[audacity4blind] Re: getting and Error.

  • From: Gale Andrews <gale@xxxxxxxxxxxxxxxx>
  • To: audacity4blind@xxxxxxxxxxxxx
  • Date: Fri, 13 Sep 2013 17:36:43 +0100

| From "jim gamage" <james.gamage@xxxxxxxxxxxxxx> 
| Fri, 13 Sep 2013 16:58:56 +0100
| Subject: getting and Error.
> I have now done some more experimenting and am now convinced that it is my
> Soundblaster card that the new Audacity doesn't like. Plugging in and
> configuring the realtek card has no problem, I can use the new version of
> Audacity without altering any settings in devices by using the realtek card.
> I can still use my Soundblaster by going into Devices and pressing OK.
> If I load Audacity with my Soundblaster as the default device, I get a
> reduced volume and a fairly quiet tone in the background, I would describe
> the latter as a sine wave at about middle C, [I am not a musician, so
> forgive me if this is not quite correct. 
> If I load Audacity and then set the loop option, press OK on this, the audio
> doesn't change, in other words it's still low and with the tone in the
> background, closing Audacity and re loading it leaves the tone etc, but
> going back to MME sorts it.
> If I load Audacity and stop the problem by just using MME and pressing OK,
> the audio increases in volume and the tone disappears, if I then set the
> loop option the  audio remains normal.
> I hope someone more technical than me can make some sense of that, but it
> seems that my Soundblaster is the culprit.


2.0.4 has support for new "hosts" called "Windows WDM-KS"
and "Windows WASAPI".  

Hosts are different software interfaces for your sound devices.

"KS" is short for Kernel Streaming. You can record with very  
little latency using this host if you reduce "Audio to buffer" in 
the Audacity Recording Preferences (as long as you don't 
reduce the buffer too low). 20 ms buffer should work fine.  

When you start Audacity or press OK in Preferences, Audacity 
interacts with all the devices it recognises and with all the audio 
hosts (MME, Windows DirectSound, Windows WDM-KS and 
Windows WASAPI). So you may hear a click in the speakers
at that point. 

If you did not hear that click in 2.0.3, then and it may be that
WDM-KS or WASAPI are the cause. 

Both new hosts are somewhat experimental. If selecting MME 
solves the SoundBlaster tone and volume-changing problems, 
I suggest exiting Audacity with MME selected, then MME will 
be selected for you next time you start Audacity. 

The alternatives would be to update your SoundBlaster to the 
driver I indicated (assuming it does not already have that 
driver), or just wait to see if PortAudio changes in future 
Audacity versions improve the situation.     
If you are happy using MME then probably you can just leave 
things as they are. 


> -----Original Message-----
> From: audacity4blind-bounce@xxxxxxxxxxxxx
> [mailto:audacity4blind-bounce@xxxxxxxxxxxxx] On Behalf Of Gale Andrews
> Sent: 11 September 2013 16:31
> To: audacity4blind@xxxxxxxxxxxxx
> Subject: [audacity4blind] Re: getting and Error.
> | From "jim gamage" <james.gamage@xxxxxxxxxxxxxx> Wed, 11 Sep 2013 
> | 08:08:10 +0100
> | Subject: getting and Error.
> > My soundcard is,
> > 
> > Creative Soundblaster X-Fi xtreme.
> > it is a bit old now but not ancient.  
> Jim, 
> I found you were on Windows 7 64-bit in one of your other posts.
> The latest driver for X-Fi Xtreme is here: 
> http://tinyurl.com/pxyvvam 
> (in the "Latest Downloads" section near the bottom of the page). 
> You may want to check if you have that driver. But also if nothing is badly
> broken, it is often best not to fix it.  
> Gale 
> > -----Original Message-----
> > From: audacity4blind-bounce@xxxxxxxxxxxxx
> > [mailto:audacity4blind-bounce@xxxxxxxxxxxxx] On Behalf Of Gale Andrews
> > Sent: 10 September 2013 17:10
> > To: audacity4blind@xxxxxxxxxxxxx
> > Subject: [audacity4blind] Re: getting and Error.
> > 
> > 
> > | From "jim gamage" <james.gamage@xxxxxxxxxxxxxx> Tue, 10 Sep 2013 
> > | 16:45:32 +0100
> > | Subject: getting and Error.
> > > Hello Gale,
> > > I am the one who got the error with MME, after going into devices and 
> > > OK several times, the noise has disappeared,I don't know why,  but I 
> > > still have a peculiarity, the level of sound increases slightly if I 
> > > go into devices and O K after loading Audacity
> > 
> > The output level should not increase of course, unless you changed the
> > output device in Preferences. 
> > 
> > 
> > > the program is now usable, but it gets more curious all the time.
> > 
> > I hope that some quirks will be resolved for 2.0.5 if we update to the
> > latest version of PortAudio. 
> > 
> > 
> > > I don't think my soundcard driver is broken, it works on all other
> > > applications now and I do have two soundcards, a Realtek and a
> > Soundblaster,
> > > both work alright. 
> > 
> > Many SoundBlaster cards are now very old and no longer 
> > supported by Creative.  Do you know exactly what make and
> > model number your SoundBlaster is? 
> > 
> > Audacity must keep updating PortAudio (as above) so that we 
> > support the latest devices. Occasionally this may create problems 
> > for very old devices. 
> > 
> > 
> > 
> > Gale 
> > 
> > 
> > > It's good to get feedback, so thanks to all who have answered.
> > > 
> > > Best Regards, Jim. 

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