Re: [Sursound] parallella board

[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] parallella board

[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

[mgraves]

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] parallella board

[Marc Lavallée]

That's an interesting board.

On one of the expansion port there's one SPDIF link. And it looks like
the other ports are interconnections to other boards for building a
larger parallel computer. So I guess that one board would be required
per 8 channels audio link, and that linking boards together would allow
synchronizing as many SPDIF links. But I don't know if the parallel
computing capability of interconnected boards would be useful, and how
to program them...

--
Marc

Tue, 13 May 2014 08:59:36 +0200,
JQ Adams  a écrit :

> 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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[Sursound] parallella board

[JQ Adams]

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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