diff --git a/asoundrc b/asoundrc
new file mode 100644
index 0000000..d7ca45a
--- /dev/null
+++ b/asoundrc
@@ -0,0 +1,62 @@
+pcm.MAUDIO {
+	type hw
+	card rockchipes8316c
+	device 0
+	subdevice 0
+	nonblock true
+}
+
+ctl.MAUDIO {
+	type hw
+	card rockchipes8316c
+	buffer_size 10000
+	period_size 8192
+}
+
+pcm.loopin {
+	type plug
+	slave.pcm "hw:Loopback,0,0"
+}
+
+pcm.loopout {
+	type plug
+	slave.pcm "hw:Loopback,1,0"
+}
+
+pcm.multi {
+	type route;
+	slave.pcm {
+		type multi;
+		slaves.a.pcm "MAUDIO";
+		slaves.b.pcm "loopin";
+		slaves.a.channels 2;
+		slaves.b.channels 2;
+		bindings.0.slave a;
+		bindings.0.channel 0;
+		bindings.1.slave a;
+		bindings.1.channel 1;
+		bindings.2.slave b;
+		bindings.2.channel 0;
+		bindings.3.slave b;
+		bindings.3.channel 1;
+	}
+
+	ttable.0.0 1;
+	ttable.1.1 1;
+	ttable.0.2 1;
+	ttable.1.3 1;
+}
+
+pcm.pbnrec {
+	type plug
+	slave.pcm "multi"
+	hint {
+		show on
+		description "Alsa Playback & Record"
+	}
+}
+
+pcm.!default {
+	type plug
+	slave.pcm "pbnrec"
+}
diff --git a/audio_vis.sh b/audio_vis.sh
new file mode 100644
index 0000000..9418577
--- /dev/null
+++ b/audio_vis.sh
@@ -0,0 +1,4 @@
+#!/bin/ash
+clear
+arecord -q --period-size=50 --buffer-size=150 -r 4000 --disable-softvol -f U8 -t raw -D loopout | hexdump -e '"%02o\n"' | tr -d '*' | xargs -n 50 -r ./micro-utils/bin/spark -n -r
+