--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/aud-c139/handheld.src	Tue Apr 05 06:22:50 2022 +0000
@@ -0,0 +1,18 @@
+# C139 handheld audio mode, currently based on the register readings
+# provided by Das Signal in 2021-11.
+
+mic default {
+	gain 2		# value reported by DS for the active call state
+	output-bias 0	# C139 uses 2.0V
+}
+
+# We are going to configure downlink FIR and PGA when we get a better
+# test setup - run with safe defaults for now.
+speaker ear {
+	gain 0
+}
+
+sidetone -23
+
+# C139 AEC config for handheld mode
+aec-new 2 1 0x14 0x4CCC 0x59AD 0x7500 0 0x1000 0x1000 0 4 0x40