{"id":1603,"date":"2004-01-09T08:14:00","date_gmt":"2004-01-09T08:14:00","guid":{"rendered":"http:\/\/www.celesteh.com\/blog\/2004\/01\/09\/quick-jjicalc-tutorial-launching\/"},"modified":"2015-06-19T00:26:30","modified_gmt":"2015-06-18T23:26:30","slug":"quick-jjicalc-tutorial-launching","status":"publish","type":"post","link":"https:\/\/www.celesteh.com\/blog\/2004\/01\/09\/quick-jjicalc-tutorial-launching\/","title":{"rendered":""},"content":{"rendered":"

Quick JJiCalc<\/a> Tutorial<\/h2>\n

Launching JJiCalc<\/h3>\n

After you download the software to your computer, you can run it by
\ndouble-clicking on JJiCalc.jar. Or, if you have a command prompt,
\nyou can type “java -jar JJiCalc.jar” .<\/p>\n

Opening Files<\/h3>\n

Once the software is launched, click on the file menu and select open.
\nA dialog box will come up listing files and directories on your computer.
\nThis box may look different from ones that you are used to. On OS X, the
\nbox will list files in the root directory. If you want to get to your
\nhome directory, click on the Users folder, then on your directory name.
\nGo to the directory where you put the software. In the JJiCalc folder,
\nthere is a folder called tuning. Go there and open the file called
\nold_grandad.jic
\nEight tuning ratios will appear in the top of the tuning table. The
\ntitle “Old Grandad” will appear in the title bar. (If you want to change
\nthe name, just type in the title field.) On the top right hand side
\nof the application window are some buttons. One of them is called
\n“Comments.” If you click on comments, you can view the comments made about
\nthe scale.<\/p>\n

Lattice<\/h3>\n

Click the button marked “Lattice” to see the tuning lattice for the scale.
\nA new window will pop up, which shows ratios connected by lines. If you
\nwant to hear a tuning ratio, you can click on it in the lattice. Click
\non 3\/2. The box around the ratio will turn gray and you should hear the
\nsound of the ratio being played. If you don’t hear anything and you’ve made
\nsure that sounds are working on your computer, you may need to update
\nyour Java libraries, especially Swing.
\nIf you click again on the ratio, it will stop playing. You can play
\nany number of ratios at the same time as you would like. Click on 3\/2,
\n5\/4 and 1\/1.<\/p>\n

Pop-up Menus<\/h3>\n

You can also play ratios directly from the tuning table. If you have a
\nmulti-button mouse, right click on the numerator or denominator of one of
\nthe ratios. If you are on a macintosh with a single-button mouse, option
\nclick on the numerator or denominator. A pop-up menu will appear with
\nthe options “Enable Sound”, “Freeze this Cell”, and “Clear this Cell”. To
\nhear the ratio, select “Enable Sound.” To stop hearing the ratio, right
\nor control click again and select “Disable Sound.”
\nFrozen cells can’t be played. Also, they can’t be cleared and will not
\nbe sorted. To freeze a cell, right or control click on the cell for the
\npop-up menu. To defrost a cell, do the same thing again, but select
\n“Defrost this Cell”. To erase the contents of a cell and remove a ratio
\nfrom the table, select “Clear this Cell”.<\/p>\n

Cents, Hertz, Fret Position<\/h3>\n

In the middle of the bottom of the application, there is a section of
\nbuttons labelled “View As.” Click the one labelled “ET +-Cents”. This
\nwill calculate the closest Equally Tempered pitches, plus or minus the
\ncents needed to get your tuning. In the gray boxes below each ratio,
\nyou should see a postive or negative number indicating the cents to add
\nor subtract, with the closest ET pitch below that. The JJiCalc assumes
\nthat 1\/1 is C0, so therefore 5\/4 is E0 -13.7 cents.
\nTo calculate Hertz, click the button marked Hertz in the “View As”
\nsection. 1\/1 defaults to 440. If you would like to use a different
\nbase frequency, on the bottom right is a section called “base frequency.”
\nType in what frequency you would like in the text area marked “1\/1 freq”.
\nThen, click the button “Update Base”. If you play the ratios, they will
\nsound at the new frequencies. The displayed Hertz will not change,
\nhowever, until you click the “Hertz” button again in the “View As” area.
\nIf you click the button “fret pos”, it will calculate fret positions
\nfor you. The top number is the integer part of the fret position and the
\nbottom number is the decimal section. Below 3\/2, there is 0. in the top
\nbox and 3333 in the bottom box. Thus, for a string 1 meter long,
\nthe fret position for 3\/2 would be at 0.3333 meters.
\nYou can change the string length by typing it in the text area labelled
\n“Str. Len.” and then clicking the button labelled “string len”. This will
\ncause your fret positions to recompute. There is a known bug: The
\nrecomputed numbers will be incorrect.<\/em> After you change the String
\nLength, click the “fret pos” button again to figure out the correct fret
\npositions.<\/p>\n

