Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Dave Malham 
Good  grief - you printed the metal frame? I thought that was still very
expensive?

 Dave


On 5 May 2014 22:15, Hector Centeno  wrote:

> No, the capsules are not printed (it would be great if I could!). The white
> holder and metal frame where 3D printed.
>
> Best,
>
> Hector
> On May 5, 2014 2:00 PM, "Stefan Schreiber"  wrote:
>
> > Hector Centeno wrote:
> >
> >  Hello all,
> >>
> >> I've been experimenting with making a native B-Format mic using 3D
> printed
> >> parts. I've done some recordings with it and I was wondering if people
> >> here
> >> with ambisonic playback systems could give one of them a try. Any
> comments
> >> will be very appreciated.
> >>
> >> A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
> >> Link to binaural decode and link to B-Format file (in the description):
> >> https://soundcloud.com/hcenteno/wow-what-is-that-papa
> >>
> >> Change the level of the W channel to taste (the W capsule is more
> >> sensitive
> >> than the rest so I had to reduce it to what sounded good to me).
> >>
> >> Thanks and best wishes,
> >>
> >> Hector
> >>
> >>
> >
> > Really cool, and very creative!
> >
> > < Which > parts did you actually print? You can't print the capsules
> > itself, can you?
> >
> > It is probably not just me who would like to ask this question...
> >
> > Best regards,
> >
> > Stefan
> >
> > ___
> > Sursound mailing list
> > Sursound@music.vt.edu
> > https://mail.music.vt.edu/mailman/listinfo/sursound
> >
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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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Re: [Sursound] parallella board

2014-05-21 Thread Dave Malham 
As it has an SPI interface, it should be usable with multichannel DAC's.
 The main chip also has a lot of FPGA which could be tasked with providing
more SPI interfaces. A very interesting board indeed.

Dave


On 13 May 2014 15:51,  wrote:

> Indeed that is an interesting board. However, hidden in a comment trail on
> the blog they note that there was limited funding for the production run of
> the 64 processor board. This resulted in higher cost/unit and a very
> limited quantity being produced. The net of that is that all that were made
> are already committed, so none with be available for purchase.
>
> Michael
>
> - Original Message - Subject: [Sursound] parallella board
> From: "JQ Adams" 
> Date: 5/13/14 1:59 am
> To: "Surround Sound discussion group" 
>
> Hi all.
>
>  Does anyone have any experience or plans to perform audio-related
>  processing using one of these boards with the Adapteva 16-core
> coprocessor?
>
>  http://www.parallella.org
>
>  It's cheap and low power (RaspberryPi-esque) but seemingly quite capable
> of
>  significant workloads (especially the upcoming 64-core version).
>
>  I figured it may be useful for many channel decoding of B-format to
> speaker
>  feeds, or doing some heavy lifting in FIR calculations for
>  room-equalization, etc.
>
>  I have in mind echo cancelers and convolving out the room contribution for
>  VC applications. However I don't know enough about chip architecture to
>  know whether this would be a good choice over more conventional (SHARC)
>  DSPs. I see that this is only 32-bit float capable in hardware, whereas
>  math functions in the SHARC ar 40-bit precision. For proper scientific
>  computing, double floats (64-bit) are usually desired, but I'm uncertain
>  whether this applies to the audio domain.
>
>  Any thoughts?
>
>  Cheers,
>  JQ
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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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Re: [Sursound] parallella board

2014-05-21 Thread Bo-Erik Sandholm 
http://www.altera.com/literature/an/an487.pdf Design examples on how to doit...

-Original Message-
From: Sursound [mailto:sursound-boun...@music.vt.edu] On Behalf Of Dave Malham
Sent: den 21 maj 2014 10:28
To: Surround Sound discussion group
Subject: Re: [Sursound] parallella board

As it has an SPI interface, it should be usable with multichannel DAC's.
 The main chip also has a lot of FPGA which could be tasked with providing more 
SPI interfaces. A very interesting board indeed.

