[Dspforum] Did anyone use octave instead of matlab?

[Wenstrand, Doug S.]

The PC sound control panel is what you use to change the recording source, Matlab just uses what you setup there.

Go to the mixer by double clicking on the little speaker in the bottom right of your taskbar (or through the control panel)
Options -> Properties
you get a radio button :
adjust volume for playback, or record
select record
then the new mixer should show line in, and microphone.  Uncheck the microphone, and select the line-in.  Here is where you can also tailor the volume to nicely match the output range of your codec.

hope that helps
Doug


_______________________________________
From: dspforum-bounces at echelonembedded.com [dspforum-bounces at echelonembedded.com] On Behalf Of Alan Ding [ading1 at jhu.edu]
Sent: Sunday, September 20, 2009 2:48 PM
To: dspforum at echelonembedded.com
Subject: Re: [Dspforum] Did anyone use octave instead of matlab?

I can't seem to get the wavrecord function in MATLAB to record from Line-in instead of Mic-in.  What are you guys using?  Audacity only outputs as .wav, .mp3, and ogg vorbis format?  I was able to use the spectrum functionality and output the frequency data in log format as a .txt.

~Alan

----- Original Message -----
From: Nenad Uzunovic <nenad at roboticresearch.com>
Date: Sunday, September 13, 2009 10:56 pm
Subject: Re: [Dspforum] Did anyone use octave instead of matlab?
To: dspforum at echelonembedded.com


> It seems to go up to 22KHz on frequency plots. I still have to play
> with
> it more.
>
> Joseph Haber wrote:
> > And probably produce real-time spectrograms that can help with this
> lab
> > and others. I don't know what kind of frequency resolution you can get.
> >
> > Nenad Uzunovic wrote:
> >> Awesome! It can output straight to .mat file.
> >> Thanks
> >>
> >> Joseph Haber wrote:
> >>> Nenad,
> >>>
> >>> I have not tried it, but I think "Audacity" may be decent. I
> *think*
> >>> folks from work use it to record baseband signals (i.e., audio).
> >>>
> >>>
> >>>
> >>> I have generally seen it used on Linux.
> >>>
> >>> Joseph
> >>>
> >>> Nenad Uzunovic wrote:
> >>>>
> >>>> Hi there,
> >>>>
> >>>> I am having issues recording audio in octave. Does anyone know
> how
> >>>> to do this?
> >>>>
> >>>> Or do you know of any program that will save samples in some
> easily
> >>>> readable format?
> >>>>
> >>>> Thanks,
> >>>> Nenad
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> Dspforum mailing list
> >>>> Dspforum at echelonembedded.com
> >>>>
> >>>>
> >>>
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> >>>
> >>
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