I'm developing an application for PC that records microphone data in real-time, and plays it back after applying some effects.
I'd like to apply these effects only when a single known speaker is talking. The environment might include other people's voice and indoor noise (for example, a classroom or a restaurant).
Since that single speaker is also holding the microphone, I tried to simply filter input data based on a (configurable) volume level. This method is working but not very well, since sometimes the environmental noise might go above the threshold, or the speaker's voice might go below it.
Is there a better way to recognize a single speaker? I've read about speaker identification using feature extraction and HMM/GMM, but I'm not sure whether it is an overkill for my case.
I apologize if this it too vague. I'm new to DSP so I'm not really sure what additional information is needed to answer this. Thanks!
- Speakers usually speak one after another, but background chatter is possible.
- In addition, although the speaker is known, I do need some kind of an initial setup procedure (to adjust the application to that speaker).