Greetings, RE **I am in the process of acquiring a Surround Mic. Ideally with the Ambisonic technology. Has anyone ever used the Core Sound Tetramic and if so, could you provide a evaluation. Thank you. **Laurent
**if you can live with flimsy connectors and four separate phantom power adapters, its price/performance ratio is hard to beat. for me, it's too noisy for soft nature ambience recordings or very soft music in the far field, but for everything else it's great.** **brahma would be an even cheaper alternative. it is not field tested yet, but it comes with a simple box with four xlr outs, powered by phantom or by a nine volt battery.** Eric C's two cents worth: I've been using a TetraMic in the field and with very good results. I have to agree about the noise. It might be fair to state (if this is true) that Ambisonic mics, in general, tend to be noisier because the noise of four capsules is additive. That is, noise isn't averaged or subtracted as with correlation measures made with multiple mics. I don't use FFT filtering (too many artifacts), and correlation measures would sort-of defeat the purpose of each elements ability to pick up 'different' (uncorrelated) sounds. But the IR cal method would allow the TetraMic to be used as a sound power probe--a very interesting concept. I suppose the flimsy connectors are needed to keep size small? Something like the Game Boy connector (later to be used as FireWire connect) might be more rugged, but not circular (thus making it more difficult to machine the mic's body). One does have to be careful with connectors and wires when using a TetraMic. The link and video regarding the Brahma was interesting, but seemed a lot like the TetraMic in concept (which, in turn, based on work of Gerzon et al). Both manufacturers make clear reference to the origins of their respective mics. My question regarding the Brahma is that of cost. While mic elements alone aren't terribly expensive, the cost of labor can be high. Careful calibration is labor-intensive, and this might be sacrificed if production or demand booms. Words like 'cheaper alternative' are vague (don't mean to be rude): Should the buyer expect to spend $200, $600, ?? I am looking forward to the availability of the Brahma, but would like more info regarding actual price and anticipated release date. Thanks. Best regards, Eric C. (alias El Diode in my electronics classes) -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20131102/3743c24d/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
