hello,

is there an opcode which does the reverse of cpsmidinn(x)?  which is
to say, converts a cps value in Hz to a midi note-number?

if not, shouldn't there be one?  i know that i'd find it very useful...

thanks!
--  ben

http://www.csounds.com/udo/displayOpcode.php?opcode_id=123

thanks rory  - i've actually already got an udo of my own (though
yours is nicer).

still, shouldn't we have an opcode for this?  most other pitch
conversion opcodes come in pairs, i.e., cpsoct <-> octcps.  i am not
sure why midinncps is missing.

cheers,
--  ben


On Mon, Mar 4, 2013 at 12:46 PM, Oeyvind Brandtsegg
 wrote:
>
> ... looking at thje UDO code, I started to wonder what is the role of icent,
> isn't the output simply equal to in1?
> (obviously, I must be missing something, but curious)
>
> in1 = 12 * (log(ifq/220)/log(2)) + 57 ;'real' conversion
> in2 = floor(in1) ;next lower midi note
> icent = (in1 - in2) * 100 ;cent difference
> xout in2 + icent/100
>
> best
> Oeyvind
>
>
> 2013/3/4 Rory Walsh 
>>
>> http://www.csounds.com/udo/displayOpcode.php?opcode_id=123
>>
>>
>> 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"
>>
>
>
>
> --
>
> Oeyvind Brandtsegg
> Professor of Music Technology
> NTNU
> 7491 Trondheim
> Norway
> Cell: +47 92 203 205
>
> http://flyndresang.no/
> http://www.partikkelaudio.com/
> http://soundcloud.com/brandtsegg
> http://soundcloud.com/t-emp

It wouldn't take much to put one in. Regarding Oeyvinds question, I've
never read this code. it's just one of those UDOs I use from time to
time.

On 4 March 2013 17:23, Ben Hackbarth  wrote:
> thanks rory  - i've actually already got an udo of my own (though
> yours is nicer).
>
> still, shouldn't we have an opcode for this?  most other pitch
> conversion opcodes come in pairs, i.e., cpsoct <-> octcps.  i am not
> sure why midinncps is missing.
>
> cheers,
> --  ben
>
>
> On Mon, Mar 4, 2013 at 12:46 PM, Oeyvind Brandtsegg
>  wrote:
>>
>> ... looking at thje UDO code, I started to wonder what is the role of icent,
>> isn't the output simply equal to in1?
>> (obviously, I must be missing something, but curious)
>>
>> in1 = 12 * (log(ifq/220)/log(2)) + 57 ;'real' conversion
>> in2 = floor(in1) ;next lower midi note
>> icent = (in1 - in2) * 100 ;cent difference
>> xout in2 + icent/100
>>
>> best
>> Oeyvind
>>
>>
>> 2013/3/4 Rory Walsh 
>>>
>>> http://www.csounds.com/udo/displayOpcode.php?opcode_id=123
>>>
>>>
>>> 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"
>>>
>>
>>
>>
>> --
>>
>> Oeyvind Brandtsegg
>> Professor of Music Technology
>> NTNU
>> 7491 Trondheim
>> Norway
>> Cell: +47 92 203 205
>>
>> http://flyndresang.no/
>> http://www.partikkelaudio.com/
>> http://soundcloud.com/brandtsegg
>> http://soundcloud.com/t-emp
>
>
> 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"
>

hi oeyvind -

you are completely right. not missing anything, but i made a superfluous 
step. i will rewrite this (would be better to have the rounded output as 
option, i think).

thanks for the correction and best regards -

	joachim


Am 04.03.2013 12:46, schrieb Oeyvind Brandtsegg:
>
> ... looking at thje UDO code, I started to wonder what is the role of
> icent, isn't the output simply equal to in1?
> (obviously, I must be missing something, but curious)
>
> in1 = 12 * (log(ifq/220)/log(2)) + 57 ;'real' conversion
> in2 = floor(in1) ;next lower midi note
> icent = (in1 - in2) * 100 ;cent difference
> xout in2 + icent/100
>
> best
> Oeyvind
>
>
> 2013/3/4 Rory Walsh >
>
>     http://www.csounds.com/udo/displayOpcode.php?opcode_id=123
>
>
>     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"
>
>
>
>
> --
>
> Oeyvind Brandtsegg
> Professor of Music Technology
> NTNU
> 7491 Trondheim
> Norway
> Cell: +47 92 203 205
>
> http://flyndresang.no/
> http://www.partikkelaudio.com/
> http://soundcloud.com/brandtsegg
> http://soundcloud.com/t-emp