Actually I have to completely disagree. Technically this is very hard to get right, monetizing it is a lot easier.
It is quite hard, believe me. Definitely not a weekend project. When it's as simple as recognizing clean audio, it's indeed not very hard. The problems start with (a) background noise (b) karaoke and mono audio input as without stereo channels removing the vocals is very hard (c) radio stations and television broadcasters often speed up songs a bit to fit in the timeslot.
The monetizing bit is a lot simpler. I can't really talk about that because of NDAs I've signed but as a hint, think about B2B instead of selling it to consumers. What big companies need to track music? How could audio recognition help them?
It is quite hard, believe me. Definitely not a weekend project. When it's as simple as recognizing clean audio, it's indeed not very hard. The problems start with (a) background noise (b) karaoke and mono audio input as without stereo channels removing the vocals is very hard (c) radio stations and television broadcasters often speed up songs a bit to fit in the timeslot.
The monetizing bit is a lot simpler. I can't really talk about that because of NDAs I've signed but as a hint, think about B2B instead of selling it to consumers. What big companies need to track music? How could audio recognition help them?