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[Csnd] Windows 32 float version?

Date2011-06-04 14:22
FromCharles Gran
Subject[Csnd] Windows 32 float version?
I haven't touched csound in a year and have learned there is no longer
a 32-bit float binary.  My live pieces from last Summer don't seem to
be working as well with the double binary.  Are pre-built 32 binaries
a thing of the past?

Just to display my ignorance.  I have some files that used to run at
sr=88200 live, but I can only get them going at 44100 now.  I'm not
set up right now to run the older version of csound (5.11?)  If I'm
running double-precision at 44100, will the quality be similar to
88200 at 32 (I have a feeling I'm sounding like an idiot)?

Charles


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Date2011-06-04 19:27
FromMichael Gogins
SubjectRe: [Csnd] Windows 32 float version?
The quality will be high in both cases, but not identical. 

There will be less noise from the audio system at 88200 and somewhat higher precision of computing complex sounds with 64 bit samples. In all likelihood, you will not be able to hear the differences at all. In any event, there is no direct tradeoff between these issues.

If you want to hear these kinds of things, it takes some work. Read the book _Mastering Audio_ by Bob Katz to understand the issues, then use an ABX soundfile comparator and listen to short (1 to 10 second) snippets of the same sound realized by both systems switched at random. You will say if you can hear a difference, and the program will say if you are actually hearing that difference. I highly recommend this for anyone who uses Csound to actually produce digital audio.

In _A Csound Tutorial_ by me, there is an Appendix C that covers some of this information, and has hints for achieving high precision audio with Csound.

In the next major release of Csound, we hope to implement rendering in parallel. For some kinds of music, on multi-core computers, this should offer some speedups.

We also are planning to experiment with compiling Csound to take advantage of high-performance graphical processing units for some computations.

Hope this helps,
Mike

On Sat, Jun 4, 2011 at 9:22 AM, Charles Gran <chasgran@gmail.com> wrote:
I haven't touched csound in a year and have learned there is no longer
a 32-bit float binary.  My live pieces from last Summer don't seem to
be working as well with the double binary.  Are pre-built 32 binaries
a thing of the past?

Just to display my ignorance.  I have some files that used to run at
sr=88200 live, but I can only get them going at 44100 now.  I'm not
set up right now to run the older version of csound (5.11?)  If I'm
running double-precision at 44100, will the quality be similar to
88200 at 32 (I have a feeling I'm sounding like an idiot)?

Charles


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Discussions of bugs and features can be posted here
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--
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com

Date2011-06-04 22:25
FromGareth Edwards
SubjectRe: [Csnd] Windows 32 float version?
Hi Michael
,
On 4 June 2011 19:27, Michael Gogins  wrote:
> use an ABX
> soundfile comparator and listen to short (1 to 10 second) snippets of the
> same sound realized by both systems switched at random. You will say if you
> can hear a difference, and the program will say if you are actually hearing
> that difference. I highly recommend this for anyone who uses Csound to
> actually produce digital audio.

Any recommendations on which comparator to use?

Cheers
Gareth


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Date2011-06-05 14:09
FromMichael Gogins
SubjectRe: [Csnd] Windows 32 float version?
Windows: http://ff123.net/abchr/abchr.html


I wouldn't be surprised if there are more.

Regards,
Mike

On Sat, Jun 4, 2011 at 5:25 PM, Gareth Edwards <gareth@edwardsfamily.org.uk> wrote:
Hi Michael
,
On 4 June 2011 19:27, Michael Gogins <michael.gogins@gmail.com> wrote:
> use an ABX
> soundfile comparator and listen to short (1 to 10 second) snippets of the
> same sound realized by both systems switched at random. You will say if you
> can hear a difference, and the program will say if you are actually hearing
> that difference. I highly recommend this for anyone who uses Csound to
> actually produce digital audio.

Any recommendations on which comparator to use?

Cheers
Gareth


Send bugs reports to the Sourceforge bug tracker
           https://sourceforge.net/tracker/?group_id=81968&atid=564599
Discussions of bugs and features can be posted here
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--
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com

Date2011-06-05 14:14
FromAlex Weiss
SubjectRe: [Csnd] Windows 32 float version?
For Mac: http://emptymusic.com/software/ABXer.html

On Sun, Jun 5, 2011 at 3:09 PM, Michael Gogins <michael.gogins@gmail.com> wrote:
Windows: http://ff123.net/abchr/abchr.html


I wouldn't be surprised if there are more.

Regards,
Mike


On Sat, Jun 4, 2011 at 5:25 PM, Gareth Edwards <gareth@edwardsfamily.org.uk> wrote:
Hi Michael
,
On 4 June 2011 19:27, Michael Gogins <michael.gogins@gmail.com> wrote:
> use an ABX
> soundfile comparator and listen to short (1 to 10 second) snippets of the
> same sound realized by both systems switched at random. You will say if you
> can hear a difference, and the program will say if you are actually hearing
> that difference. I highly recommend this for anyone who uses Csound to
> actually produce digital audio.

Any recommendations on which comparator to use?

Cheers
Gareth


Send bugs reports to the Sourceforge bug tracker
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Discussions of bugs and features can be posted here
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--
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com


Date2011-06-05 16:07
FromGareth Edwards
SubjectRe: [Csnd] Windows 32 float version?
Thank you, Michael and Alex.

On 5 June 2011 14:14, Alex Weiss  wrote:
> For Mac: http://emptymusic.com/software/ABXer.html
>
> On Sun, Jun 5, 2011 at 3:09 PM, Michael Gogins 
> wrote:
>>
>> Windows: http://ff123.net/abchr/abchr.html
>>
>> Linux: http://linux.softpedia.com/progDownload/ABX-Comparator-Download-13430.html
>> I wouldn't be surprised if there are more.
>> Regards,
>> Mike
>>
>> On Sat, Jun 4, 2011 at 5:25 PM, Gareth Edwards
>>  wrote:
>>>
>>> Hi Michael
>>> ,
>>> On 4 June 2011 19:27, Michael Gogins  wrote:
>>> > use an ABX
>>> > soundfile comparator and listen to short (1 to 10 second) snippets of
>>> > the
>>> > same sound realized by both systems switched at random. You will say if
>>> > you
>>> > can hear a difference, and the program will say if you are actually
>>> > hearing
>>> > that difference. I highly recommend this for anyone who uses Csound to
>>> > actually produce digital audio.
>>>
>>> Any recommendations on which comparator to use?
>>>
>>> Cheers
>>> Gareth
>>>
>>>
>>> Send bugs reports to the Sourceforge bug tracker
>>>            https://sourceforge.net/tracker/?group_id=81968&atid=564599
>>> Discussions of bugs and features can be posted here
>>> To unsubscribe, send email sympa@lists.bath.ac.uk with body "unsubscribe
>>> csound"
>>>
>>
>>
>>
>> --
>> Michael Gogins
>> Irreducible Productions
>> http://www.michael-gogins.com
>> Michael dot Gogins at gmail dot com
>
>


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