The Brownian or thermal noise limit has been reached up to frequencies of about 50 kHz in air using an axially symmetrical two-beam interferometer whose pellicle beamsplitter bulges under sound pressure. Frequency spectra of the Brownian noise observed in hydrogen, air, and CC12F2 are shown to be correlated to cavity resonant modes (or echoes) within the microphone.

Author: Young, Niels O.
Affiliation: Block Associates, Inc., Cambridge, MA
AES Convention: 31 (October 1966) Paper Number: 489
Publication Date: October 1, 1966

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.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

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.