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Binaural recordings |
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Adytiger
New Member Joined: 04 Feb 2013 Location: North West Status: Offline Points: 38 |
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Thanks all for your responses. I take all that you say but it doesn’t explain why a binaural recordingnplayed through the same preamp and headphones can give a more realistic spatial image (in front of AND behind) the head than conventional stereo recordings.
Surely it is still a stereo L/R signal being sent to each earpiece?
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Ash
Senior Member Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
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It is due to microphone positioning. The two mics are placed on a dummy head where the left and right ears are. The delay times between them provides the perception of 3D spatial position.
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Adytiger
New Member Joined: 04 Feb 2013 Location: North West Status: Offline Points: 38 |
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Hi Ash,
Yes I understand that but is it not then possible to “tweak” or modify a conventional stereo signal to mimic what a dummy head recording “hears” and send this modified signal to the headphones? So you could take the original stereo master tape recording , “shape” it using some special software and then re-record as an approximated binaural recording. |
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Fatmangolf
Moderator Group Joined: 23 Dec 2009 Location: Middlesbrough Status: Offline Points: 8998 |
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In theory yes but the problem is most stereo reconrdings are made up of a set of separately recorded tracks mixed together. They haven't been captured with one stereo microphone or a spaced pair as Ash wrote above, in fact many are a set of difefrent tracks of close miked instruments which may just be mono tracks panned across from left to right. That works on speakers because of the cross-mix in the room but they they have a fixed position when heard on headphones and lack directional cues. Imagine playing a traditional stero recording through speakers and caaturing it with binaural microphones. It could be simulated with software but really it would a room model with two speakers and a stereo binaural microphone, ultimately it would still be panned stereo source signal i.e. a mixed album played back not a binaural recording. There isn't a general solution I know of to transform a panned studio recording into a binaural recording. However, there are blend controls and contour filters on some headphone amps designed to create a more natural and interesting mix for headphone listening. I hope that helps.
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Jon
Open mind and ears whilst owning GSP Genera, Accession M, Accession MC, Elevator EXP, Solo ULDE, Proprius amps, Cusat50 cables, Lautus digital cable, Spatia cables and links, and a Majestic DAC. |
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Ash
Senior Member Joined: 18 Mar 2013 Location: Dorset Status: Offline Points: 4334 |
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Two things to look at:
MySphere 3.1 Smyth Realiser A16 I have MS 3.1. The drivers are attached to completely open frames; no enclosures at all. The ear-to-driver distance and angle can be adjusted and optimized. I don't have the A16 but it uses DSP, headtracking and head related transfer function stuff to spatialize headphones to imitate speakers at a distance and at various positions around a virtual room. Complex and expensive stuff.
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