I have written a code to record audio and save it to below file location.
private String getFilename() {
String
Plug in your device and run adb shell which will get you a command shell on your device. You don't have permission to read /storage/emulated/ but since you know it's in subdirectory 0 just go cd /storage/emulated/0 and you will be able to look around and interact as aspected.
Note: you can use adb wirelessly as well