Editing Audio Sink

Jump to: navigation, search

Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then save the changes below to finish undoing the edit.
Latest revision Your text
Line 1: Line 1:
 
[[Category:Block Docs]]
 
[[Category:Block Docs]]
 
 
Allows a signal to be played through your speakers or other audio device
 
Allows a signal to be played through your speakers or other audio device
  
 
== Parameters ==
 
== Parameters ==
  
=== Sample Rate ===
+
# '''Sample Rate''': Audio sampling rate used, click the drop-down menu to see popular rates.  Note, not all sampling rates will be supported by your hardware. For typical applications, this should be set to 48kHz.  
 
+
# '''Device Name''': Leave the device name blank to choose default audio device. ALSA users with audio trouble may try setting the device name to plughw:0,0
To set the Audio sampling rate, click the drop-down menu to see popular rates.  Note: not all sampling rates will be supported by your hardware. For typical applications, this should be set to 48kHz.  
+
# '''OK to Block''':
 
+
# '''Num Inputs''': The audio sink can have multiple inputs depending upon your hardware. For example, set the inputs to 2 for stereo audio, or 1 for mono.
=== Device Name ===
 
 
 
Leave the device name blank to choose the default audio device. Selecting a specific device name depends on the OS.
 
 
 
==== OSX ====
 
 
 
On OSX, go into the System Preferences, click on "Sound", and then the "Output" tab. The listings under "Name" contain the exact device names currently available; if a new audio device is attached to the computer then a new name will appear -- for example "Headphones" for some Macs. Since most such device names contain spaces, make sure to put quotes around the name argument, for example:
 
 
 
    spectrum_inversion.py -O "MacBook Pro Speakers"
 
 
 
==== Linux ====
 
 
 
On Linux, typical choices include:
 
* hw:0,0
 
* plughw:0,0
 
* pulse
 
 
 
For ALSA users with audio trouble, follow this procedure:
 
* from a terminal window enter:
 
<code>aplay -L</code>
 
* find the entry such as:
 
<pre>
 
hw:CARD=Generic,DEV=0
 
    HD-Audio Generic, ALC662 rev3 Analog
 
    Direct hardware device without any conversions
 
</pre>
 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;from the list which matches your device. To use an HDMI monitor with speakers, find an appropriate entry with "HDMI" in it.
 
* use the first line of that entry (e.g. "hw:CARD=Generic,DEV=0") as the device name. Unless the name has spaces in it, the quotes are optional.
 
 
 
* For issues or debugging, see [[ALSAPulseAudio]].
 
 
 
==== Windows ====
 
 
 
On Windows, go into the Settings, cllck on "System", click on "Sound", and then the "Output" tab. The listings under "Name" contain the exact device names currently available; if a new audio device is attached to the computer then a new name will appear, for example "Headphones". Since most of the device names contain spaces, make sure to put quotes around the name argument, for example:
 
 
 
    "Speakers (Realtek High Definition Audio)"
 
 
 
=== OK to Block ===
 
  
On by default, which should be used when this sink is not throttled by any other block.
+
For issues or debugging see https://wiki.gnuradio.org/index.php/ALSAPulseAudio
  
=== Num Inputs ===
 
The audio sink can have multiple inputs depending upon your hardware. For example, set the inputs to 2 for stereo or 1 for mono.
 
  
 
== Example Flowgraph ==
 
== Example Flowgraph ==
  
This flowgraph should play a 1 kHz tone out of your speakers.  Note that you don't need a throttle block, the Audio Sink should throttle for you.  If you do end up using an already-throttled signal source, then set "OK to Block" to No.
+
This flowgraph should play a 1 kHz tone out of your speakers.  Note that you don't need a throttle block, the Audio Sink should throttle for you.
  
[[File:audio-sink-ex.png|400px]]
+
[[File:audio-sink-ex.png|500px]]

Please note that all contributions to GNU Radio are considered to be released under the Creative Commons Attribution-ShareAlike (see GNU Radio:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To edit this page, please answer the question that appears below (more info):

Cancel | Editing help (opens in new window)