Dave


On 13 May 2014 15:51,  wrote:

> Indeed that is an interesting board. However, hidden in a comment 
> trail on the blog they note that there was limited funding for the 
> production run of the 64 processor board. This resulted in higher 
> cost/unit and a very limited quantity being produced. The net of that 
> is that all that were made are already committed, so none with be available 
> for purchase.
>
> Michael
>
> - Original Message - Subject: [Sursound] parallella 
> board
> From: "JQ Adams" 
> Date: 5/13/14 1:59 am
> To: "Surround Sound discussion group" 
>
> Hi all.
>
>  Does anyone have any experience or plans to perform audio-related  
> processing using one of these boards with the Adapteva 16-core 
> coprocessor?
>
>  http://www.parallella.org
>
>  It's cheap and low power (RaspberryPi-esque) but seemingly quite 
> capable of  significant workloads (especially the upcoming 64-core 
> version).
>
>  I figured it may be useful for many channel decoding of B-format to 
> speaker  feeds, or doing some heavy lifting in FIR calculations for  
> room-equalization, etc.
>
>  I have in mind echo cancelers and convolving out the room 
> contribution for  VC applications. However I don't know enough about 
> chip architecture to  know whether this would be a good choice over 
> more conventional (SHARC)  DSPs. I see that this is only 32-bit float 
> capable in hardware, whereas  math functions in the SHARC ar 40-bit 
> precision. For proper scientific  computing, double floats (64-bit) 
> are usually desired, but I'm uncertain  whether this applies to the audio 
> domain.
>
>  Any thoughts?
>
>  Cheers,
>  JQ

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Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Stefan Schreiber 

Dave Malham wrote:


Good  grief - you printed the metal frame? I thought that was still very
expensive?

Dave
 



It would be cheaper to print the capsules. 'Cos you would need less 
material than for the frame...   :-)


Stefan




On 5 May 2014 22:15, Hector Centeno  wrote:

 


No, the capsules are not printed (it would be great if I could!). The white
holder and metal frame where 3D printed.

Best,

Hector
On May 5, 2014 2:00 PM, "Stefan Schreiber"  wrote:

   


Hector Centeno wrote:

Hello all,
 


I've been experimenting with making a native B-Format mic using 3D
   


printed
   


parts. I've done some recordings with it and I was wondering if people
here
with ambisonic playback systems could give one of them a try. Any
   


comments
   


will be very appreciated.

A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
Link to binaural decode and link to B-Format file (in the description):
https://soundcloud.com/hcenteno/wow-what-is-that-papa

Change the level of the W channel to taste (the W capsule is more
sensitive
than the rest so I had to reduce it to what sounded good to me).

Thanks and best wishes,

Hector


   


Really cool, and very creative!

< Which > parts did you actually print? You can't print the capsules
itself, can you?

It is probably not just me who would like to ask this question...

Best regards,

Stefan

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Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Hector Centeno 
Hi Dave,

Yes, the metal frame was 3D printed. It costed about $28.

Best,

Hector
Dave Malham wrote:

 Good  grief - you printed the metal frame? I thought that was still very
> expensive?
>
> Dave
>
>

It would be cheaper to print the capsules. 'Cos you would need less
material than for the frame...   :-)

Stefan



> On 5 May 2014 22:15, Hector Centeno  wrote:
>
>
>
>> No, the capsules are not printed (it would be great if I could!). The
>> white
>> holder and metal frame where 3D printed.
>>
>> Best,
>>
>> Hector
>> On May 5, 2014 2:00 PM, "Stefan Schreiber"  wrote:
>>
>>
>>
>>> Hector Centeno wrote:
>>>
>>> Hello all,
>>>
>>>
>>>> I've been experimenting with making a native B-Format mic using 3D
>>>>
>>>>
>>> printed
>>
>>
>>> parts. I've done some recordings with it and I was wondering if people
>>>> here
>>>> with ambisonic playback systems could give one of them a try. Any
>>>>
>>>>
>>> comments
>>
>>
>>> will be very appreciated.
>>>>
>>>> A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
>>>> Link to binaural decode and link to B-Format file (in the description):
>>>> https://soundcloud.com/hcenteno/wow-what-is-that-papa
>>>>
>>>> Change the level of the W channel to taste (the W capsule is more
>>>> sensitive
>>>> than the rest so I had to reduce it to what sounded good to me).
>>>>
>>>> Thanks and best wishes,
>>>>
>>>> Hector
>>>>
>>>>
>>>>
>>>>
>>> Really cool, and very creative!
>>>
>>> < Which > parts did you actually print? You can't print the capsules
>>> itself, can you?
>>>
>>> It is probably not just me who would like to ask this question...
>>>
>>> Best regards,
>>>
>>> Stefan
>>>
>>> ___
>>> Sursound mailing list
>>> Sursound@music.vt.edu
>>> https://mail.music.vt.edu/mailman/listinfo/sursound
>>>
>>>
>>>
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>>
>>
>>
>
>
>
>
>

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Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Conor Mulvey 
Hector,

That's a great price for 3D printing in metal. What company did you use?

