Interval training will help https://www.musictheory.net/exercises/ear-interval https://www.musictheory.net/exercises/ear-interval Each interval has a unique "f

Interval training will help https://www.musictheory.net/exercises/ear-interval https://www.musictheory.net/exercises/ear-interval Each interval has a unique "flavor" and once you can hear them you should be able to hear multiple intervals at the same time, which effectively identifies the chord. (Admittedly for complex jazz chords it can get very difficult and you probably need more powerful tools, I can't say.)