I am trying to develop a small-scale location-specific sound emitting project but I'm not sure if that is even possible with Arduino. I'm setting up 3 locations (points A, B, C) within a small room and when the person approaches point A, a certain sound will be emitted. It will be a different sound for point B, then for point C.
Ultrasonic sensors and an audio player should do it based on that description.
It is trivial to emit different tones. For recorded sounds, this is popular.
I too recommend the DFR MP3 Player for the customised sounds.
The detection method will depend on the application details. Options could also include carefully positioned PIR sensors. And micro switches or capacitive proximity sensors. Tell us more about the intended use to get more ideas.
Thank you for all the inputs!