Thanks,
Conor


On Wed, May 21, 2014 at 2:16 PM, Hector Centeno  wrote:

> Hi Dave,
>
> Yes, the metal frame was 3D printed. It costed about $28.
>
> Best,
>
> Hector
> Dave Malham wrote:
>
>  Good  grief - you printed the metal frame? I thought that was still very
> > expensive?
> >
> > Dave
> >
> >
>
> It would be cheaper to print the capsules. 'Cos you would need less
> material than for the frame...   :-)
>
> Stefan
>
>
>
> > On 5 May 2014 22:15, Hector Centeno  wrote:
> >
> >
> >
> >> No, the capsules are not printed (it would be great if I could!). The
> >> white
> >> holder and metal frame where 3D printed.
> >>
> >> Best,
> >>
> >> Hector
> >> On May 5, 2014 2:00 PM, "Stefan Schreiber" 
> wrote:
> >>
> >>
> >>
> >>> Hector Centeno wrote:
> >>>
> >>> Hello all,
> >>>
> >>>
> >>>> I've been experimenting with making a native B-Format mic using 3D
> >>>>
> >>>>
> >>> printed
> >>
> >>
> >>> parts. I've done some recordings with it and I was wondering if people
> >>>> here
> >>>> with ambisonic playback systems could give one of them a try. Any
> >>>>
> >>>>
> >>> comments
> >>
> >>
> >>> will be very appreciated.
> >>>>
> >>>> A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
> >>>> Link to binaural decode and link to B-Format file (in the
> description):
> >>>> https://soundcloud.com/hcenteno/wow-what-is-that-papa
> >>>>
> >>>> Change the level of the W channel to taste (the W capsule is more
> >>>> sensitive
> >>>> than the rest so I had to reduce it to what sounded good to me).
> >>>>
> >>>> Thanks and best wishes,
> >>>>
> >>>> Hector
> >>>>
> >>>>
> >>>>
> >>>>
> >>> Really cool, and very creative!
> >>>
> >>> < Which > parts did you actually print? You can't print the capsules
> >>> itself, can you?
> >>>
> >>> It is probably not just me who would like to ask this question...
> >>>
> >>> Best regards,
> >>>
> >>> Stefan
> >>>
> >>> ___
> >>> Sursound mailing list
> >>> Sursound@music.vt.edu
> >>> https://mail.music.vt.edu/mailman/listinfo/sursound
> >>>
> >>>
> >>>
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> >> Sursound@music.vt.edu
> >> https://mail.music.vt.edu/mailman/listinfo/sursound
> >>
> >>
> >>
> >
> >
> >
> >
> >
>
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Re: [Sursound] WFS systems

2014-05-21 Thread Augustine Leudar 
I have on here in Ireland - a humble 32 channel one - though I often
put the speakers in many different configurations and it is without a
name. Also te University of Salford has a good one as do the guys who
make soundscape renderer (I think)

On 18/05/2014, Andres Cabrera  wrote:
> Hi,
>
> I'm wondering if anyone has compiled a list of research WFS systems. The TU
> Berlin and the Game of Life systems come immediately to mind, but before
> starting to dig, I wanted to know if someone has already done this list.
>
> Also of interest could be companies working on commercial WFS systems.
>
> Thanks!
> Andrés
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Re: [Sursound] WFS systems

2014-05-21 Thread Augustine Leudar 
P.S.  I think Disney world/land have one in the haunted house...

On 21/05/2014, Augustine Leudar  wrote:
> I have on here in Ireland - a humble 32 channel one - though I often
> put the speakers in many different configurations and it is without a
> name. Also te University of Salford has a good one as do the guys who
> make soundscape renderer (I think)
>
> On 18/05/2014, Andres Cabrera  wrote:
>> Hi,
>>
>> I'm wondering if anyone has compiled a list of research WFS systems. The
>> TU
>> Berlin and the Game of Life systems come immediately to mind, but before
>> starting to dig, I wanted to know if someone has already done this list.
>>
>> Also of interest could be companies working on commercial WFS systems.
>>
>> Thanks!
>> Andrés
>> -- next part --
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>
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>


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Re: [Sursound] WFS systems

2014-05-21 Thread Augustine Leudar 
oh and IRCAM - IRCAM have a really good one I hear (and one day hope
to actually hear)

