Recent content by andyc56

Please see this post.

On a related topic, people may be interested in the Speakerbench youtube channel, which has some helpful videos about Speakerbench and measurement techniques. In addition, there's a really interesting paper by Claus Futtrup and Jeff Candy (in PDF format) called Physical Accuracy and Modeling...

That would point to a bug or incompatibility of ASIO4All with certain nVidia-based HDMI setups then. Thanks for checking.

It might be interesting, just for the sake of Science™, to see whether the problem returns when WDM-KS (kernel streaming) is chosen for the backend in FlexASIO. If it works fine, that would shoot the "bad nVidia kernel streaming driver" hypothesis out of the water and instead point to a...

The ASIO4All software implements the ASIO Application Programming Interface (API) using kernel streaming "under the hood". Apparently the kernel streaming sound drivers provided by nVidia for HDMI have caused problems with ASIO4All in the past, as reported in the AVS REW megathread. FlexASIO...

I second that. I've had sound glitches with AMD-based systems and ASIO4All that were fixed using FlexASIO. I fixed the glitches as follows: In the REW Preferences, Soundcard dialog, set the devices to "FlexASIO" and set input and output devices appropriate to your setup. In the REW FlexASIO...

From what I've seen by looking through the service manuals of sub amps having continuous phase controls, these phase controls actually implement a first-order all-pass filter using op-amps. A first-order all-pass filter has a flat frequency response magnitude, and a phase response that...

Equalizer APO works with the default sound device (and optionally with non-default devices using DirectSound) and loads itself into the system at boot time. So if your player software is configured to use the default Windows sound device or the named device operating in DirectSound mode...

Here's a video that shows how to disable the crossovers in the 2x4 HD

Speaker designer Matt Grant has done some preliminary testing of the UMIK-2. He observed higher distortion than the UMIK-1, and internal mic preamp clipping at a level 20 dB lower than the mic's rated SPL.

Floyd has said in another thread that the speakers were mounted that way because of earthquakes. They are also upside down. Here's the post where he talks about that. https://www.avsforum.com/threads/revel-owners-thread.710918/post-56278166

I noticed that PDF is not searchable. This link points to the book in .djvu format. If you're on Windows, you can download WinDjView, and a search for "minimum phase" without quotes will find all the matches.

The earliest, and AFAIK original treatment of this topic was from Hendrik Bode's 1945 book "Network Analysis and Feedback Amplifier Design". There used to be a PDF of the book at archive.org, but it looks like it's been taken down.

I found a PDF of what looks like a preprint of this paper in case anybody is interested.

In searching the web, I stumbled upon a PDF of the article by Candy and Futtrup, which may be of interest.