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.
Authors:
Ambrose, Stephen D.; Schulein, Robert; Gido, Samuel P.
Affiliations:
Asius Technologies, Ongmont, CO, USA; University of Massachusetts, Amherst, MA, USA(See document for exact affiliation information.)
AES Convention:
130 (May 2011)
Paper Number:
8361
Publication Date:
May 13, 2011
Subject:
Audio Equipment
Click to purchase paper as a non-member or you can login as an AES member to see more options.
No AES members have commented on this paper yet.
To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.
If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.