Digital audio recorders have a hard drive or use flash memory to store data. Audio that is recorded onto a digital audio recorder is in the form of a file. This may be an MP3 or WMA audio file, depending on your model of audio recorder. Files need to be deleted from the recorder to record additional audio onto the device. However, after a file is deleted, you may still be able to recover the data if it is needed. Tips Writer Bio

How to Retrieve Deleted Files From a Voice Recorder - 15