I'm trying to parse the recorded name attribute in Active Directory (msExchRecordedName) on a Linux system. I'm using the OpenLDAP version of ldapsearch:
% ldapsearch -x -t -h ad.server.name cn=username msExchRecordedName
I get the binary contents of the msExchRecordedName attribute successfully dumped to a file in /tmp.
But here's where I get stuck. This file seems to have no resemblance to an audio file. It doesn't have a WAV header, for example.
I checked the encoding format for voice recordings:
This shows up as:
I then try using the sox command to generate a wav file with this format, from the raw data:
sox -c 1 -r 8000 -t raw -U msExchRecordedName.raw recordedname.wav
But when I play this file, I get a static-filled tone. I tried this with a number of users whose name recordings should be correct, but can't get it to work.
Any suggestions on how to decode and parse this attribute?