Talk:Gain before feedback

A fact from Gain before feedback appeared on Wikipedia's Main Page in the Did you know column on 11 May 2011 (check views). The text of the entry was as follows:

Did you know... that gain before feedback is reduced when using multiple microphones for live sound?

A record of the entry may be seen at Wikipedia:Recent additions/2011/May.

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Advanced techniques

I can personally attest to the fact that a bit of straight delay and/or pitch shift can increase GBF. The Rane Note by Dana Troxel discusses delay in theory, and my experience confirms it in practice. The telephone interfaces made by Telos (Telos Link, Telos Hx1 & Hx2, Telos One x Six, and Telos One) use "imperceptible" pitch shifting to increase GBF. An AES paper by my acquaintances Enrique Perez Gonzalez and Joshua Reiss says that up to 3 dB of GBF can be obtained by small amounts of pitch shifting, but that it is only appropriate for speech applications, not music. Binksternet (talk) 06:40, 16 May 2011 (UTC)[reply]

The {{dubious}} tag is on straight delay. GBF techniques including pitch shift are mentioned in the Rane ref. Straight delay is not mentioned. IME introducing (additional) delay has, at best, an unpredictable effect on GBF. --Kvng (talk) 17:31, 18 May 2011 (UTC)[reply]

Looked again after years. Figure 2 and the description following does actually cover this. ~Kvng (talk) 16:54, 17 October 2019 (UTC)[reply]

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