Feedback frequency trainer

[dmerchen]

You might want to check out TrueRTA. They've various versions of if ranging from a free solution to a 1/24 octave paid version. Part of all their versions is a tone generator as well as a frequency sweeper. Provides a great tool for spotting feedback as it happens, in the case of the free version, it's only sensitive to full octaves, but it gives you a general idea where it's occurring. If you can find something like Smaart, that has a live spectrograph, it makes finding feedback clear as day. Unfortunately Smaart is rather pricey for most.

Once you've dialed your software, it's a matter of notching out that frequency, either through your system processor, or an eq somewhere in your signal chain.

[daveparkerengin]

Just taken quick glance over this post. 1. be careful with feedback destroyers, They search for all frequencies with feedback characteristics. This means if a note is played on a keyboard for a sustained time the feedback destroyer would think its feedback and cut it. 2. You have frequencies that cause problems in every system one problematic area is around 4K so some are easy to get rid of. 3. Practice makes perfect, the more live sound you do the better you get at recognizing these frequencies.

[daveparkerengin]

On top of that if any one in your church has a Mac running a version of Logic theres a tone generator in that.

[Tim Padrick]

I'm an old guy and am still terrible at calling frequencies. So I have Studio Six Digital's FFT app on my iPhone (I believe it runs on the iPod Touch as well). FFT is accurate enough to zero in with a parametric EQ. See http://www.studiosixdigital.com/fft_..._new_feat.html

[michaelnorman]

you can use Sound Forge 9 as it as a tone generator in it as well that i have used at school to test my hearing range