PythonGStreamer

Generating random tones

A python random oscillator stream:

import pygst
pygst.require("0.10")
import gst

pipeline = gst.Pipeline("mypipeline")
audiotestsrc = gst.element_factory_make("audiotestsrc", "audio")
pipeline.add(audiotestsrc)
sink = gst.element_factory_make("alsasink", "sink")
pipeline.add(sink)
audiotestsrc.link(sink)
audiotestsrc.set_property("freq", 800)
pipeline.set_state(gst.STATE_PLAYING)

import time, random

while 1:
	f = random.randint(200, 800)
	print "setting freq to: %d" % f 
	audiotestsrc.set_property("freq", f)
	time.sleep(1.0/random.randint(1, 10))

A command-line level analyzer

Level.py

A command-line spectrum analyzer

Spectrum.py

Other Examples

ListeningAndWatching