Looking for a app similar to the Dog Whistle for the iPhone

Stuart Pullinger s.pullinger at elec.gla.ac.uk
Thu Apr 23 18:18:51 CEST 2009

Adam Jimerson wrote:
> I mean like playing a tone, the same tone, but at different pitch like
> 67Hz as an example
It can be done from the command-line with gstreamer:

gst-launch audiotestsrc freq=67 volume=0.8 ! alsasink

(It's very quiet!)

You may have to install a few extra packages via opkg eg:

opkg install gst-plugin-audiotestsrc
on shr-testing or using the direct address:

gst-inspect audiotestsrc
fo more info.


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