ALso, there's the fundamental frequency I select in the Score file 
that has to be considered. A 25-Hz or 30-Hz will alias differently
than a 6.3-kHz wave.

I'll just filter and shape it all to heck til I get my Sawtooth shaped
the way I like it. Add and LFO, delay, and some other effects and the 
fun really starts. Using just what I have here so far would be way
too bland.


-Partev


============================================================================


--- Victor.Lazzarini@nuim.ie wrote:

From: Victor Lazzarini 
To: csound@lists.bath.ac.uk
Subject: [Csnd] Re: Re: Re: Re: Re: What's the highest quality sawtooth in Csound?
Date: Sun, 03 Oct 2010 09:30:31 +0100

vco2 is the easiest way of doing this.
On 3 Oct 2010, at 08:49, Andres Cabrera wrote:

> Hi,
>
> Not really, because it's already aliased when it is created. Band
> limited oscillators do sound a little better than table based
> oscillators, but if the table is large and there is interpolation,
> it's harder to tell the difference.
>
> Cheers,
> Andrés
>
> On Sun, Oct 3, 2010 at 8:28 AM, Greg Schroeder  
>  wrote:
>> Couldn't one just increase the size of the table and or filter out  
>> the
>> aliasing frequencies?
>> Just sayin . . .
>> Greg
>>
>> On Sun, Oct 3, 2010 at 5:27 AM, Michael Mossey > > wrote:
>>>
>>>
>>> On 10/2/2010 4:32 PM, Partev Barr Sarkissian wrote:
>>>>
>>>> I have a Bi-Polar Pure Tone Sawtooth Wave:
>>>>
>>>> In my Score file---
>>>>
>>>> table  beats  size   GEN  harmonics/ amplitudes
>>>> f#       0    1024    7     1    1024    -1    ; 3-Sawtooth Wave
>>>>
>>>>
>>>
>>> Doesn't this cause aliasing? My understanding is that your  
>>> straight-line
>>> sawtooth contains harmonics that are potentially above the Nyquist  
>>> depending
>>> on the frequency of the sawtooth playback. Am I wrong?
>>>
>>>
>>>
>>>
>>> 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"
>>>
>>>
>>
>>
>> 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"
>>
>>
>
>
>
> -- 
>
>
> Andrés
>
>
> 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"
>



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_____________________________________________________________
Netscape.  Just the Net You Need.
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with ftgenonce, you could dynamically change the number of partials
used for each of a given number of frequency bands, and re-generate
the wavetable as required, but only if required, during performance.

Regards,
Mike

On Mon, Oct 4, 2010 at 11:18 AM, Aaron Krister Johnson
 wrote:
> Hi Partev,
>
> It doesn't quite work to filter an already aliased signal. Hence the need
> for a band-limited oscillator.
>
> The alias/foldover of the signal happens BEFORE the filter, so the artifact
> frequencies will be there before it enters the filter chain. Once those
> freqs are present, there is little to be done, including filtering. So,
> again, the best thing to do is to not create a dirty signal to begin with.
>
> One should either:
>
> 1) implement a rich waveform as a sum of sines that doesn't go above
> Nyquist.
> or
> 2) don't worry about the details and just use vco2. This was mentioned I
> think by Victor L. and others already.
>
> I prefer the latter, for ease :)
>
> Why is there GEN7, etc, then? Well, I suppose it's still useful for LFO
> modulation and enveloping....
>
> AKJ
>
> On Sun, Oct 3, 2010 at 5:56 PM, Partev Barr Sarkissian
>  wrote:
>>
>> ALso, there's the fundamental frequency I select in the Score file
>> that has to be considered. A 25-Hz or 30-Hz will alias differently
>> than a 6.3-kHz wave.
>>
>> I'll just filter and shape it all to heck til I get my Sawtooth shaped
>> the way I like it. Add and LFO, delay, and some other effects and the
>> fun really starts. Using just what I have here so far would be way
>> too bland.
>>
>>
>> -Partev
>>
>>
>>
>> ============================================================================
>>
>>
>> --- Victor.Lazzarini@nuim.ie wrote:
>>
>> From: Victor Lazzarini 
>> To: csound@lists.bath.ac.uk
>> Subject: [Csnd] Re: Re: Re: Re: Re: What's the highest quality sawtooth in
>> Csound?
>> Date: Sun, 03 Oct 2010 09:30:31 +0100
>>
>> vco2 is the easiest way of doing this.
>> On 3 Oct 2010, at 08:49, Andres Cabrera wrote:
>>
>> > Hi,
>> >
>> > Not really, because it's already aliased when it is created. Band
>> > limited oscillators do sound a little better than table based
>> > oscillators, but if the table is large and there is interpolation,
>> > it's harder to tell the difference.
>> >
>> > Cheers,
>> > Andrés
>> >
>> > On Sun, Oct 3, 2010 at 8:28 AM, Greg Schroeder
>> >  wrote:
>> >> Couldn't one just increase the size of the table and or filter out
>> >> the
>> >> aliasing frequencies?
>> >> Just sayin . . .
>> >> Greg
>> >>
>> >> On Sun, Oct 3, 2010 at 5:27 AM, Michael Mossey > >> > wrote:
>> >>>
>> >>>
>> >>> On 10/2/2010 4:32 PM, Partev Barr Sarkissian wrote:
>> >>>>
>> >>>> I have a Bi-Polar Pure Tone Sawtooth Wave:
>> >>>>
>> >>>> In my Score file---
>> >>>>
>> >>>> table  beats  size   GEN  harmonics/ amplitudes
>> >>>> f#       0    1024    7     1    1024    -1    ; 3-Sawtooth Wave
>> >>>>
>> >>>>
>> >>>
>> >>> Doesn't this cause aliasing? My understanding is that your
>> >>> straight-line
>> >>> sawtooth contains harmonics that are potentially above the Nyquist
>> >>> depending
>> >>> on the frequency of the sawtooth playback. Am I wrong?
>> >>>
>> >>>
>> >>>
>> >>>
>> >>> 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"
>> >>>
>> >>>
>> >>
>> >>
>> >> 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"
>> >>
>> >>
>> >
>> >
>> >
>> > --
>> >
>> >
>> > Andrés
>> >
>> >
>> > 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"
>> >
>>
>>
>>
>> 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"
>>
>>
>>
>>
>>
>> _____________________________________________________________
>> Netscape.  Just the Net You Need.
>> 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"
>>
>
>
>
> --
> Aaron Krister Johnson
> http://www.akjmusic.com
> http://www.untwelve.org
>
>



-- 
Michael Gogins
Irreducible Productions
http://www.michael-gogins.com
Michael dot Gogins at gmail dot com


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I think so...

MKG from cell phone

On Oct 4, 2010 3:27 PM, "Aaron Krister Johnson" <aaron@akjmusic.com> wrote:

This is true, but for 99% of applications, wouldn't vco2 suffice? :)

AKJ

On Mon, Oct 4, 2010 at 12:09 PM, Michael Gogins <michael.gogins@gmail.com> wrote:
>
> with ftgenon...