Powerpoint 2010 - Bad Narration Quality

For a few weeks I have been using the "record narration" feature in Powerpoint. Never needed this before, because I was always speaking live when giving a presentation. But now with the advent of true online distance teaching, this feature becomes handy. But unfortunately, in Powerpoint 2010, this feature is not really usable. I can record the narration ok, but the sound quality is appalling. It sounds as if recorded with 8 bit, at 11 kHz, and results in absolutely unprofessional recording. In addition, the audio appears not to be compressed, but raw wave, judging from the file size increase which is caused by this. And there is no way of setting the quality, the coded, the bitrate, the compression or any relevant parameter. After searching the web for a solution, this problem is know. Apparently, Powerpoint 2007 did provide means for changing the sound quality through a panel with options. This was taken out in the 2010 version. Is this progress?