Saturday, July 30, 2016

Portable Pleiades Microphone

It would be nice to have an iPad iPhone headset as follows:


It may be like a normal white iPhone headset with the mic near the mouth. It sounds nice but the signal level is quite low, one has to increase Garageband's mic level to 10 and there is hiss.


So instead of the mic there can be a small mic connector. There we connect an external dynamic mic with Pleiades step up proximity compensating transformer connected to a Pleiadws JFET preamplifier.


All these can be modular or fitted inside the dynamic microphone's body.


The result is:


One cable only being always connected to iPad or iPhone.


The microphone is connected only when it is wanted.


A dynamic mic can give excellent studio quality (for example Michael Jackson on SM7 old version).


The Pleiades transformer made with a Magentec Nanocrystalinne core steps up the signal (voltage) without adding hiss and the number of primary turns dictate how much proximity bass is cut.


The dynamic microphone can then be used next to mouth or within 1in.


The microphone then captures the voice and almost nothing else.


The Pleiades JFET preamplifier further steps up the signal, matches impedances from high to low iPads input and is conveniently powered by the iPad's or iPhone's voltage delivered from therir mic headphone socket.


The signal then is so clean, noise free and high that the GarageBand's recording level control can be at say 4. The iPad's preamplifier cannot then add further noise and we end up with a true studio quality singing or speech.


The setup may be made extremely portable and we may end up with a high quality recording studio on our palm.



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