[Impromptu] impromptu v2.0 released

[Pasin, Michele]

No just the standard iMac audio card...

Michele Pasin

On 12 Sep 2009, at 01:14, "Andrew Sorensen" <andrew at moso.com.au> wrote:

> Are you using a FireWire or USB  audio devices?
>
> On 12/09/2009, at 4:48 AM, Michele Pasin <michele.pasin at kcl.ac.uk>
> wrote:
>
>> Hi all,
>>
>> did anybody have any strange impromptu behavior after the latest OSX
>> update?
>>
>> [http://www.flickr.com/photos/mikele/3907046949/sizes/l/]
>>
>> Basically, as soon as I launch the movie-capture function (see the
>> screenshot) I start getting a never ending list of 'audio dropout'
>> errors... as a result I have to stop the screencapture function and
>> can't do any screen-casting anymore.
>> I think it's caused by an OS update for I am actually using Impromptu
>> 1.3 on that machine (an iMac, Intel Core Duo), and  the error started
>> appearing only recently. I also tried using 1.5 and 2.0 ... same
>> 'audio dropout' problem.
>>
>> what could it be?
>>
>> Curiously instead, on my macBookPro laptop (same OS, Intel Core 2  
>> Duo)
>> everything seems to work fine....
>>
>> thanks,
>>
>> Michele
>>
>>
>>
>> On 7 Sep 2009, at 09:13, Andrew Sorensen wrote:
>>
>>> Impromptu version 2.0 is now available for download at:
>>> http://impromptu.moso.com.au/downloads.html
>>>
>>> Impromptu v2.0 is a major release with three significant
>>> architectural
>>> changes.
>>>
>>> 1) A new impromptu x86 compiler
>>> 2) Audio signal processing directly in Impromptu.
>>> 3) A new concurrent garbage collector
>>>
>>> The new impromptu x86 compiler uses LLVM for backend code generation
>>> and supports runtime compilation of scheme functions to x86 machine
>>> code.  In particular the compiler has been added to impromptu to
>>> support the efficient compilation of scheme code for data processing
>>> tasks such as image processing, audio signal processing and OpenGL.
>>> The compiler is exposed at runtime through the sys:compile call  
>>> which
>>> accepts a scheme closure and returns a foreign function which may be
>>> called freely from scheme.  (help sys:compile #t) will give you a
>>> bunch of examples.
>>>
>>> On-the-fly audio DSP programming is now supported directly within  
>>> the
>>> impromptu scheme environment by allowing x86 code (i.e. compiled
>>> scheme code) to be hot-swapped into the kernel of a custom code
>>> AudioUnit.  You may use one or more of these custom code audiounits
>>> anywhere in your audiounit chain - as both generators and or  
>>> effects.
>>> Code is hot-swapped into an AU kernel by passing a given scheme
>>> closure to the au:code:load function.  There is also a mechanism for
>>> sharing memory between the AU and the scheme runtime. (help
>>> au:code:load #t) will give you a bunch of examples.
>>>
>>> The primary motivation for the new GC is to provide greater
>>> performance with larger heap sizes.
>>>
>>> v2.0 also adds support for Snow Leopard but is no longer provided
>>> as a
>>> Universal Binary.  Intel only from v2.0 forward.
>>>
>>> A brief screen-cast demonstrating the new on-the-fly audio
>>> functionality can be found at: http://www.vimeo.com/6096554
>>>
>>> Cheers,
>>> Andrew.
>>> _______________________________________________
>>> Impromptu mailing list
>>> Impromptu at lists.moso.com.au
>>> http://lists.moso.com.au/mailman/listinfo/impromptu
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> ____________________________
>> Dr. Michele Pasin, Researcher
>> Centre for Computing in the Humanities
>> King's College, London
>> http://staff.cch.kcl.ac.uk/~mpasin/
>>
>>
>>
>>
>>
>>
>>
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