[linux-audio-dev] Re: aRts development (KDE) - Linux-audio-dev

7 Nov 2003

(resent, previously sent from non member account)

On Tuesday 04 November 2003 20.13, Sean Meiners wrote:
...
  Thanks, that helped.  But it only seems to run if I
stop the aRts server,
 which seems to defete the purpose of having it.

 On another note, has anyone had any luck/experience with recording?  I need
 to be able to access and pull data from the microphone.  Also, what about
 controling the sample rate?  I only want 8000Hz from the mic, anything more
 is overkill for my needs. 
It is not trivial... :-(
(but it is much better now KDE3.2b, then the last time I tried)

First thing first (I forgot when testing...)
* Control Center -> Sound System -> Hardware Tab -> Full Duplex !!!

If you use KDE then read the KRec startup tips carefully. 

* Tools ->
	Audio Manager, click on KRec::In to select arts bus to record (in_soundcard)
	start Arts control tool (optional), on View there are some interesting tools
		with older KDE you access the Audio Manager from here.
	start KMix, to select what hardware source is routed to in_soundcard.
		Input: select source (Mic, I guess for 8kHz) and capture,
			 adjust levels (I had to actually move the sliders - bug...),
			 deselect others.
		Recording levels should move with your mic input...

* File -> New (~ insert the tape)

* And finally
	it should be possible to press the red record button.
	rewind the tape
	playback

/RogerL

...

 On Monday 03 November 2003 08:55 pm, Jonas Christian Drewsen wrote:
 > On Monday 03 November 2003 21:47, Sean Meiners wrote:
 > > I've been pulling my hair out for the last week or so trying to find a
 > > good,
 >
 >  clean, and simple tutorial/example/manual on how to begin
 >
 > > developing an app that uses aRts.  So far I haven't found anything
 > > besides the idl and class documents, but those are really only usefull
 > > once you get going.  Is there anyone out there who's found/seen/wrote a
 > > simple tutorial along the lines of this:
 > > "http://doc.trolltech.com/3.2/how-to-learn-qt.html"?  Or maybe just
a
 > > very simple little app that plays a .wav file from the command line?
 > > Any help would be appreciated, even RTFM if it includes a link since I
 > > haven't
 >
 >  found a FM for developers yet (no, the KDE help docbook didn't
 >
 > > help).
 > > --Sean Meiners
 >
 > I think this should work. An example of playing stuff using playobjects
 > and one of how to play a simple sinusoid is attached. You may have to
 > edit the Makefile.
 >
 >
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-- 
Roger Larsson
Skellefteå
Sweden