The sound is produced in an enclosed area. The microphone is placed at the bottleneck in order to clearly record a very stereotypical noise. I recorded it with a zoom h4n. I select a part of the recording and created an echo effect with reverberations. This sound can be used in an enclosed area with the goal of focus on it, as a clear mark that something important is being opened or revealed.
Lift, 1960s 2, poland, outside, inner cage and door open, person steps out, floor sinks. Stereo mixdown of an ms recording, using sennheiser 416 (m) and some small diaphragm figure of 8 akg.
This is the sound of collecting keys and using them to open and close a door. Este es el sonido de recoger unas llaves y usarlas para abrir una puerta que conduce al exterior. Recorded with apple watch series 6.
Mixed voices chattering in the cavernous open lobby of a multifloor medical building. One woman coughs repeatedly. Later a man laughs. Towards the end a door clicks open. Please enjoy this sample -- i got sick with a cold from recording it (probably thanks to the coughing lady).