Select Add Component \u2192 New Script in the Inspector, and call it \u201cMicrophoneInput\u201d<\/li>\n<\/ol>\nTo manage the bulk of the microphone input, we can copy from the InputCapture.cs<\/em> file included in the ScriptSample07_InputCapture<\/em> project that comes with the CRIWARE SDK for Unity. This script provides some handy boilerplate code that handles a lot of safeguarding from errors, such as trying to access a microphone that doesn\u2019t exist etc.<\/p>\nI have kept the script largely the same, only removing the code related to drawing the waveform with the Line Renderer and adding in the code necessary to control the Wind Zone (see the script attached to the start of this blog).
\n <\/p>\n
Variables<\/h2>\n\r\n\r\n CriAtomExMic mic;\r\n bool isRecording;\r\n float[] micdata = new float[512];\r\n\r\n public WindZone wind;\r\n<\/code>\r\n<\/pre>\nThe global variables defined at the top offer a good overview of what is being achieved, and how the edited script differs from the example one.<\/p>\n
\n- First, we create the variable \u201cmic\u201d to access the CriAtomExMic<\/em> class<\/li>\n
- Next, we create the Boolean \u201cisRecording\u201d to keep track of our recording state<\/li>\n
- Then, we create the buffer \u201cmicdata\u201d for our microphone data and define its size<\/li>\n
- And finally, we create a public variable for our Wind Zone, where it can then be attached to our script in the Inspector<\/li>\n<\/ol>\n
![\"15-3\"](\"https:\/\/blog.criware.com\/wp-content\/uploads\/2019\/09\/15-3-1.png\")
\n <\/p>\n
Update<\/h2>\n\r\n\r\n void Update()\r\n {\r\n if (isRecording)\r\n {\r\n if (Input.GetKeyUp(KeyCode.F)) {\r\n wind.windMain = 0;\r\n StopMic();\r\n }\r\n }\r\n else\r\n {\r\n if (Input.GetKeyDown(KeyCode.F)) {\r\n StartMic();\r\n }\r\n }\r\n\r\n if (mic == null) {\r\n return;\r\n }\r\n\r\n while (true) {\r\n \/\/ Get audio input data\r\n uint numSamples = mic.ReadData(micdata);\r\n if (numSamples == 0) {\r\n break;\r\n }\r\n }\r\n\r\n \/\/ Control the strength of the wind with microphone input data\r\n for (int i = 0; i < micdata.Length; i++) {\r\n wind.windMain = Mathf.Abs(micdata[i] * 250);\r\n }\r\n }\r\n\r\n<\/code>\r\n<\/pre>\nThe revised update method is straight-forward. Instead of using a separate UI overlay as in the example, we are going to control the on-off state of the microphone using the \u201cF\u201d key. If the \u201cF\u201d is pressed, we call the StartMic<\/em> function defined by the example code, which handles creating and assigning the microphone. If the \u201cF\u201d is released, we call the StopMic <\/em>function, which stops and disposes of the microphone instance, freeing up the system resources.<\/p>\nThe \u201cif (mic == null)<\/em>\u201d works as a failsafe, preventing weird potential behaviour from occurring as a result of trying to access some data if no microphone has been detected. If there is a microphone, the script continues to read audio data into our buffer.<\/p>\nThe last part of our update method is where the fun happens! Here we are looping through our buffer, controlling the strength of our wind via windMain<\/em> with the scaled value of our microphone input. The absolute (Mathf.Abs) value of our input data is taken since these values will otherwise oscillate between positive and negative values (which would result in our wind force periodically reversing).
\n <\/p>\nConclusion<\/h2>\n
Of course, this system could use a lot of tweaking to ensure, for example, particles are only affected if they are within a certain distance of the player. However, even with a conservative amount of code, we can already start to flesh out some sophisticated input-driven control! This can be especially handy for VR, as headsets usually have microphones integrated into them, and interacting with the world in this way can significantly enhance immersion.<\/p>\n","protected":false},"excerpt":{"rendered":"
Introduction Sound in games is often a reactive one-way system, where the player\u2019s interactions with the world result in sounds<\/p>\n","protected":false},"author":2,"featured_media":2525,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[5,7],"tags":[],"class_list":["post-2503","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-adx","category-tutorials"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/posts\/2503","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/comments?post=2503"}],"version-history":[{"count":14,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/posts\/2503\/revisions"}],"predecessor-version":[{"id":2523,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/posts\/2503\/revisions\/2523"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/media\/2525"}],"wp:attachment":[{"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/media?parent=2503"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/categories?post=2503"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.criware.com\/index.php\/wp-json\/wp\/v2\/tags?post=2503"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}