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+# Cava v0.4+ Audio Visualizer - PulseAudio Setup
+* tutorial video: [Link](https://www.youtube.com/watch?v=ud_8Up2E_PE)
+* offical website: [Link](https://github.com/karlstav/cava)
+
+### install requirements
+    cava pulseaudio
+
+### list pulseaudio sources
+
+    pacmd list-sources | awk '/index:/ ||/name:/ || /device.description/'
+
+
+    # example output:
+    index: 4
+        name: <alsa_input.usb-NA_Lenovo_Wireless_Headset_W770-00.analog-mono>
+                device.description = "Lenovo Wireless Headset W770 Analog Mono"
+    index: 5
+        name: <alsa_output.pci-0000_00_14.2.analog-stereo.monitor>
+                device.description = "Monitor of Built-in Audio Analog Stereo"
+
+
+### configuration
+    vim ~/.config/cava/config
+    
+
+    # you can use the index number or by name for the source
+    method = pulse
+    source = alsa_output.pci-0000_00_14.2.analog-stereo.monitor
+    ; source = 5
+
+### references
+- https://www.youtube.com/watch?v=ud_8Up2E_PE
+- https://github.com/karlstav/cava
+
+### contact
+
+                 _   _     _      _
+      __ _  ___ | |_| |__ | | ___| |_ _   _
+     / _` |/ _ \| __| '_ \| |/ _ \ __| | | |
+    | (_| | (_) | |_| |_) | |  __/ |_| |_| |
+     \__, |\___/ \__|_.__/|_|\___|\__|\__,_|
+     |___/
+
+- http://www.youtube.com/user/gotbletu
+- https://twitter.com/gotbletu
+- https://plus.google.com/+gotbletu
+- https://github.com/gotbletu
+- gotbletu@gmail.com
+
+