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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: RE: what is your most shocking wikileakesque revelations about the audio industry in the last 3 years? posted by Don Till on December 13, 2010 at 17:53:16:
I remember seeing that proposed -- predicted, actually -- back in the 70's. The essential idea being that a recording would contain a mathematical model of the hall. The technology now exists to do it, a couple of Japanese companies have made acoustical models of major concert halls. You could as you imply begin with two microphone stereo, and "fill in" the sound from the rest of the hall at the time of reproduction. (Something like that is already being done at a primitive level with surround releases that use synthesized reverberation. This I think can offer superior results insofar as the directionality of cardioid microphones makes it difficult to isolate the reverberant from the direct sound when making a recording. It's a case in which purist recording techniques are actually inferior.) Or as you also point out, you could begin with a multitrack recording and do a more complete reconstruction of the hall acoustics.
Ideally, I think, you'd want to use an array to accurately reconstruct the wavefront of the image coming from the front; surround sound reproduction is I think less demanding, in the case of music reproduction, anyway (movie and game effects are a different matter). As in the stereo case, the reproducing array could be fed with an array of microphones, or a synthesized sound field generated from a multitrack recording. One fellow made a clever proposal to use the directionality of the front array to generate reflections in the other five surfaces, obviating the need for surround speakers and perhaps allowing a more accurate reconstruction.
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- RE: what is your most shocking wikileakesque revelations about the audio industry in the last 3 years? - josh358 18:12:07 12/13/10 (0)
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