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A note from the archivist in 2025: This was the text/images associated with this post in drafts. The text isn’t congruent with the recording, and neither is the diagram. It mentions locations that aren’t the title; and given the lack of keynotes from the image, I am unsure the recording was captured where the title indicates. If you can decode it, my hat’s off to you.
Location: This recording was taken in the machine shop in Harvey Mudd College’s Libra Complex. The Libra Complex is Mudd’s series of tunnels and halls that lie below the academic half of campus. The halls are filled with classrooms and labs. Specifically the room of this recording is an Engineering machine shop filled with student workers and high-end machines such as computer-led lathes and presses. The shop itself lies underground which separates the sounds in the environment from the areas around them. This also adds an interesting soundproofing between many of the rooms as the noise has to penetrate earth walls between rooms. The room has machines lining the walls, spaces for shop proctors (read: instructors) and for students to work, and a radio on a table at the far end for music.
Recording: I made this recording with the TASCAM DR-40 Sound Recorder by setting it on a small tripod placed on a table about 3 feet off the ground. The table was placed near the middle of the main lobby of the dog-wash, facing toward a sink/hairdryer machine that a dog was being cleaned on. The recorder was underneath a speaker in the ceiling playing music.
Description: The resonance of this space does not cause any echoing, as the intensity drop seems to be linear, without any secondary peaks. The decay time is also relatively fast, which could either be caused by the placement of the recorder, or the acoustic properties of the corridor.




Walking on road (Keck)
Walking on sand (Pitzer)
Pitzer campus

















































































