Should be fairly easy to adapt the output of the headtracker to produce
midi or OSC messages to control the processor. Go to it!
Dave
On 20 January 2014 02:30, Stefan Schreiber <st...@mail.telepac.pt> wrote:
> Bo-Erik Sandholm wrote:
>
> Here I am again, pushing for someone to do something for us ambisonic
>> users :-)
>>
>> I have been inspired by Hectors ambiexplorer app that was not
>> compatible with my old android phone.
>> https://play.google.com/store/apps/details?id=net.hcenteno.
>> ambiexplorer&hl=en
>>
>> The goal is to listen to a first order .amb file using head tracking.
>>
>> Can it be simply done with windows or linux ?
>> I think the components are almost here,
>>
>> DIY Headtracker for a cost of around 30 us $ controlling the b-proc
>> VST followed by a VST for FOA B-format to Binaural output could be one
>> solution.
>>
>> DIY head tracker
>> ww.rcgroups.com/forums/showthread.php?t=1677559
>> http://www.rcgroups.com/forums/showthread.php?t=1677559&page=6
>> - Quick start
>> Code and GUI can be found at google code
>> http://code.google.com/p/open-headtracker/
>> It took 4 weeks to get the hardware from china, and around 2 hours for
>> me as a complete aurdino rookie to connect the sensor to the Aurdino
>> nano and load the headtracker software.
>> It streams outputs strings like this 33.12,53.24,56,34 with the 3
>> xyz sensor values over the usb port showing up as a serial port on
>> windows.
>>
>> I remembered I had seen this:
>> http://www.york.ac.uk/inst/mustech/3d_audio/vst/bproc_help.html
>> B-Proc allows you to rotate, tilt and tumble a complete first order
>> B-Format soundfield. The order that these operations occur in is
>> important, since it affects the final orientation of the soundfield,
>> as all operations are with respect to the central listening position
>>
>> B-Format to Binaural
>> Any B-format to Binaural output or this faking it:
>> http://vvaudio.com/downloads
>> VVmicVST as output according to this description
>>
>>
>>> For something easier which works well, try back to back cardioids
>>> - pointing them slightly forward
>>> - going slightly hyper.
>>>
>>> I like this very simple decode.
>>>
>>> Used to use this a lot on Soundfield recordings when you couldn't do nowt
>>> but listen straight from the headphone output. Like Ricardo says, works
>>> well - with head tracking I'm pretty certain it would be fantastic -
>>> dw
>>>
>>>
>> I think dw wrote the above
>>
>> OR http://www.tech.dmu.ac.uk/~dylan/z/dylan/teach/
>> Multitrack spatial production:
>> Ambisonic / Multichannel / Binaural
>>
>> Or any other Ambisonic to Binaural VST.
>>
>> At the moment I belive the only missing glue is to be able to use the
>> serial input stream to control B-Proc. If I am to do it I know it will
>> take a long time :-)
>>
>> If the complete solution is running on windows, linux or android. I do
>> not care, I know Hector is looking in to a solution for the current
>> ambiexplorer android app so you don't need to tape the phone to your
>> head.
>>
>> Any pointers to do this with other software than my take on this is
>> welcome.
>>
>> Best Regards
>> Bo-Erik Sandholm
>> Stockholm Sweden
>>
>>
>>
>>
> Hector and Bo-Erik, I can only say: Bravo!
>
> This is a significant development, and some "reference hardware kit" for
> Ambisonics reproduction via (HT) headphones seems to be very close.
>
> Contrary to some important American audio gurus you didn't need any
> Kickstarter funding/ressources to realize your project... O:-)
>
> If the complete solution is running on windows, linux or android. I do
>> not care, I know Hector is looking in to a solution for the current
>> ambiexplorer android app so you don't need to tape the phone to your
>> head.
>>
>>
> OK: I'd say the "phone taped to your head" was a beautiful albeit
> desperate idea. ;-)
>
>
> DIY Headtracker for a cost of around 30 us $ controlling the b-proc
>> VST followed by a VST for FOA B-format to Binaural output could be one
>> solution.
>>
>>
> For a real-world application (next stage?), you might have to think how to
> connect a headtracker or headtracker-module to your mobile phone and other
> devices. (Interface question)
>
> You can keep the Arduino hardware base, but you might use some additional
> Bluetooth module to provide the (necessary?) wireless link.
>
> Don't forget to include some battery on the small tracker board, and you
> already have a solution which would work for every headphone on the market.
> (Excluding the fact that different operating systems need different
> software, unless a general solution - which could be based on JavaScript or
> Java - will be found. I am not sure if this is possible in this specific
> case, but probably yes.)
>
>
> Best,
>
> Stefan
>
> P.S.: For me and if the price is ok :-) , I would buy such a "audio
> headtracker-module". Cos I would not have to wait some 4 weeks for some
> ordered hardware components from China...
>
>
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--
As of 1st October 2012, I have retired from the University.
These are my own views and may or may not be shared by the University
Dave Malham
Honorary Fellow, Department of Music
The University of York
York YO10 5DD
UK
'Ambisonics - Component Imaging for Audio'
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