I'm not much into audio engineering, so please be easy on me. I'm receiving an audio file as input, and need to detect whether the speaker is male or female. Any ideas how to go about doing this?
I'm using php, but am open to using other languages, and don't mind learning a little bit of sound theory as long as the time is proportionate to the task.
I can't really provide specific insight to this problem , but I'd start by reading the following article: Gender Classification from Speech.
That should at least give an idea of the concepts / methodologies involved (this article describes this quite well as far as I can tell).