Re: [Discuss-gnuradio] problems with windows binaries and audio

[Achilleas Anastasopoulos]

I think I figured out what is going on:

The audio block DOES NOT BLOCK no matter what the value of the "OK to block" setting is.

The reason that the 440 Hz tone was heard perfectly was that although samples were dropped by the audio device, the remaining samples where enough to reconstruct a nice tone.

This unfortunately does not work with other audio signals.

The solution of putting a throttle unfortunately does not work well: it produces a very choppy sound on-off all the time.

Geof: thanks for all the help. I guess I will have to wait for version 3.7.10.2.

Could you please confirm that indeed in this version the audio block DOES NOT BLOCK regardless of the setting.

thanks again,

Achilleas

On Mon, Nov 7, 2016 at 3:24 PM, Achilleas Anastasopoulos <address@hidden> wrote:

Hi Geof,

apologies if the email was not clear: I guess for me getting some sound was not considered good enough :-)

The audio sink IS BLOCKING (OK to block is indeed set to YES)

and as I mentioned in the last email, a nice 440Hz tone generated by a signal source is PERFECTLY audible.

As I mentioned earlier, I am starting to believe that the "wav file source" is not working properly.

Can anyone confirm a working configuration with:

Wav File Source --> Audio Sink

Thanks

Achilleas

On Mon, Nov 7, 2016 at 2:49 PM, Geof Nieboer <address@hidden> wrote:

OK, so you are getting *some* sound.  Your first email seemed to indicate nothing at all was happening.

In that case, please add a throttle block to your flowgraph, set to the audio sample rate you desire.

The audio sink is being overwhelmed with data from the file source and is not blocking.

When 3.7.10.2 is released the windows audio sink will block when "OK to block" is set to true.

Geof

On Mon, Nov 7, 2016 at 1:25 PM, Achilleas Anastasopoulos <address@hidden> wrote:

oopps I meant "a nice 440 Hz" cosine can be heard nicely.

Achilleas

On Mon, Nov 7, 2016 at 11:57 AM, Achilleas Anastasopoulos <address@hidden> wrote:

I also would like to report that a nice 440KHz cosine can be heard perfectly OK with the default audio sink.

So now I have my doubts about the wav file source block instead of the audio sink block....

Any ideas?

thanks

Achilleas

On Mon, Nov 7, 2016 at 10:20 AM, Achilleas Anastasopoulos <address@hidden> wrote:

Hi Geof,

thank you for your suggestions.

Here is some more information from my Windows 7 running gnuradio binaries 3.7.10.1

1) 

When I use a simple wav file source with audio sink and without setting the "Device Name" entry I get the following output:

INFO: Audio sink arch: windows

gr::pagesize: no info; setting pagesize = 4096

aOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaO

I can hear the sound but it is not coming out at the right speed/etc regardless of what sample rate I choose.

So I tried the second method that Geof suggested: entering explicitly the device ID and/or the string representing the device's name.

2)

Following Geof's advice I went to the "Device Manager" and the "Sounds, video and game controllers" section and I see a device "High Definition Audio Device". I clink on the "Details" tab and under the Property "device description" i see "High Definition Audio Device", so this is what I put as the string under the "Device Name" property of the audio sink.

The output then is:

INFO: Audio sink arch: windows

INFO: Warning: waveOut device 'High Definition Audio Device' was not found, defaulting to WAVE_MAPPER

gr::pagesize: no info; setting pagesize = 4096

aOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOaOa

aOaOaOaOaOaOaOaOaOaO

And the sound is the same as above.

So my question is the following:

How exactly can I find in the control panel the name of my audio device?

Clearly the one I used ("High Definition Audio Device") was not found...

Can it be that the problem is with the "wav file source" block and not with the audio sink block?

Thanks

Achilleas

On Sun, Nov 6, 2016 at 5:12 PM, Geof Nieboer <address@hidden> wrote:

The audio device in the windows audio sink can be used one of two ways,

First is to use a number which is the device ID of the audio device, the second is to enter a string representing the device's name.

Realize, however, that there is no way to interactively iterate through the list of available devices, so you'll have to figure out the ID's/names yourself through the control panel.  It will give a warning in the output log if what you entered is not found so you can least use trial and error.  If it can't find the device you entered, or you don't put an entry in, it will use the WAVE_MAPPER device.

Geof

On Sun, Nov 6, 2016 at 5:15 AM, Tarquin Roode <address@hidden> wrote:

Hi

 

Mine works, I am using 3.7.9.2

So not a problem with the inary, it worked on Both Win 7 and Win 10

 

I am not a home a he moment so don’t have  ss to my PC, bt I just plopped the Audio Sink down and it worked

 

Ood luck

arqun

 

From: Discuss-gnuradio [mailto:discuss-gnuradio-bounces+tarquin.roode=address@hidden.org] On Behalf Of Achilleas Anastasopoulos
Sent: Saturday, 05 November 2016 2:46 AM
To: address@hidden
Subject: [Discuss-gnuradio] problems with windows binaries and audio

 

Hi,

 

I have installed the windows binaries from GCNDevelopment

http://www.gcndevelopment.com/gnuradio/

 

A simple test with a wav file and an audio sink does not seem to work.

I have changed the config file to use audio - windows but still this is not working.

(same grc file works fine on Linux).

I have tried this on both Windows 7 and 10 with no success.

 

Can someone report if they had success with audio on Windows with these binaries?

 

Any ideas as to what else I can try?

 

thanks

Achilleas

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