Author Archives: Dion Sorrell

Balloon pop at Bridges Hall of Music (“Little Bridges”, Pomona College, Claremont Ca.


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Little Bridges Balloon Pop

Location. 150 E. 4th Street, Claremont, CA 91711
Concert Information: 909-607-2671

Recording setup. Hold 17″ Diameter Balloon 3 feet above the stage floor, 10 feet from the front edge of stage. Recorder set 6 center 6 rows from stage center

Recording Device used. ZOOM H2N Record settings: Central Mic – ON

Reverberation Times. Drop to 30dB .89 seconds, Drop to 50dB 2.14 seconds, Drop to 60dB Did not drop to 60dB, Seconds to reach minimum 1.54 seconds, Seconds to return to Pre Pop 2.3 seconds

Audacity Acoustic description. The Spectrogram reveals frequencies peaking a 7000 Hz and decreases over 1.5 seconds to 1000 Hz.

Overall, the spectrogram shows the a long duration of reverberation over the whole audible hearing range,

Ambient recording near Pitzer admissions office



The soundscape recording was made at Pitzer college in front of the admissions office next to the Mesa parking lot. The ZOOM H2N recorder was placed on a low rock wall.

About the soundscape.

Keynotes: Keynote sounds in this soundscape include that of air ventilation that can be heard in the background throughout the recording, The wheels of small electric vehicles,footsteps of people walking by, A leaf is heard scraping the ground blown by the wind. There are a fair amount of bird sounds and frequent noise of small airplane traffic as the building is near a municipal airport. A car starting and driving by indicates this is near a parking lot.

Soundmarks: The soundmarks do not indicate clearly where this place is. There is an incongruent mix of natural, mechanical, artificial and human sounds in seeming random order.

Signals: The small electrical vehicle activate a beeping sound when they back up and this is a signal that is well known..

Archetypes: The small airplane traffic indicates that this is an area that may contain an airport.