Choosing a Hydrophone For Field Recording

hydrophone for field recording. Scroll down for a table of commercially available hydrophones, prices, and specifications. Resonant or Flat? I classify hydrophones on a spectrum from resonant to flat. (All transducers resonate at a certain frequency, but in this case…

Hydrophone Experiments II

…Conclusion: Stick with silicone or soft rubber for electret hydrophones. II. Hack Commercial Products After years of extensive hydrophone experiments, Mike Rooke concluded that modifying commercial fish-finders or raw hydrophone elements has advantages over making a hydrophone from scratch. This…

Hydrophone Experiments

…A quick “saucepan test”: http://www.zachpoff.com/site/audio/hydrophone-Test(Saucepan).mp3 Submerged in a sandy freshwater outlet that drains into the beach: http://www.zachpoff.com/site/audio/hydrophone-Rushing-Water.mp3 Buried in the sand (and loudly uprooted by a breaker): http://www.zachpoff.com/site/audio/hydrophone-Sand.mp3 Submerged in a tidal pool: http://www.zachpoff.com/site/audio/hydrophone-Tidal1.mp3 Submerged in another tidal pool: http://www.zachpoff.com/site/audio/hydrophone-Tidal2.mp3…

Hydrophone Review: Ambient ASF-1, ASF-2, Aquarian Audio, JrF

I’ve been building my own hydrophones for awhile, using them alongside inexpensive options from Aquarian Audio and JrF, but I always wondered how much of a difference I would hear with expensive professional hydrophones. I recently had the opportunity to…

Pond Station

…diversity. Mitigation is underway. Fingers crossed! June 2023 Switched streaming server infrastructure to increase reiability Re-positioned hydrophones for better sound Replaced right-channel hydrophone April 2023 Replaced one broken hydrophone, using 2 part urethane coating instead of plast-dip. Fixed buzzing noise…

Projects in Sound Art - Cooper Union - LP Manipulation

Syllabus: Project in Sound Art

…Lerman’s “Travelon Gamelon” bicycle piece and his guide for contact-mic construction David Dunn shows how to build a hydrophone, tubular contact mic, and ultrasonic “probe mic” in this pdf. Open Music Labs has a very helpful page about piezo products…

Take Apart An Electret Mic Capsule

Recently I was working on a hydrophone project and I needed to figure out how to disassemble an electret capsule and put it back together without ruining it. Robin Whittle has great photos, explanations, and specs concerning some specific capsules…

Building (or Buying) Contact Mics

…it and get some help. This is the help.” Aquarian Audio USA Hydrophone manufacturer with several preamps that work great with contact mics. There are options for “plug-in powered” 3.5mm mic inputs and phantom-powered XLR inputs. Stompville UK shop that…

Cheap Microphones for Ultrasound

This page documents my experiments using inexpensive microphone capsules to record ultrasound signals. I tested several capsules using a 192kHz audio recorder and cheap piezo tweater. For each mic you’ll see a spectrograph showing a frequency sweep through the ultrasound…

Wave Farm Residency 2013

…contact mics. http://www.zachpoff.com/site/audio/trio-for-rain-pots-contact-mics-excerpt.mp3 Sensor Workshop We taught a sensor-building workshop where participants made inexpensive hydrophones, contact mics, and light-listeners to plug into their portable recorders or smartphones. We kept it simple since it was the first time many of the…

UnionDocs Workshop: Creative Field Recording 2020

…as we contribute our own gestures back into the network of sounding subjects through domains like radio, sound art, music, and film. This workshop features listening sessions, hands-on recording demonstrations, introductions to novel sensors like contact microphones and hydrophones, and…

VLF Natural Radio Experiments

VLF (Very Low Frequency) radio waves vibrate at frequencies that overlap the human hearing range, although we can’t directly hear them. (Our ears sense physical waves rather than electromagnetic ones.) VLF radio is filled with “natural radio” emissions. Every lightning…