Soundy 1 Posted February 16, 2011 We've been doing drive-thru intercom systems for years, but I've run into a situation here that the boss doesn't have an answer for, and with my audio background, I've been charged with "just making it work". Pretty basic setup: speaker post by the menu board, single speaker at about car-window height, half-duplex operation, and a 3M D-15 intercom base in the store. Problem is, the speaker works TOO well when functioning as a mic, and picks up as much car/engine/traffic noise as it does voices... although it seems to be very selective, particularly to frequency - some voices come through clearly, others are drowned out be ambient noise. My thinking is, I need to make the speaker more "directional", whether by putting a tube in front of it, or what... that, or see if the base will support a separate mic and speaker, and add some sort of directional mic to the post. Anyone got any other ideas??? Share this post Link to post Share on other sites
Ken Layton 0 Posted December 6, 2011 How about inserting a graphic equalizer into the audio chain to filter out engine noises? Share this post Link to post Share on other sites