On 21/05/2014, Augustine Leudar  wrote:
> P.S.  I think Disney world/land have one in the haunted house...
>
> On 21/05/2014, Augustine Leudar  wrote:
>> I have on here in Ireland - a humble 32 channel one - though I often
>> put the speakers in many different configurations and it is without a
>> name. Also te University of Salford has a good one as do the guys who
>> make soundscape renderer (I think)
>>
>> On 18/05/2014, Andres Cabrera  wrote:
>>> Hi,
>>>
>>> I'm wondering if anyone has compiled a list of research WFS systems. The
>>> TU
>>> Berlin and the Game of Life systems come immediately to mind, but before
>>> starting to dig, I wanted to know if someone has already done this list.
>>>
>>> Also of interest could be companies working on commercial WFS systems.
>>>
>>> Thanks!
>>> Andrés
>>> -- next part --
>>> An HTML attachment was scrubbed...
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>>> 
>>> ___
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>>>
>>
>>
>> --
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>>
>
>
> --
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Re: [Sursound] WFS systems

2014-05-21 Thread Marc Lavallée 
There's a WFS installation at U. of Sherbrooke GAUS research lab, 
with 96 speakers:
http://gaus.recherche.usherbrooke.ca/
http://gaus.recherche.usherbrooke.ca/wordpress/wp-content/uploads/2013/01/WFS-salle-940x340.jpg
--
Marc

Le Wed, 21 May 2014 20:21:26 -0300,
Augustine Leudar  a écrit :

> oh and IRCAM - IRCAM have a really good one I hear (and one day hope
> to actually hear)
> 
> On 21/05/2014, Augustine Leudar  wrote:
> > P.S.  I think Disney world/land have one in the haunted house...
> >
> > On 21/05/2014, Augustine Leudar  wrote:
> >> I have on here in Ireland - a humble 32 channel one - though I
> >> often put the speakers in many different configurations and it is
> >> without a name. Also te University of Salford has a good one as do
> >> the guys who make soundscape renderer (I think)
> >>
> >> On 18/05/2014, Andres Cabrera  wrote:
> >>> Hi,
> >>>
> >>> I'm wondering if anyone has compiled a list of research WFS
> >>> systems. The TU
> >>> Berlin and the Game of Life systems come immediately to mind, but
> >>> before starting to dig, I wanted to know if someone has already
> >>> done this list.
> >>>
> >>> Also of interest could be companies working on commercial WFS
> >>> systems.
> >>>
> >>> Thanks!
> >>> Andrés
> >>> -- next part --
> >>> An HTML attachment was scrubbed...
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> >>> 
> >>> ___
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> >>> Sursound@music.vt.edu
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> >>>
> >>
> >>
> >> --
> >> 07812675974
> >>
> >
> >
> > --
> > 07812675974
> >
> 
> 

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Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Hector Centeno 
Hi Conor,

It was www.shapeways.com You can make your uploaded models available to
others. If the mic proves to be useful I'll make the parts public so others
can order them directly.

Best,

Hector
On May 21, 2014 2:28 PM, "Conor Mulvey"  wrote:

