Hi Chris,
You might try 'pavucontrol' as suggested to me by Kyeong Su Shin. Since
you are operating outside the GRC environment, it might help. Also, I
would compare the Python code generated by GRC with your modified code
to see areas which address the audio.
Good luck,
---
Barry Duggan
On 2019-08-26 10:30, Chris Gorman wrote:
Hi Barry,
Thanks for your time and expertise. I should have been more verbose
in my email. I can get sound out of my code when I use the
gnuradio-companion program, but not when I run the snippet I gave you.
The purpose of the hacked code is to try to tie a 4x4 Qt.PushButton to
the various frequencies needed to make a Touch tone generator. (I
currently have it working with radio buittons, through
gnuraidio-companion, but want to use Qt.PushButtons instead.) I tried
your suggestion and can get the sound working, but not outside of grc.
I am using gnuradio-companion 3.7.13.5 on ubuntu 18.04. aplay -L
gives me lots of options but the one that appears to be default is...
sysdefault:CARD=Intel
HDA Intel, STAC9221 A1 Analog
Default Audio Device
I'm wondering if this is a sound system permission issue?
Thanks for your help.
Chris
Chris
On Mon, Aug 26, 2019 at 9:36 AM Barry Duggan <ba...@dcsmail.net> wrote:
Hi Chris,
You didn't mention your OS or your platform, but this works for a
Linux
system:
Using a terminal screen, enter 'aplay -L'
Here is an excerpt from my Raspberry Pi:
"""
default:CARD=ALSA
bcm2835 ALSA, bcm2835 ALSA
Default Audio Device
hw:CARD=ALSA,DEV=1
bcm2835 ALSA, bcm2835 IEC958/HDMI
Direct hardware device without any conversions
hw:CARD=Device,DEV=0
USB Audio Device, USB Audio
Direct hardware device without any conversions
"""
The Pi has a headphone jack, an HDMI port, and I have a USB audio
dongle. What you need to do is pick the appropriate entry for your
system, and the enter the Device Name in the Audio Sink properties.
For
example, I use "hw:CARD=ALSA,DEV=1" to get sound on my monitor.
On Windows or Mac, you might just enter "default:CARD=ALSA".
Good luck,
--
Barry Duggan
On Sun, 25 Aug 2019 17:27:31 -0400, Chris Gorman wrote:
Hello All,
I have been hacking at a python script with an attempt to pass two
frequencies to be added to audio sink. I can't seem to get any sound
out of the sound card, though. When I run the script I get "gr::log
:INFO: audio source - Audio sink arch: alsa". The script follows. My
python and QT skills are very poor, I simply started with
gnuradio-companion code and tried to hack the result. Can anyone see
where I might fix this?
Thanks in advance.
Chris
<snip>
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