For curiosity I've started writing a mobile application that would detect when there's audio feedback on the live stage and what's the feedback frequency(ies) so that an sound engineer (SE) can turn down the corresponding band(s) on the EQ. And I'm wondering if anyone else is interested in this problem. I'm asking myself some questions regarding the fight with feedback. Could you please take a look at them and help me?
- Does the frequency need to be detected exactly or just seletecting its EQ band is sufficient and more interesting?
- Is for less experienced SEs detecting the corrent band by ear hard (neither fast, not precise) and more more experienced ones a lot easier?
- Does even for experienced SEs detection by ear get worse if they're tired after many hours of work and/or would they like to confirm his guess by an exact measurement?
- There exist some general purpose real-time spectrum analyzer hardware units and mobile app. Do you thing a specialized app that would directly tell you the corresponding band on your EQ (in addition to the precise frequency) would be more beneficial?
- Also there exist some expensive hardware feedback eliminators that automatically adjust the EQ on your behalf. Some people tell that they are too aggressive in killing feedback at the expense of making the sound too dull. Do you thing a more lightweigtht and half-manual thing like a mobile app could serve better?
- Do you thing that maintaining the list of feedback frequencies that occured during the live performance would be useful? Eg. to quickly eliminate any of those if it occurs again.
- Is it important that the feedback detection ignore normal instrument and voice tones that do not make a feedback?
- Is the almost real-time responsiveness (eg. delay of just several milliseconds) really important?
- Do you think that it is critical that the app just gets along with the built-in microphone or connecting to an auxiliary audio outout from the mixing console is not a problem?
- Would a phone or a tablet with bigger screen be better suitable for such an app? Or it doesn't matter?
I'd be very grateful if you could look at those question and answer any one of them? Besides you raise your karma I could fine tune the hand-crafted app to your specific needs and provide you with a early beta versions :)
Thanks a lot!