[Discuss-gnuradio] sorry to re_post: audio_alsa_sink[hw:0]: Device or resource busy

2011-09-15 Thread Qin Jian
Sorry to post again. As it was my first time to post on mail list, I didn't know how to reply messages in mail list, so I have to start a new thread and using this stupid way. When I want to connect the signal to the sound card, an error occurs as below: -

Re: [Discuss-gnuradio] searched the mail list but nothing w orks: audio_alsa_sink[hw:0]: Device or res ource busy

2011-09-15 Thread king baaaase
Thanks, alex. I don't know what does "access the ALSA interface with any other audio application?" mean. I could run alsamixer and I could listen mp3 using Totem Movie Player on Ubuntu. So? Qin Jian ___ Discuss-gnuradio mailing list Discuss-gnurad

[Discuss-gnuradio] gnuradio component directory structure

2011-09-15 Thread Josh Blum
This is the currently recommended directory structure: http://gnuradio.org/redmine/projects/gnuradio/wiki/Development2#Top-level-Directory-Structure I think there has been some wavering around an "include" directory. I personally like the idea of an include directory because: 1) It separates publ

Re: [Discuss-gnuradio] searched the mail list but nothing works: audio_alsa_sink[hw:0]: Device or resource busy

2011-09-15 Thread Alex DEKKER
On Thu, 15 Sep 2011 04:10:20 -0400, kingbase...@mail.com wrote: When I want to connect the signal to the sound card, an error occurs as below: --- audio_alsa_sink[hw:0]: Device or resource busy RuntimeError: audio_alsa_sink -

Re: [Discuss-gnuradio] which sample rate is set by uhd.single_usrp_source.set_samp_rate?

2011-09-15 Thread Nick Foster
On Thu, Sep 15, 2011 at 12:10 PM, Yan Nie wrote: > Dear a > I'm just going to go out on a limb here... It's a sample source, so you're setting the RX sample rate. --n > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.

[Discuss-gnuradio] which sample rate is set by uhd.single_usrp_source.set_samp_rate?

2011-09-15 Thread Yan Nie
 Dear all, In my project, I am using uhd.single_usrp_source to set the configuration for USRP N200 with LFRX DB. The sub-function set_samp_rate is used to set the sample rate, though I am not sure this sample rate setting is set to which signal, before Digital Down Conversion or after? Original

[Discuss-gnuradio] Chunks_to_Symbols Symbol Table format?

2011-09-15 Thread jaco versfeld
Hi There, I basically have two questions. 1. How do I specify the Symbol Table in the Chunks_to_Symbols block? 2. How do I M-QAM (M = 8 / 16, etc) modulate data from the audio sink (speech)? For the second part, I thought of the following setup: Audio Source -> low pass filter + decimation -> f

Re: [Discuss-gnuradio] problem in nexecuting grc

2011-09-15 Thread Josh Blum
On 09/15/2011 06:51 AM, ahmad wrote: > hello everybody > i have installed the latest uhd images and master branch for n210, (v > 003_002_003-50-gff40f2d) after that, uhd_find_device and uhd_usrp_probe > functions properly, but the grc not executing and i received the following > error: > Traceba

[Discuss-gnuradio] problem in nexecuting grc

2011-09-15 Thread ahmad
hello everybody i have installed the latest uhd images and master branch for n210, (v 003_002_003-50-gff40f2d) after that, uhd_find_device and uhd_usrp_probe functions properly, but the grc not executing and i received the following error: Traceback (most recent call last): File "/home/ahmad/usr

[Discuss-gnuradio] searched the mail list but nothing works: audio_alsa_sink[hw:0]: Device or resource busy

2011-09-15 Thread kingbase_gr
When I want to connect the signal to the sound card, an error occurs as below: --- audio_alsa_sink[hw:0]: Device or resource busy RuntimeError: audio_alsa_sink I want the signal to be output to the sound card, but the