A mediocre recording of the nyc subway, with the robot announcer saying "stand clear of the closing doors". I am releasing this sample into public domain, ignore the cc license.
This is the taxi stand outside the avalon dance club in hollywood, ca. One can hear a mixture of armenian chattering, traffic driving by, and the reverberant music coming from the inside of the club.
Deisel locomotive standing and filling air brakes. Then bell, and train pulling away with horn. Recorded from about 15 ft. Away. About 100 cars. Recorded in hot springs, north carolina.
Recording of an hvac standing ac unit with loud compressor noise and rattling impeller. Unit turning on and off, accompanied by an electronic beep. Feel free to use this sound; no attribution required. Feel free to write me in the comments what you used this sound for. Equipment:røde ntg2sound devices mixpre-3 ii. File:wavmono48 khz24-bit.