{"id":124,"date":"2016-01-08T12:23:07","date_gmt":"2016-01-08T12:23:07","guid":{"rendered":"http:\/\/www.rangakrish.com\/?p=124"},"modified":"2016-01-08T23:50:03","modified_gmt":"2016-01-08T23:50:03","slug":"how-to-use-reaktor-with-opusmodus","status":"publish","type":"post","link":"https:\/\/www.rangakrish.com\/index.php\/2016\/01\/08\/how-to-use-reaktor-with-opusmodus\/","title":{"rendered":"How to Use Reaktor with Opusmodus"},"content":{"rendered":"

For those of you who do not know about Opusmodus<\/strong><\/em> (OM), it is a very powerful and flexible algorithmic music composition environment built in Lisp. It is available for the Mac.<\/p>\n

Today I wanted to understand how to make Opusmodus communicate with Reaktor 6 to play some tunes. The built-in documentation gives a couple of examples of how the interaction can be enabled, but I felt the explanation was too brief for a newbie. Nothing better than learning by experimenting!<\/p>\n

Let us get started.<\/p>\n

First you must configure the MIDI ports on the Mac. For this, launch the Audio MIDI Setup<\/strong><\/em> program located in the Utilities<\/strong><\/em> folder. Select Window>Show MIDI Studio<\/strong><\/em> from the menu. Then double-click on the IAC Driver<\/strong><\/em> icon in the MIDI studio. This will display the IAC Driver properties dialog.<\/p>\n

\"IAC<\/a>
IAC Driver<\/figcaption><\/figure>\n

Make sure you have at least Bus 1<\/strong><\/em> in the list of MIDI ports available.<\/p>\n

To see if the ports can be accessed from Opusmodus, execute the function (midi-destinations)<\/strong><\/em> in OM Listener. This will return a list of MIDI ports available for our use. See figure.<\/p>\n

\"MIDI<\/a>
MIDI Destinations<\/figcaption><\/figure>\n

You can see that 4 ports have been set up on my Mac. Each port is shown with its number as well as name.<\/p>\n

Next launch Reaktor. Since Reaktor is going to receive our MIDI messages, we need to ensure that the ports are set up correctly. Select File>Audio and MIDI Settings\u2026<\/strong><\/em> from the menu, and switch to the MIDI tab. IAC Driver (Bus 1)<\/strong><\/em> must be turned on if it is off. For now we are not concerned with\u00a0the other ports since we won\u2019t be using them.<\/p>\n

\"Reaktor<\/a>
Reaktor MIDI Settings<\/figcaption><\/figure>\n

Next, we load the pre-installed synthesizer Green Matrix.ens<\/strong><\/em>. For this experiment, any synth will do since our objective is only to understand the interface between OM and Reaktor, and not to create professional music.<\/p>\n

\"Loading<\/a>
Loading a synthesizer<\/figcaption><\/figure>\n

The next step is to configure the connection settings for this synthesizer. Click the EDIT<\/strong><\/em> button and then the Check mark<\/strong><\/em> at the top left to view the connection settings.<\/p>\n

We are only interested in the first two parameters. Select IAC Driver (Bus 1)<\/strong><\/em> for External<\/strong><\/em> and use either 1<\/strong><\/em> or Omni<\/strong><\/em> for the Channel<\/strong><\/em> parameter.<\/p>\n

\"Connection<\/a>
Connection settings for the synth<\/figcaption><\/figure>\n

Now we are ready to program in OM. The following is a simple program fragment to test the communication.<\/p>\n

\"Program-1\"<\/a>
Program-1<\/figcaption><\/figure>\n

The important point to note here is the use of :port<\/strong><\/em> option in the instrument section with a value of 0<\/strong><\/em>. You can also use the string name of the port if you wish. When you Evaluate and Play<\/strong><\/em> the program, you can hear the notes being played through Reaktor\u2019s Green Matrix synth.<\/p>\n

Let us now make it a bit more interesting. Opusmodus allows us\u00a0to send control parameters, in addition to MIDI notes. Likewise, Reaktor allows us\u00a0to manipulate device parameters through control codes. For this experiment, I decided to control the Pitch<\/strong><\/em> knobs of Oscillators 1, 2 and 3<\/strong><\/em> by sending values from the program. To do that, we\u00a0have to configure these UI controls such that each gets a unique control number and is enabled for MIDI input. See the screenshot (shows the settings for Oscillator 1).<\/p>\n

\"Configure<\/a>
Configure panel controls<\/figcaption><\/figure>\n

I assigned CC Number<\/strong><\/em> 1 for Oscillator 1<\/strong><\/em>, 2 for Oscillator 2<\/strong><\/em>, and 3 for Oscillator 3<\/strong><\/em>. Then I modified the OM program to emit different control parameters as the notes are being emitted.<\/p>\n

\"Program-2\"<\/a>
Program-2<\/figcaption><\/figure>\n

Notice the use of :controllers<\/strong><\/em> option with a list of various control codes and their values. As before, when you Evaluate and Play<\/strong><\/em> this program, you can see that the knobs on the panel keep changing their positions dynamically as notes are played through the synth! Exciting, isn\u2019t it?<\/p>\n

The few hours that I spent on this experiment was definitely worth it. I learnt a few things about Reaktor and OM that I did not know before.<\/p>\n

Today\u2019s post has been\u00a0about using MIDI to communicate between programs, in particular between Opusmodus and Reaktor. In an earlier post<\/a>\u00a0I explained how you can control Reaktor using OSC. You may want to check that out too.<\/p>\n","protected":false},"excerpt":{"rendered":"

For those of you who do not know about Opusmodus (OM), it is a very powerful and flexible algorithmic music composition environment built in Lisp. It is available for the Mac. Today I wanted to understand how to make Opusmodus communicate with Reaktor 6 to play some tunes. The built-in documentation gives a couple of […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[18,5,17],"tags":[38,37,2],"class_list":["post-124","post","type-post","status-publish","format-standard","hentry","category-lisp","category-music","category-programming","tag-midi","tag-opusmodus","tag-reaktor"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9OLnF-20","jetpack-related-posts":[{"id":1501,"url":"https:\/\/www.rangakrish.com\/index.php\/2019\/03\/20\/controlling-reaktor-from-opusmodus-using-osc\/","url_meta":{"origin":124,"position":0},"title":"Controlling Reaktor from Opusmodus Using OSC","author":"admin","date":"March 20, 2019","format":false,"excerpt":"I am a great fan of Opusmodus\u00a0software. 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There are many\u00a0more advanced features in the library and I will try to discuss them in future posts. 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