The sound input from a microphone is output from a speaker. Check device : BSHSAU01BK

Dependencies:   USBHostDac USBHost_custom_Addiso

Revision:
2:0b9331cde97b
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/USBHost_custom_Addiso.lib	Mon Apr 24 12:45:14 2017 +0900
@@ -0,0 +1,1 @@
+https://mbed.org/teams/Renesas/code/USBHost_custom_Addiso/#5c3ebf7372ee