{"id":9567,"date":"2014-01-19T19:10:55","date_gmt":"2014-01-19T19:10:55","guid":{"rendered":"http:\/\/zerokidz.com\/ideas\/?p=9567"},"modified":"2014-06-15T02:50:30","modified_gmt":"2014-06-15T06:50:30","slug":"converting-iq-audio-files-using-sox","status":"publish","type":"post","link":"https:\/\/reactivemusic.net\/?p=9567","title":{"rendered":"converting IQ audio files using sox"},"content":{"rendered":"<p>To get information about a file:<\/p>\n<div class=\"panel\">\n<pre># sox --i 10meter96.wav<\/pre>\n<pre><\/pre>\n<pre>Input File : &#039;10meter96.wav&#039;\r\nChannels : 2\r\nSample Rate : 96000\r\nPrecision : 16-bit\r\nDuration : 00:00:16.50 = 1584387 samples ~ 1237.8 CDDA sectors\r\nFile Size : 6.34M\r\nBit Rate : 3.07M\r\nSample Encoding: 16-bit Signed Integer PCM<\/pre>\n<pre><\/pre>\n<pre>#<\/pre>\n<\/div>\n<p>To convert the sample rate:<\/p>\n<div class=\"panel\">\n<pre># sox 10meter96.wav -r 44100 10meter44.wav<\/pre>\n<\/div>\n<p><cite>More useful hints about sox by Selvaganeshan at &#8220;The Geek Stuff&#8221;<\/cite><\/p>\n<p><a href=\"http:\/\/www.thegeekstuff.com\/2009\/05\/sound-exchange-sox-15-examples-to-manipulate-audio-files\/\">http:\/\/www.thegeekstuff.com\/2009\/05\/sound-exchange-sox-15-examples-to-manipulate-audio-files\/<\/a><\/p>\n<p>Here are the commands that worked to get the raw IQ data from rtl_sdr into Max<\/p>\n<div class=\"panel\">\n<p>rtl_sdr -f 94900000 -s 1024000 -g 50 iq.raw<\/p>\n<\/div>\n<p>To convert the above to 96k 16bit wav format<\/p>\n<div class=\"panel\">\n<p>sox -e unsigned-integer -r 1024k -t raw -b 8 -c 2 iq.raw -r 96k -b 16 iq.wav<\/p>\n<\/div>\n<p>Note: I could not get the above conversion to work with device sampling rates below 1024k. Didn&#8217;t try anything higher.<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>To get information about a file: # sox &#8211;i 10meter96.wav Input File : &#039;10meter96.wav&#039; Channels : 2 Sample Rate : 96000 Precision : 16-bit Duration : 00:00:16.50 = 1584387 samples ~ 1237.8 CDDA sectors File Size : 6.34M Bit Rate : 3.07M Sample Encoding: 16-bit Signed Integer PCM # To convert the sample rate: # &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/reactivemusic.net\/?p=9567\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;converting IQ audio files using sox&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[230,21],"tags":[344,182,190,57,243],"class_list":["post-9567","post","type-post","status-publish","format-standard","hentry","category-development","category-dsp","tag-dsp","tag-linux","tag-portfolio","tag-radio","tag-software-defined-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>converting IQ audio files using sox - reactive music<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/reactivemusic.net\/?p=9567\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"converting IQ audio files using sox - reactive music\" \/>\n<meta property=\"og:description\" content=\"To get information about a file: # sox --i 10meter96.wav Input File : &#039;10meter96.wav&#039; 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