Adding New Ratios<\/h3>\n

Go to an empty table cell and (left) click in the numerator box. type
\n15 and then in the denominator box, type 16. This adds a 15\/16 minor
\nsecond. If you click the lattice button, you will see your new
\nfraction in the lattice.
\nThe JJiCalc automatically reduces your fractions for you. In another empty
\ncell, enter in 32\/30. As soon as you click off of the cell, it will
\nreduce to 16\/15. There is an option under the Configuration menu to turn
\nthis reduction off. This is a known bug: Your fractions will always
\nreduce.<\/em><\/p>\n

The Configuration Menu<\/h3>\n

One thing that works in the configuration menu is changing the wave
\nform setting. You can hear your fractions played as sine waves,
\nsquare waves or sawtooth waves.<\/p>\n

Sorting<\/h3>\n

all of our tunings are in scale order except for the new one, 16\/15.
\nOn the right is a button marked “Sort”. Click it to but the ratios
\nin order from smallest to largest.
\nAll of the things in the gray boxes below the ratios will clear when
\nyou hit sort.<\/p>\n

Saving<\/h3>\n

When you save your file, all of the data including the 1\/1 frequency,
\nthe title, the comments, the ratios and the stuff written in the gray
\nboxes below the ratios all get saved. Saving a tuning gives you the same
\nkind of dialog box you got when you openned old_grandad.jic. If you
\ntype in the name of a file that already exists, a box will appear to
\nask if you’re sure you want to overwrite the old file.<\/p>\n

Other Formats<\/h4>\n

If you don’t want to save anyhting but the title, the comments and the
\nratios (but not the stuff in the gray boxes), go to the File menu, then
\nlook in the Export submenu and select “Ratios only.”
\nJJiCalc also supports the Scala file format. To save your tuning as a
\nScala file, select “Scala File” under the Export menu. There is a very
\nlarge set of tunings in the Scala format that you can download from http:\/\/www.xs4all.nl\/~huygensf\/doc\/scales.zip<\/a>. To open
\nthese tunings, select “Scala File” from the import menu. Not all Scala
\ntunings are Just Intoned. If the Scala tuning that you open contains
\nsome non-just tunings, JJiCalc will approximate them as fractions.<\/p>\n","protected":false},"excerpt":{"rendered":"

Quick JJiCalc Tutorial Launching JJiCalc After you download the software to your computer, you can run it by double-clicking on JJiCalc.jar. Or, if you have a command prompt, you can type “java -jar JJiCalc.jar” . Opening Files Once the software is launched, click on the file menu and select open. A dialog box will come … Continue reading <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"activitypub_content_warning":"","activitypub_content_visibility":"","activitypub_max_image_attachments":4,"activitypub_interaction_policy_quote":"anyone","activitypub_status":"","footnotes":""},"categories":[1],"tags":[76,65,166],"class_list":["post-1603","post","type-post","status-publish","format-standard","hentry","category-uncategorised","tag-celesteh","tag-coding","tag-tuning"],"_links":{"self":[{"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/posts\/1603","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/comments?post=1603"}],"version-history":[{"count":1,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/posts\/1603\/revisions"}],"predecessor-version":[{"id":3855,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/posts\/1603\/revisions\/3855"}],"wp:attachment":[{"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/media?parent=1603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/categories?post=1603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.celesteh.com\/blog\/wp-json\/wp\/v2\/tags?post=1603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}