Plans for a 'sound-map' of Pittsburgh recording concentration of unique crosswalk signs..those things that bleep and bloop when it's safe to cross.  In this episode I found a couple of old recordings of crosswalk signals from Delaware (US) and Rotterdam ( Netherlands).  

Listen to 118:  bleepy bleepies  - sounds in everyday life from ZenGlop The Podcast on Apple Podcasts. https://podcasts.apple.com/us/podcast/zenglop-the-podcast/id1157771860#episodeGuid=http%3A%2F%2Fapi.spreaker.com%2Fepisode%2F40769815

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more notes on field recording here: https://www.zenglop.net/zenglop/field-recordings/

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