Standard aliexpress Bluetooth module v2.0+edr have a data rate of 2.1 Mbit/s It is not so bad if you can get the sensors UART to push data near that speed.
- Bo-Erik On 1 Feb 2016 20:33, "David McGriffy" <da...@mcgriffy.com> wrote: > Right, 10DOF is with altitude. I'm building a drone controller out of piece > parts as a demonstration. > > Yes, there are certainly ways to achieve low latency convolution, but all > at the expense of CPU, which is already at a premium when running on > phones. > > I first heard the 20ms figure from some folks working in the VR biz. > Admittedly, they are more camera and content producers and not headset > makers, so perhaps this is just a dream goal of theirs. It does make some > sense to me as that's 50Hz, or the same as some TV refresh rates. Being one > frame off there can certainly be noticeable, especially with speech vs > moving lips. > > It does seem quite reasonable to me that an audio only app would not be as > critical. And, of course, the video and audio frame rates don't really > match anyway, or we'd be getting 882 or 960 sample blocks instead of 128 or > 512. > > I got a GearVR recently and it does work better than Google Cardboard. Much > of this is just comfort, I think, but I understand that it has its own > gyros, mostly because they are faster. 'Heresay' is that the Oculus Rift > samples at least 1000Hz. I have actually written an audio rate rotate that > could handle this, but it does seem like overkill. At normal head turning > rates, I find interpolating the rotation within each block to be enough. > > Any modern gyro and processor will run fast enough. My little 8-bit > controllers run their complete flight control loop in under 2ms. The limit > on update rate, and latency for that matter, will be the wireless link. > Wifi will be fastest but highest power. Bluetooth lower power but lower > bandwidth and still wireless. Wired would not only be very fast but could > provide power. > > If you are thinking wireless headphones, remember the latency that that > introduces. I find my everyday bluetooth headset, built for music, is > useless for VR because of latency. And if you headphones are going to be > wired, then running that extra USB might not be too bad. > > David McGriffy > > > On Mon, Feb 1, 2016 at 12:49 PM, Bo-Erik Sandholm <bosses...@gmail.com> > wrote: > > > Apperently there exists a head tracking specialized version of the bno055 > > called bno070 - but I cannot find a place to buy this. > > you can get up to 250 samples / second from that version. > > > > Matthias did not complain about the update rate with the DIY headtracker > > http://www.rcgroups.com/forums/showthread.php?t=1677559 > > > > > > > http://electronicspurchasingstrategies.com/2014/03/06/hillcrest-bosch-sensortec-collaborate-sensor-hub-solution/ > > > > http://docsfiles.com/pdf_bno070.html > > > > > > > http://ae-bst.resource.bosch.com/media/_tech/media/product_flyer/Mobile-Hillcrest-Labs-Sensor-Hub-Product-Brief-BNO0701.pdf > > > > > > > https://www.eiseverywhere.com/file_uploads/5c881a2f6eaaa90ed3f3d30fb20852db_Newsflash_BNO077.pdf > > > > > > maybe it is better to not think about that and try and use what I have ? > > > > It is easy to find videos about using the bno055 in different projects > but > > i do not want videos... have not found links to the software used... > > > > > > > > Better luck when google github bno055 :-) > > > > > > > https://www.reddit.com/r/virtualreality/comments/3faq11/why_we_need_to_move_to_ambisonic_sound_in_the/ > > > > http://vriscoming.com/daydream-vr/ > > > > Bo-Erik > > > > 2016-02-01 18:56 GMT+01:00 Marc Lavallee <m...@hacklava.net>: > > > > > On Mon, 01 Feb 2016 17:46:47 +0000 > > > Stefan Schreiber <st...@mail.telepac.pt> wrote: > > > > What is a 10 DOF motion sensor??? (Didn't you mean 9DOF?) > > > > > > It's 9DOF + barometric pressure, so 9DOF is enough. For more info: > > > > > > http://playground.arduino.cc/Main/WhatIsDegreesOfFreedom6DOF9DOF10DOF11DOF > > > > > > -- > > > Marc > > > _______________________________________________ > > > Sursound mailing list > > > Sursound@music.vt.edu > > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > here, > > > edit account or options, view archives and so on. > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > https://mail.music.vt.edu/mailman/private/sursound/attachments/20160201/252ce84f/attachment.html > > > > > _______________________________________________ > > Sursound mailing list > > Sursound@music.vt.edu > > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > > edit account or options, view archives and so on. > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20160201/b49200e1/attachment.html > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -------------- next part -------------- An HTML attachment was scrubbed... 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