Nothing is perfect. The question is do RACE and BACCH provide higher fidelity than stereo sound reproduction, almost all the time, of 2.0 recordings. I believe the answer is yes for all those who do not regard stereo as an early artform, like black and white photography.
RACE, at least, does not use personal ear responses to create XTC programs which I do believe is neither necessary nor practical. At least with RACE, the source material does not need to have been recorded with a binaural dummy head microphone. The proof of this is the large number of barrier users who have listened to their entire collections Ambiophonically without difficulty. RACE is the same. If you do make a recording using an Ambiophone, the results can be really extraordinary for precise localization, clarity, stage width, and depth. But for ideal space recreation you really need a rear speaker pair driven from a rear XTC media pair or convolved ambience driving surround speakers. The psychoacoustic localization rule for a realistic recording/reproduction chain is that there should be one and only one head shadow in the system and one pinna pair and that this pinna set must be the listener's. Ambiophonics adheres to this rule. The mid frequency head shadow (ITD, ILD stuff) need not be a particular listener's since we rotate, nod, and lean our heads and sounds go around, under, over, etc. so this is not as personal as the pinna. So a recording chain using a baffled head shaped microphone without pinna and played back using close frontal speakers that thus don't generate another head shadow works quite well. Many other mic arrays are close enough to this model, have no pinnna and sound great. The pinna are happy if the speakers are relatively frontal since now the important center sound is correct. (For side sounds the earcanals aredirectly exposed and the pinna are less important. But you can read how to correct even for this elsewhere.) In any case, I claim that if all parts of the Ambiophonic methodology are employed, that a very high level of psychoaoustic verisimilitude can be achieved for a few listeners in a home setting at reasonable cost. Also I claim that basic Ambio can easily outperform the stereo triangle using just the same two speakers and the same recording. Using a barrier can prove that in seconds if you move the speakers closer when you do this. Ralph Glasgal www.ambiophonics.org ________________________________ From: Johan Haspeslagh <[email protected]> To: Surround Sound discussion group <[email protected]> Sent: Sat, March 12, 2011 3:25:08 PM Subject: Re: [Sursound] Anyone seen/heard about this? Also this system is flawed. The premise is that the real personal ear response is used to create XTC filters. The source material needs to be binaural. For all other source types the space recreation is as unreal as in a normal stereo loudspeaker setup. At the recording end it is improbable (and impractiacal) to use your personal binaural head for recording. So the recording-playback chain is as imperfect as any other. Johan Op vrijdag 11 maart 2011 10:00:29 schreef John Leonard: > Posted on another list. > > http://www.princeton.edu/3D3A/Publications/Pure%20Stereo.pdf > > Regards, > > John > _______________________________________________ > Sursound mailing list > [email protected] > https://mail.music.vt.edu/mailman/listinfo/sursound _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110313/6b4cebdb/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
