# gst-launch-1.0 audiotestsrc > Generate basic audio signals. > More information: . - Generate and play a sine wave: `gst-launch-1.0 audiotestsrc ! {{autoaudiosink}}` - Define what type of wave to generate: `gst-launch-1.0 audiotestsrc wave={{sine|square|saw|white-noise|pink-noise|ticks|...}} ! {{autoaudiosink}}`