Comments for EarLevel Engineering

Comment on A gentle introduction to the FFT by Vadim

Vadim — Tue, 24 Jan 2012 21:55:06 +0000

The most clear explanation I have ever read! Must read! Thanks for the article!

Comment on A gentle introduction to the FFT by Stephen

Stephen — Tue, 10 Jan 2012 03:12:11 +0000

Thanks for posting this. As a VLSI student trying to understand FFT this was very helpful in giving me a basic understanding.

Comment on A bit about reverb by Vadim

Vadim — Mon, 26 Dec 2011 21:26:19 +0000

Very good blog! Thank you!

Comment on A bit about reverb by Nigel Redmon

Nigel Redmon — Tue, 22 Nov 2011 20:49:48 +0000

Yes. Unfortunately, Bill’s work hasn't been available for several years. You can find his projects page here, but the “list of publications” link is stale there as well. His most interesting paper is Efficient Convolution without Input Output Delay, which describes the basis for convolution reverbs. You should be able to get it through aes.org.

Comment on Sample rate conversion: up by Nigel Redmon

Nigel Redmon — Tue, 22 Nov 2011 20:38:32 +0000

Yes—you can use a minimum phase filter. The only consequence is that you’ll be altering phase in addition to changing the sample rate, and maybe you have a good reason to do that.

Comment on A bit about reverb by Tobiah

Tobiah — Sun, 20 Nov 2011 18:58:56 +0000

The link to the book at the bottom is broken.

Comment on Sample rate conversion: up by MattWard

MattWard — Fri, 11 Nov 2011 17:56:16 +0000

I assume one could also use a minimum phase filter? Are there any unseen problems one may come across with that?

Comment on The sound of dither by Richard

Richard — Fri, 04 Nov 2011 13:39:16 +0000

Finally an excellent audio demonstration of why dithering is used. I’ve been dithering my final mixes at the last mastering stage on the basis that it was recommended by professionals. I knew that dithering had something to do with improving the “quality” of the final mastered audio but I couldn’t really “hear” why. With these audio examples you can actually hear the disturbance to the waveform in the tail of the non-dithered sine wave as it fades away. Thanks for this excellent explanation.

Comment on Pole-Zero placement by Nigel Redmon

Nigel Redmon — Sun, 18 Sep 2011 17:00:08 +0000

Indeed. A log frequency option would be nice too (and an arbitrary number of poles and zeros), if I can find time to update it.

Comment on Pole-Zero placement by Ankit Bhurane

Ankit Bhurane — Sun, 18 Sep 2011 13:17:10 +0000

Also the poles an zeros should be able to vary on the plot itself with/ instead of slider …