In This Section
Audibility of a CD-Standard A/DA/A Loop Inserted into High-Resolution Audio Playback - September 2007
Sound Board: Food for Thought, Aesthetics in Orchestra Recording - April 2015
Reflecting on Reflections - June 2014
AES Journal Forum
On the Study of the Ionic Microphone
In contrast to the conventional microphone with a moving diagram, this study explores the use of plasmas to create a diaphragmless ionic microphone. By performing FM demodulation of the shift in oscillating frequency of a high-temperature plasma, a useful audio signal was obtained. Increased output levels were observed with a decrease in the sound wave frequency. It was difficult to maintain consistent performance because the discharges in the air led to wearing of the electrode tip as well as adhesions of the discharge products. Results showed that the stability of the discharge corresponded to the nonuniform electric field, which was dependent on the formation shape of the high-temperature plasma, the shape of the discharge electrode, and the use of inert gas to protect the needle electrode. The authors review the experimental outcome of two ionic methods.
No AES members have commented on this report yet.
Subscribe to this discussion
Start a discussion!
If you are not yet an AES member and have something important to say about this report then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.