Diaphonic Pump: A Sound-Activated Alternating to Static Pressure Converter

Ambrose SD, Schulein R, Gido SP. Diaphonic Pump: A Sound-Activated Alternating to Static Pressure Converter. In: AES Convention 130. Audio Engineering Society; 2011. Paper 8361. Available from: https://aes.org/publications/elibrary-page/?id=15828

@inproceedings{Ambrose2011_15828,
  author = {Ambrose, Stephen D. and Schulein, Robert and Gido, Samuel P.},
  title = {{Diaphonic Pump: A Sound-Activated Alternating to Static Pressure Converter}},
  booktitle = {AES Convention 130},
  note = {Paper 8361},
  year = {2011},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15828}
}

TY  - CPAPER
TI  - Diaphonic Pump: A Sound-Activated Alternating to Static Pressure Converter
AU  - Ambrose, Stephen D.
AU  - Schulein, Robert
AU  - Gido, Samuel P.
T2  - AES Convention 130
M1  - Paper 8361
PY  - 2011
DA  - 2011/05/06
UR  - https://aes.org/publications/elibrary-page/?id=15828
PB  - Audio Engineering Society
LA  - en
AB  - This paper discusses the operating principles and basic construction of a diaphonic pump, which is a newly invented device for harvesting the energy inherent in sound waves and using it to pump air, thereby pressurizing a vessel. Although this device is of general utility, the embodiment discussed in this paper is used to harvest sound energy from the speaker (balanced armature transducer) of a personal listening device (headset or hearing aid), and use this as a power source to inflate a bubble in the listener’s ear, thereby creating an acoustic seal. The diaphonic pump utilizes a natural asymmetry in the flow pattern when fluid is alternatingly pushed and pulled, back and forth through a small orifice known as a “synthetic jet”. Sound waves provide the alternating flow pattern across the synthetic jet orifice. Prototype diaphonic pumps were built, which attach to a back volume of a balanced armature transducer, and are small enough that the whole assembly, transducer and pump, can fit in a human ear canal.
ER  -