2 Minutes and 30 Seconds of Urban Noise

I visited 9 sites in Pittsburgh’s East End and recorded the ambient noises that existed in these locations.  I then created and analyzed spectograms of each 2 minute 30 second recording.

sounds_draftprint2_smalljpegg

[PDF 36″ x 84″ 45.6 MB]

By cross referencing the spectogram and the recording I was able to locate and identify sounds that I would not have noticed in the recording alone.  The distant siren in recording 7 was so faint that I didn’t realize it was there until I noticed a bizarrely perfect sine wave pattern in the spectrogram.

My Google Location History for 01 February

My Google Location History for 01 February

Recording Locations

Recording Locations

Full resolution spectograms without annotations:

01_oakland_step02_oakland_blvdpark_car03_schenley_playground_car04_schenley_underbridge_wall05_schenley_greenfield_stump06_schenley_pocusset_stump07_schenley_hollow_wall08_squirrelhill_1311bennington_car09_walnutstreet_parkingmeter

 

A comment brought up during our review was that these diagrams appear to be foreshortened like a landscape.  The linearity of the diagrams appear to define a horizon and the longer wavelengths of the deeper sounds appear larger in the lower part of the image.