While watching the EQ video, I was thinking that a chart showing the various instruments and associated EQ frequencies discussed by Alan in the video would be useful to have. At the end of the video, it hinted that something like this is the '/files' section of the site. I did find the various links under '/files', but not one of such a chart. A suggestion would be that one be created and posted here for everyone. Would be handy to have, and a nice document to have in hand while watching the video.
That's a very good idea. Thanks. We'll definitely look into that. Some materials have always been part of the plan to offer separately, and some - possibly such as this - we knew may simply be requested once the videos were released.
Hi,
I've found an interactive version of the chart that shows frequency ranges for different instruments and some intresting added information that Alan introduced in the Eq video.
Here's the link:
http://www.independentrecording.net/irn/resources/freqchart/main_display...
Of course it would be nice to have a printable version of this to keep it hany in the studio, but this is a great start.
Hope this helps,
alf
Hey Guys - great material. I've really been enjoying the series. You need to make a correction to your audible frequency range chart at approximately 5 minutes in though before this goes to disc. It shows the scale on the left starting at 30KHz, 50KHz, 100KHz and 500KHz which of course should really be expressed in Hz instead of KHz. Not even when I was 19 (or anyone else but the dogs for that matter) could I hear 30KHz. Ah the wonders of copy and paste.
Keep up the great work!
This may be beyond the scope of this series, however I was surprised to not hear any mention of how the electronics of an EQ device can and do affect the phasing of the frequencies being boosted or lowered through an EQ device. To effectively change the EQ of any frequency, introduces (depending on the quality of the device) slight changes in the phase of the frequencies due to the RC time constants of the electronic circuits that make up the EQ device. Individually this may not be noticeable, but as EQ's are "summed" or cascaded together in the audio chain, unwanted frequency boosts and cuts and distortion can become noticeable. Just thought it should have gotten a mention. In the radio broadcast industry, it is imperative to run a flat audio chain so the end user (the listener) can decide how they want to adjust the tone on their listening system. EQ in my field is a band-aid or tool to “flatten” the response of the system. The one area we can use EQ is in post production of say, a radio commercial. EQ can achieve many of the effects Alan mentions. Usually left in the hands of an unskilled ear, EQ is overused, used for the wrong reasons and then introduces artifacts in the process. Having the source audio as clean as possible to start with, is always the better way to go as Alan hinted in the series.
Ed Noyes - Radio Broadcast Engineer
alf,
Thank you very much for posting the link. A really logical and very helpful website.
Thanks again!
bob katz book on mastering comes with a classic poster relating frequencies to instruments