> Hector,
>
> That's a great price for 3D printing in metal. What company did you use?
>
> Thanks,
> Conor
>
>
> On Wed, May 21, 2014 at 2:16 PM, Hector Centeno  wrote:
>
> > Hi Dave,
> >
> > Yes, the metal frame was 3D printed. It costed about $28.
> >
> > Best,
> >
> > Hector
> > Dave Malham wrote:
> >
> >  Good  grief - you printed the metal frame? I thought that was still very
> > > expensive?
> > >
> > > Dave
> > >
> > >
> >
> > It would be cheaper to print the capsules. 'Cos you would need less
> > material than for the frame...   :-)
> >
> > Stefan
> >
> >
> >
> > > On 5 May 2014 22:15, Hector Centeno  wrote:
> > >
> > >
> > >
> > >> No, the capsules are not printed (it would be great if I could!). The
> > >> white
> > >> holder and metal frame where 3D printed.
> > >>
> > >> Best,
> > >>
> > >> Hector
> > >> On May 5, 2014 2:00 PM, "Stefan Schreiber" 
> > wrote:
> > >>
> > >>
> > >>
> > >>> Hector Centeno wrote:
> > >>>
> > >>> Hello all,
> > >>>
> > >>>
> > >>>> I've been experimenting with making a native B-Format mic using 3D
> > >>>>
> > >>>>
> > >>> printed
> > >>
> > >>
> > >>> parts. I've done some recordings with it and I was wondering if
> people
> > >>>> here
> > >>>> with ambisonic playback systems could give one of them a try. Any
> > >>>>
> > >>>>
> > >>> comments
> > >>
> > >>
> > >>> will be very appreciated.
> > >>>>
> > >>>> A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
> > >>>> Link to binaural decode and link to B-Format file (in the
> > description):
> > >>>> https://soundcloud.com/hcenteno/wow-what-is-that-papa
> > >>>>
> > >>>> Change the level of the W channel to taste (the W capsule is more
> > >>>> sensitive
> > >>>> than the rest so I had to reduce it to what sounded good to me).
> > >>>>
> > >>>> Thanks and best wishes,
> > >>>>
> > >>>> Hector
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>> Really cool, and very creative!
> > >>>
> > >>> < Which > parts did you actually print? You can't print the capsules
> > >>> itself, can you?
> > >>>
> > >>> It is probably not just me who would like to ask this question...
> > >>>
> > >>> Best regards,
> > >>>
> > >>> Stefan
> > >>>
> > >>> ___
> > >>> Sursound mailing list
> > >>> Sursound@music.vt.edu
> > >>> https://mail.music.vt.edu/mailman/listinfo/sursound
> > >>>
> > >>>
> > >>>
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> > >>
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> > >> Sursound@music.vt.edu
> > >> https://mail.music.vt.edu/mailman/listinfo/sursound
> > >>
> > >>
> > >>
> > >
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> > >
> > >
> > >
> >
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>
>
>
> --
> VisiSonics Corporation
> 387 Technology Dr.
> College Park, MD 20742
> www.visisonics.com
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Re: [Sursound] B-Fromat microphone

2014-05-21 Thread Dave Malham 


 Last time I looked at something like that, they were talking hundreds

Dave


On 21 May 2014 19:16, Hector Centeno  wrote:

> Hi Dave,
>
> Yes, the metal frame was 3D printed. It costed about $28.
>
> Best,
>
> Hector
> Dave Malham wrote:
>
>  Good  grief - you printed the metal frame? I thought that was still very
> > expensive?
> >
> > Dave
> >
> >
>
> It would be cheaper to print the capsules. 'Cos you would need less
> material than for the frame...   :-)
>
> Stefan
>
>
>
> > On 5 May 2014 22:15, Hector Centeno  wrote:
> >
> >
> >
> >> No, the capsules are not printed (it would be great if I could!). The
> >> white
> >> holder and metal frame where 3D printed.
> >>
> >> Best,
> >>
> >> Hector
> >> On May 5, 2014 2:00 PM, "Stefan Schreiber" 
> wrote:
> >>
> >>
> >>
> >>> Hector Centeno wrote:
> >>>
> >>> Hello all,
> >>>
> >>>
> >>>> I've been experimenting with making a native B-Format mic using 3D
> >>>>
> >>>>
> >>> printed
> >>
> >>
> >>> parts. I've done some recordings with it and I was wondering if people
> >>>> here
> >>>> with ambisonic playback systems could give one of them a try. Any
> >>>>
> >>>>
> >>> comments
> >>
> >>
> >>> will be very appreciated.
> >>>>
> >>>> A photo of the mic: http://www.hcenteno.net/extras/b-format_mic.jpg
> >>>> Link to binaural decode and link to B-Format file (in the
> description):
> >>>> https://soundcloud.com/hcenteno/wow-what-is-that-papa
> >>>>
> >>>> Change the level of the W channel to taste (the W capsule is more
> >>>> sensitive
> >>>> than the rest so I had to reduce it to what sounded good to me).
> >>>>
> >>>> Thanks and best wishes,
> >>>>
> >>>> Hector
> >>>>
> >>>>
> >>>>
> >>>>
> >>> Really cool, and very creative!
> >>>
> >>> < Which > parts did you actually print? You can't print the capsules
> >>> itself, can you?
> >>>
> >>> It is probably not just me who would like to ask this question...
> >>>
> >>> Best regards,
> >>>
> >>> Stefan
> >>>
> >>> ___
> >>> Sursound mailing list
> >>> Sursound@music.vt.edu
> >>> https://mail.music.vt.edu/mailman/listinfo/sursound
> >>>
> >>>
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> >>
> >>
> >>
> >
> >
> >
> >
> >
>
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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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