I have a little Sony VAIO P series computer on which is installed Ubuntu 15.10 running LXDE. I've found that all audio played on the device is choppy, everything from MP4 videos played on VLC, to Skype, to Festival, is choppy. Here is a sound recording to illustrate:
aplay -l, I can see that the hardware playback device is HDA Intel MID ALC275. What could be going wrong and how could I try to fix it?