[Sugar-devel] Outreachy - Going Beyond Equal Temperament in Music Blocks

[Walter Bender]

I think some of the confusion comes from some ambiguous terminology. Arg
blocks are blocks that "flow" horizontally. Flow args "flow" vertically. I
think we are talking about a flow block that accepts three arg blocks.

I am not sure we have any example of three argument blocks right now, but
we could add them (the underlying code is there.)

-walter

On Sun, Apr 2, 2017 at 5:16 AM, Sachithra Dangalla <
sachithradangalla at gmail.com> wrote:

> Hi,
>
> The number representation is clear and I think that is a good approach.
>
> Just to be clear, as you said,
>
>
>> *0 and 1 can could also represent a larger or smaller interval than
>> equaltemperament as long as -1<0<1<2<3<4<etc...*
>
>
> In the above, what does -1 mean? I'm assuming it's a condition to check if
> any number should be greater than -1. Is that so?
>
>
> Regarding the mockups:
>
> I think it is better to go with your designs. But I'm a bit confused about
> the 3-arg blocks. In the Github issue #485
> <https://github.com/walterbender/musicblocks/issues/485> [1], the comment
> suggesting 3-arg blocks
> <https://github.com/walterbender/musicblocks/issues/485#issuecomment-274295496>[2]
> discusses that dropping in multiple things has to be avoided. And that's
> why I used the arg-type blocks in my mockups.
>
> [image: Inline image 2]
>
>
>
> I believe the following is an arg block, can you tell me what a 3-arg
> block is?
>
> [image: Inline image 1]
>
> [1] - https://github.com/walterbender/musicblocks/issues/485
> [2] - https://github.com/walterbender/musicblocks/issues/485#issuecomment-
> 274295496
>
> *Sachithra Dangalla,*
> Undergraduate B.Sc.Eng.(Hons.)
> Department of Computer Science & Engineering,
> University of Moratuwa,
> Sri Lanka.
>
> <https://plus.google.com/u/0/+SachithraDangalla93>
> <https://lk.linkedin.com/in/sachithradangalla>
> <https://comexile.blogspot.com>
>
> On Mon, Mar 27, 2017 at 6:50 AM, Devin Ulibarri <devin at ulibarri.website>
> wrote:
>
>> On Sun, 2017-03-26 at 16:46 +0530, Sachithra Dangalla wrote:
>> > After mapping the frequencies, the next focus has to be on
>> > transformations such as adding half-steps, intervals and mode - as
>> > Walter said on a previous mail. But I still have a lot to figure out
>> > about them. Or will they be understood while actually implementing the
>> > project?
>> >
>> Walter and I are still talking it over, but my idea is to basically use
>> pitch number as a layer of abstraction to facilitate half-steps,
>> intervals, and modes.
>>
>> For example, the distance between 0 and 1 can represent the distance of
>> any two pitches (first is lower and second is higher).
>>
>> For equal temperament *that* distance is called a "half step" that is
>> defined by certain frequencies. A "half step" is also the name a type of
>> interval.
>>
>> 0 and 1 can could also represent a larger or smaller interval than equal
>> temperament as long as -1<0<1<2<3<4<etc...
>>
>> And modes are different geometries of various intervals.
>>
>> So we could have:
>>
>> 0 2 4 5 7 9 11 12
>>
>> ...which could represent an equal temperament (Major) scale--Dorian
>> mode. Or it could represent another collection of frequencies entirely.
>>
>> ---------Above pitch number layer of abstraction-------------
>>
>> Above pitch number layer of abstraction, we can map names to those
>> pitches...
>> 0 = Do, C
>> 1 = Do#, C#, Reb, Db
>> 2 = Re, D
>> etc.
>>
>> Does that make sense? What are your thoughts...
>> >
>> > I would really appreciate it if you can comment your ideas in the
>> > following sheet.
>> >
>> >
>> > [1] - Google Sheet
>> > - https://docs.google.com/spreadsheets/d/1Jkp1rpCVn6fIIg6xIYnD
>> hHebzFAcxogqtpMaJezBI0c/edit?usp=sharing
>>
>> Looks good so far.
>>
>>
>


-- 
Walter Bender
Sugar Labs
http://www.sugarlabs.org
<http://www.sugarlabs.org>
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