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[Discuss-gnuradio] Can't get input from sound card.

From: Bahn William L Civ USAFA/DFCS
Subject: [Discuss-gnuradio] Can't get input from sound card.
Date: Thu, 15 Mar 2007 15:14:04 -0600

Greetings all,

I'm trying to interact with the sound card. The example programs, such
as dial_tone.py and dialtone_v.py, that output audio work fine. But I
don't seem to me able to get any data from the audio card using such
programs as audio_to_file.py or audio_fft.py.

When I run 
[]# audio_fft.py -S

I get the following message:

WARNING **: IPP request failed with status 1030

I don't know if this is an issue or not. I searched the archives and it
appears that many folks have seen it without any adverse affects.

However, I don't seem to actually get any data. The scope runs, but it
is flatlined. I know the soundcard and the microphone are good. I've
tried both the mic input and, out of desperation, the line input jack. 

Similarly, when I ran the audio_to_file.py program, it generates a file
of the right length, but when I play it back I hear nothing.

Any ideas?


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