[squeakland] Playing musical notes

[karl ramberg]

On Mon, Jul 11, 2011 at 9:38 PM, Bert Freudenberg <bert at freudenbergs.de>wrote:

>
> On 11.07.2011, at 20:38, karl ramberg wrote:
>
>
>
> On Mon, Jul 11, 2011 at 6:04 PM, Steve Thomas <sthomas1 at gosargon.com>wrote:
>
>> Is there a way to play "instruments" other than tones, similar to
>> http://www.squeakland.org/showcase/project.jsp?id=7826?
>>
>> Ie: How can I specify an instrument?  I can load midi files, but would
>> like to be able to do something similar to Scratch where I can specify the
>> instrument. and then have a script "Play the notes"
>>
>
> It's all there under the hood waiting for someone to do the Etoys
> interface...
> Music gets quite technical fast and it's a big job getting the tools right.
>
> Here is a howto for the daring:
>
> Try the do it (that is paste this text into Etoys select it and press ctrl
> and d.)
>
> | n score | n _ 3.
> score _ (MIDIScore new tracks: ((1 to: n) collect: [:i | Array new]);
>  trackInfo: ((1 to: n) collect: [:i | 'Instrument' , i printString]);
> tempoMap: nil; ticksPerQuarterNote: 96).
>  ScorePlayerMorph openOn: score title: 'empty score'
>
> You can select instruments, click where it says 'flute1', and a menu pops
> up.
> Click PianoRoll and you get a piano roll :-)
> Click on the piano roll and a menu pops up.
> Select 'add keyboard' and you get a piano keyboard that you can add notes
> to the piano roll.
>
> Karl
>
>
> If the score player had a menu item to add a track then we could do this
> without Smalltalk code, right?
>
> - Bert -
>
Yes, a few menu items could do most of the job
Karl

>
>
>
>> Stephen
>>
>> On Mon, Jul 11, 2011 at 10:37 AM, Bert Freudenberg <bert at freudenbergs.de>wrote:
>>
>>> Hi Christine,
>>>
>>> you can do "test counter > 5 and counter < 10" using two nested tests.
>>> The first would test for "counter > 5" and in its "yes" case there would be
>>> a test for "counter < 10". Of course that would be tedious for a whole song.
>>>
>>> Here is a way to use the timer as suggested by Steve:
>>>
>>> <PastedGraphic-12.png>
>>>
>>>
>>> Each note is just a rectangle with an embedded text label. It has a
>>> variable for its frequency. Its width represents its duration. Many of them
>>> are put in a holder, and each can have their own frequency. The holder has a
>>> single variable, "until". This holds the timer value for the end of the
>>> currently playing note. When that time has passed, the next "until" is
>>> calculated from the width of the next note, and it is played.
>>>
>>> It's very simple to make more notes, you just duplicate them, and if
>>> necessary change freq and width. You could make a parts bin with all the
>>> preconfigured notes.
>>>
>>> This is similar to (though a lot simpler than) what I showed at
>>> Squeakfest. Ideas from that talk could be integrated as well - e.g., instead
>>> of playing the note right in the holder's script, each note could have a
>>> script that gets activated by the holder, and then could do more interesting
>>> things (like playing a rondo by repeating themes in ABACA form etc).
>>>
>>> - Bert -
>>>
>>> On 11.07.2011, at 14:34, Steve Thomas wrote:
>>>
>>> 1) You can use the timer in the playfield category (can change decimal
>>> places I believe accurate to milliseconds)
>>>
>>> 2) Use a "piano roll" and place notes on the roll and have a "needle"
>>> move across the roll (or the roll move) and when the "needle" touches the
>>> note, it will play that note.
>>>
>>> You could have kids play a frequency based on it's y position and have
>>> them draw a score.  They could also have the note sustain based on its
>>> length.  You can also change the tempo by moving the needle at different
>>> speeds.
>>>
>>> Stephen
>>>
>>> On Mon, Jul 11, 2011 at 7:04 AM, Christine Murakami <
>>> cmurakami at columbusschoolforgirls.org> wrote:
>>>
>>>> Hi everyone!
>>>>
>>>> I have been working with students on creating music lessons, and there
>>>> is a gap in my knowledge of Etoys that is preventing them from going further
>>>> in their projects.
>>>>
>>>> Many of them would like a song to play (using the play frequency tile).
>>>> The only way I can think to do this is to either create a variable counter
>>>> that counts a beat or to use the playfield counter. Either way, it seems
>>>> like Etoys ought to have a command that does something like "while counter >
>>>> 5 and counter <10 play frequency 880" or even using a test in a similar way:
>>>> "test counter > 5 and counter < 10".  I just can't figure out how to have a
>>>> sound play for a specific amount of time - especially a few beats into the
>>>> song. The first few we can fudge, but after that it gets too complicated. I
>>>> need to help them find a better solution.
>>>>
>>>> I've looked at both Pling and the chord game for suggestions, which
>>>> helped with other issues but not this one.
>>>>
>>>> Any suggestions would be most appreciated! I've been struggling with
>>>> this since early May!
>>>>
>>>> Thanks!
>>>>
>>>> Christine
>>>> _______________________________________________
>>>
>>>
>>>
>>>
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>>
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