For a study project I’m looking into the possibilities of ANC for DJ headphones. When studying ANC I was wondering if it’s possible to do it without the use of microphones. Here’s what I propose:
When DJ-ing there’s one channel for music that goes into the room and to your monitors. The other channel goes to your headphone to mix in the next song. With ANC in your headphones you are able to cancel out noise in order to hear the music in your headphones better. The concern with ANC is that it works best with regular patterns (engine sounds) and that the ANC interferes with other equipment (phones etc.) therefore it’s not very suitable for DJ-ing. My question is whether it would be possible to send the signal that goes to the room (and monitors) directly to your headphones (via cable) and than have a DSP converting the sound to the opposite sound waves? Would this eliminate the need to recognize patterns in sound as is the case with normal ANC? And most important would it actually be better for DJ-ing than normal ANC (or PNC).
I made a little illustration of the concept to make it more clear (hopefully).
(Circle is ANC, dashed line is proposed solution) (since I can't upload the image i put in this link-->) https://www.dropbox.com/s/19s6r7uubkws9om/Direct_ANC_Concept.jpg (all images are from TheNounProject)
Any feedback is welcome.