|  |  |  | GStreamer Base Plugins 0.10 Plugins Reference Manual |  | 
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| adderadder — Add N audio channels together | 
gst-launch audiotestsrc freq=100 ! adder name=mix ! audioconvert ! alsasink audiotestsrc freq=500 ! mix.
This pipeline produces two sine waves mixed together.
| << gst-plugins-base Elements | alsamixer >> |