Huge news for the audio community! The legendary D. B. (Don) Keele, Jr. has a brand new, reconstructed website at www.dbkeele.com.
The original site was over 20 years old, but this new one is built from the ground up on modern tech for faster updates and mobile compatibility. It's now the essential resource, featuring:
Over 60 technical papers
80+ full Audio magazines showcasing his loudspeaker reviews
This launch coincides with Don's 85th birthday! Please join me—Don's son, Kevin—in wishing...
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In my curator role, am cross posting the following content as it is embedded in a related thread and want to highlight for members that may have missed. :cool:
While his books are worthwhile reading, this is a great way to get an overview direct from a major audio researcher and valued contributor.
Thanks Floyd!
I have been getting a number of career/job advice from people I know. I find that the current online system of recruiting people maddening. Seems that resumes get filtered randomly and never get to hiring managers. So applying to jobs seems at best a random process.
I thought I create this thread to give people who want to have a job an opportunity to post here with the hope that someone reading the forum either has an open position, or can help others find one.
Conversely, if members...
Questions regarding how the Klippel NFS works are raised in many of Amir's speaker reviews. Thomas has suggested starting a thread on this topics and here I am. I am starting this thread with a brief description of the basic principles behind the NFS. You can find much further details on the theory in the DIY 3D speaker scanner thread.
What the Klippel NFS systems does is to approximate the speaker under test into the sum of a number of spherical wave expansion functions (source):
These...
It is resonances that are mainly responsible for lack of neutrality in loudspeakers, so the first task for competent speaker designers is to minimize them. After that spectral balance and directivity control need to be attended to. The industry standard measurement method, used by Amir, which had its origins in Canada while I was at the National Research Council, is excellent at revealing resonances. It seems that, historically, this company has studiously ignored the science and gone the...