.
If this test indicates that there no noises from the audio part of the
circuit then the other source for noise is in the quality of your network
connection between the Darkice system, the Icecast system and/or the connection
between the Icecast system and the internet. My Icecast servers are on a good
link to the internet so once I get recorded material uploaded to the Icecast
server I have little problems with sound quality. My noise problems have been
the link between the Darkice system and the Icecast servers.
Hope this helps,
Joel Goodwin
---- "(:techitone:)" <techitone@xxxxxxxxx> wrote:
> I've found how to change the input gain using Alsamixer - F6 to change
> sound card, then F4 [Capture], then up/down arrows to change gain.
>
> Thanks for pointing the way forward, Mook :)
>
> The sound quality is still a bit low, but at least I can hear it now...
>
> Best wishes, Tony
> --
>
>
>
>
> On 27 November 2012 22:57, (:techitone:) <techitone@xxxxxxxxx> wrote:
>
> > Thanks Mook
> >
> > Alsamixer is only showing controls for audio output gain, it's not showing
> > any controls for audio input. I can't find any controls for the Griffin
> > iMic (usb sound card).
> >
> > I agree, the iPod needs too quieter, and the usb sound card needs to be
> > set louder.
> >
> > Any idea how I might check and alter the iMic's gain?
> >
> > Many thanks, Tony
> > --
> >
> >
> >
> >
> >
> > On 27 November 2012 17:56, Rev. Mook <revmook@xxxxxxxxxxxxxxxx> wrote:
> >
> >>
> >> That sounds more like a problem with your signals gain staging than a
> >> config issue with Darkice/ Icecast2. I would try turning your iPod volume
> >> down and your soundcards input up using alsamixer.
> >>
> >> ~Mook
> >>
> >>
> >>
> >> On Tue, Nov 27, 2012 at 5:17 AM, (:techitone:) <techitone@xxxxxxxxx>wrote:
> >>
> >>> I've installed Darkice and Icescast2 and they are running on my
> >>> Raspberry PI but when I listen to the stream it is very quiet and a little
> >>> distorted.
> >>>
> >>> Any ideas why?
> >>>
> >>> Here's my setup,
> >>>
> >>> Raspbery Pi running Raspian - all (apt-get) upgrades and updates done
> >>> Installed Darkice and Icecast2 using this
> >>> tutorial<http://www.t3node.com/blog/live-streaming-mp3-audio-with-darkice-and-icecast2-on-raspberry-pi/>
> >>> I am playing audio into the RPi via an iPod shuffle (volume up full),
> >>> plugged into Griffin iMac (usb sound card), plugged into a powered usb
> >>> hub,
> >>> plugged into the RPi. The RPi is connected to my home network via a
> >>> wireless usb (n) wifi dongle. I run (sudo) Darkice in a terminal window
> >>> (on
> >>> the desktop) and can see Icecast running in a web browser on the RPi. I
> >>> then opened the Icecast server in Firefox on my Macbook Pro, the stream
> >>> loads into iTunes and starts to play. BUT it it really quiet and a bit
> >>> distorted (MBP and iTunes volumes are up full). I don't know how to make
> >>> it
> >>> louder, or the quality better :(
> >>>
> >>> My Darkice config ( etc/darkice.cfg) looks like this,
> >>>
> >>> duration = 0
> >>> bufferSecs = 5 (I've tried 2, 10, 15, 20 etc)
> >>> reconnect = yes
> >>> device = hw:1,0 (hw:1.0 = soundcard indicated by using terminal 'arecord
> >>> -l') iPod shuffle/Griffin iMic/powered usb hub/RPi as mentioned above)
> >>> samplerate = 44100 (I have tried 11025 and 22050)
> >>> bitsPerSample = 16 (I have tried 8 and 24)
> >>> channel = 2 (I have tried 1)
> >>> [Icecast2-0]
> >>> bitrateMode = abr
> >>> format = mp3
> >>> bitrate = 128 (i have tried 96)
> >>> server = localhost
> >>> port = 8000
> >>> password = ********
> >>> mountPoint = raspi
> >>> name = Darkice trial
> >>> description = this is only a trial
> >>> url = http://localhost
> >>> genre = my own
> >>> public = no
> >>> #localDumpfile = dump.ogg (I have tried the mp3 setting 'recording.mp3'
> >>> here, and it's now marked as # ie not required)
> >>>
> >>> I would really like to get this running asap for a community project I
> >>> am hoping to run.
> >>>
> >>> Any help, suggestions, ideas welcomed :)
> >>>
> >>> Many thanks in advance,
> >>>
> >>> Tony :)
> >>> --
> >>> --
> >>> (:techitone:)
> >>> --
> >>>
> >>>
> >>
> >
> >
> > --
> > --
> > (:techitone:)
> > --
> >
> >
> >
> >
> >
> >
>
>
> --
> --
> (:techitone:)
> --
Other related posts:
