{"id":16123,"date":"2026-04-17T03:45:22","date_gmt":"2026-04-17T03:45:22","guid":{"rendered":"https:\/\/sistc.com\/?p=16123"},"modified":"2026-06-16T09:25:53","modified_gmt":"2026-06-16T09:25:53","slug":"blog-oss-audio-interface-mems-microphone-array-guide","status":"publish","type":"post","link":"https:\/\/sistc.com\/zh\/blog-oss-audio-interface-mems-microphone-array-guide\/","title":{"rendered":"OSS\uff1a\u9ad8\u6027\u80fd\u9ea6\u514b\u98ce\u9635\u5217\u96c6\u6210\u7684\u8de8\u5e73\u53f0\u97f3\u9891\u63a5\u53e3\u6307\u5357"},"content":{"rendered":"<p class=\"wp-block-paragraph\"><strong>\u5df2\u51fa\u7248\uff1a<\/strong> 2026 \u5e74 4 \u6708 17 \u65e5 <strong>\u7c7b\u522b<\/strong> \u6280\u672f\u5de5\u7a0b\/\u97f3\u9891\u89e3\u51b3\u65b9\u6848 <strong>\u4f5c\u8005\uff1a<\/strong> Sueny\uff08\u65e0\u9521\u7845\u6e90\u79d1\u6280\u9996\u5e2d\u6280\u672f\u5b98\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u57fa\u4e8e Unix \u7684\u5d4c\u5165\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5b9e\u73b0\u7a33\u5b9a\u3001\u4f4e\u5ef6\u8fdf\u7684\u97f3\u9891\u6355\u83b7\u662f\u5de5\u7a0b\u5e08\u9762\u4e34\u7684\u4e00\u9879\u91cd\u8981\u6311\u6218\u3002\u56e0\u4e3a <strong>\u9ea6\u514b\u98ce\u9635\u5217<\/strong> \u56e0\u6b64\uff0c\u9009\u62e9\u4e00\u6b3e\u4fbf\u643a\u5f0f\u97f3\u9891 API \u81f3\u5173\u91cd\u8981\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u6587\u63a2\u8ba8\u4e86 <strong>\u5f00\u653e\u5f0f\u97f3\u54cd\u7cfb\u7edf\uff08OSS\uff09<\/strong>-\u7edf\u4e00\u97f3\u9891\u63a5\u53e3\uff0c\u5e76\u63d0\u4f9b\u5b9e\u7528\u6307\u5357\uff0c\u6307\u5bfc\u5982\u4f55\u5229\u7528\u5b83\u5b9e\u73b0\u9ad8\u7ea7 <strong>MEMS \u9ea6\u514b\u98ce\u9635\u5217<\/strong> \u5e94\u7528\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">1.\u4e3a\u4ec0\u4e48\u9009\u62e9\u5f00\u653e\u6e90\u7801\u8f6f\u4ef6\uff1f\u514b\u670d Unix \u97f3\u9891\u788e\u7247<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u5f00\u653e\u6e90\u7801\u8f6f\u4ef6\u4e4b\u524d\uff0c\u6bcf\u4e2a Unix \u4f9b\u5e94\u5546\uff08Sun\u3001\u60e0\u666e\u3001IBM\uff09\u90fd\u63d0\u4f9b\u4e13\u6709\u7684\u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3\u3002\u4e3a\u4e00\u4e2a\u5e73\u53f0\u7f16\u5199\u7684\u4ee3\u7801\u5fc5\u987b\u4e3a\u53e6\u4e00\u4e2a\u5e73\u53f0\u91cd\u65b0\u7f16\u5199\u3002. <strong>OSS\uff08\u5f00\u653e\u5f0f\u97f3\u54cd\u7cfb\u7edf\uff09<\/strong> \u901a\u8fc7\u63d0\u4f9b\u7edf\u4e00\u7684\u5e94\u7528\u7a0b\u5e8f\u63a5\u53e3\uff0c\u63d0\u4f9b <strong>\u6e90\u7801\u7ea7\u53ef\u79fb\u690d\u6027<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f00\u53d1\u4eba\u5458 <strong>\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff08SISTC\uff09<\/strong> \u901a\u8fc7 OSS \u548c\u6211\u4eec\u7684\u5168\u7403\u5408\u4f5c\u4f19\u4f34\uff0cOSS \u4e3a\u96c6\u6210\u786c\u4ef6\u548c\u8f6f\u4ef6\u89e3\u51b3\u65b9\u6848\u63d0\u4f9b\u4e86\u4e00\u4e2a\u5f3a\u5927\u7684\u57fa\u7840\uff0c\u4f8b\u5982\u5728 Unix \u73af\u5883\u4e2d\u652f\u6301 MIDI\u3001\u8bed\u97f3\u8bc6\u522b\u548c\u540c\u6b65\u97f3\u9891\u89c6\u9891\u64ad\u653e\uff0c\u4e0e Windows \u548c macOS \u7684\u529f\u80fd\u76f8\u5339\u914d\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">2.\u57fa\u672c\u6982\u5ff5\uff1a\u4ece\u786c\u4ef6\u5230\u903b\u8f91<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u914d\u7f6e <strong>SISTC \u7684\u9ad8 SNR MEMS \u9ea6\u514b\u98ce<\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u6570\u5b57\u97f3\u9891\u8bbe\u5907\uff08\u7f16\u89e3\u7801\u5668\/DSP\uff09<\/strong>:\u5904\u7406\u6570\u5b57\u5316\u3002\u4e3b\u8981\u6307\u6807\u5305\u62ec\u91c7\u6837\u7387\uff088K \u81f3 96KHz\uff09\u3001\u901a\u9053\u6570\uff08\u5355\u58f0\u9053\u3001\u7acb\u4f53\u58f0\u6216\u9635\u5217\uff09\u548c\u5206\u8fa8\u7387\uff088 \u4f4d\u300116 \u4f4d\uff09\u3002.<\/li>\n\n\n\n<li><strong>\u6df7\u5408\u5668<\/strong>:\u63a7\u5236\u97f3\u91cf\u5927\u5c0f\u548c\u5207\u6362\u8f93\u5165\u6e90\uff08\u5982\u5185\u90e8 MEMS \u9ea6\u514b\u98ce\u4e0e\u7ebf\u8def\u8f93\u5165\uff09\u3002.<\/li>\n\n\n\n<li><strong>\u8bbe\u5907\u6587\u4ef6<\/strong>:Unix \u5c06\u8bbe\u5907\u89c6\u4e3a\u6587\u4ef6\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7 <code>\u5f00<\/code>, <code>\u9605\u8bfb<\/code>, <code>\u5199\u9053<\/code>\u4ee5\u53ca <code>ioctl<\/code>.\n<ul class=\"wp-block-list\">\n<li><code>\/dev\/dsp<\/code>:\u5f55\u5236\u548c\u56de\u653e\u7684\u4e3b\u8981\u8bbe\u5907\u3002.<\/li>\n\n\n\n<li><code>\/dev\/mixer<\/code>:\u7528\u4e8e\u8c03\u8282\u589e\u76ca\u548c\u8f93\u5165\u6e90\u3002.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3.\u4f7f\u7528\u5f00\u653e\u6e90\u7801\u8f6f\u4ef6\u8fdb\u884c\u5b9e\u7528\u7f16\u7a0b<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">3.1 \u6253\u5f00\u8bbe\u5907<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include \n#include \n#include \n#include \n\nint audio_fd\uff1b\nif ((audio_fd = open(\"\/dev\/dsp\", O_RDONLY, 0)) == -1) {\n    perror(\"Error opening \/dev\/dsp\")\uff1b\n    exit(1)\uff1b\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3.2 \u5f55\u97f3\u548c\u56de\u653e<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5f53\u4ece <strong>\u9ea6\u514b\u98ce\u9635\u5217<\/strong>, \u5bf9\u4e8e 16 \u4f4d\u7acb\u4f53\u58f0\u8bbe\u7f6e\uff0c\u6570\u636e\u4f20\u8f93\u901f\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a <code>\u91c7\u6837\u7387 * \u901a\u9053 * \uff08\u6bd4\u7279\u6df1\u5ea6 \/ 8\uff09<\/code>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int len\uff1b\n\u65e0\u7b26\u53f7 char audio_buffer[4096]\uff1b\n\u5982\u679c ((len = read(audio_fd, audio_buffer, sizeof(audio_buffer))) == -1) {\n    perror(\"Audio read failed\")\uff1b\n}\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">4.\u4f18\u5316\u591a\u901a\u9053\u9ea6\u514b\u98ce\u9635\u5217<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u5c31\u662f\u786c\u4ef6\u4e0e\u8f6f\u4ef6\u7684\u7ed3\u5408\u3002\u5982\u679c\u60a8\u4f7f\u7528 <strong>SISTC \u7684 4 \u9ea6\u514b\u98ce\u6216 6 \u9ea6\u514b\u98ce\u9635\u5217\u6a21\u5757<\/strong>, \u56e0\u6b64\uff0c\u4fe1\u9053\u95f4\u7684\u65f6\u95f4\u540c\u6b65\u5bf9\u4ee5\u4e0b\u7b97\u6cd5\u81f3\u5173\u91cd\u8981 <strong>\u6ce2\u675f\u6210\u5f62<\/strong> \u4e0e <strong>\u56de\u58f0\u6d88\u9664\uff08AEC)\u3002<\/strong>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bbe\u7f6e\u591a\u901a\u9053\u8f93\u5165<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728 OSS \u4e2d\uff0c\u5fc5\u987b\u660e\u786e\u8bbe\u7f6e\u901a\u9053\u6570\uff0c\u4ee5\u786e\u4fdd\u6b63\u786e\u6355\u83b7\u4ea4\u9519\u6570\u636e\u6d41\uff08Mic1\u3001Mic2\u3001Mic3......\uff09\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int channels = 4; \/\/ 4 \u4e2a\u9ea6\u514b\u98ce\u9635\u5217\u793a\u4f8b\nif (ioctl(audio_fd, SNDCTL_DSP_CHANNELS, &amp;channels) == -1) {\n    perror(\"SNDCTL_DSP_CHANNELS failed\")\uff1b\n}\n<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8bbe\u7f6e\u91c7\u6837\u7387\u548c\u683c\u5f0f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u4fdd\u6301\u4eba\u5de5\u667a\u80fd\u8bed\u97f3\u5f15\u64ce\u7684\u9ad8\u4fdd\u771f\uff0c\u6211\u4eec\u5efa\u8bae <strong>16 \u4f4d\u5e26\u7b26\u53f7 Little Endian (AFMT_S16_LE)<\/strong>:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int format = AFMT_S16_LE\uff1b\nioctl(audio_fd, SNDCTL_DSP_SETFMT, &amp;format)\uff1b\n\nint speed = 16000; \/\/ \u8bed\u97f3\u8bc6\u522b\u6807\u51c6\nioctl(audio_fd, SNDCTL_DSP_SPEED, &amp;speed)\uff1b;\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">5.\u6df7\u97f3\u5668\u7f16\u7a0b\uff1a\u7cbe\u786e\u589e\u76ca\u63a7\u5236<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u8fdc\u573a\u62fe\u97f3\uff0c\u53ef\u901a\u8fc7 <code>\/dev\/mixer<\/code> \u8fd9\u5bf9\u9632\u6b62\u524a\u6ce2\u540c\u65f6\u4fdd\u6301\u4fe1\u53f7\u6e05\u6670\u5ea6\u81f3\u5173\u91cd\u8981\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>int vol\uff1b\n\/\/ \u8bbe\u7f6e\u9ea6\u514b\u98ce\u97f3\u91cf\uff080-100\uff09\nvol = 90\uff1b\nioctl(mixer_fd, SOUND_MIXER_WRITE(SOUND_MIXER_MIC), &amp;vol)\uff1b;\n<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">6.\u884c\u4e1a\u5e94\u7528\u548c SISTC \u89e3\u51b3\u65b9\u6848<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u867d\u7136\u73b0\u4ee3\u7cfb\u7edf\u901a\u5e38\u4f7f\u7528 ALSA\uff0c\u4f46\u5bf9\u4e8e\u7279\u5b9a\u7684\u5d4c\u5165\u5f0f Unix \u53d1\u884c\u7248\u6765\u8bf4\uff0cOSS \u4ecd\u7136\u662f\u4e00\u4e2a\u5f3a\u5927\u3001\u8f7b\u91cf\u7ea7\u7684\u9009\u62e9\u3002\u901a\u8fc7\u5c06 OSS API \u7684\u7b80\u6613\u6027\u4e0e <strong>\u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\uff08SISTC\uff09<\/strong> \u901a\u8fc7\u5148\u8fdb\u7684 MEMS \u4f20\u611f\u5668\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u5b9e\u73b0\u4ee5\u4e0b\u76ee\u6807<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>\u5353\u8d8a\u7684\u4eba\u5de5\u667a\u80fd\u4e92\u52a8<\/strong>:\u9ad8 SNR\uff08\u4fe1\u566a\u6bd4\uff09\u9ea6\u514b\u98ce\u53ef\u4e3a Edge AI \u5f15\u64ce\u63d0\u4f9b\u5e72\u51c0\u7684\u6570\u636e\u3002.<\/li>\n\n\n\n<li><strong>\u964d\u4f4e\u566a\u97f3<\/strong>:\u901a\u8fc7 OSS \u5b9e\u73b0\u7cbe\u786e\u7684\u591a\u58f0\u9053\u540c\u6b65\uff0c\u4ece\u800c\u5b9e\u73b0\u6709\u6548\u7684 ANC\uff08\u4e3b\u52a8\u964d\u566a\uff09\u3002.<\/li>\n\n\n\n<li><strong>\u5168\u7403\u517c\u5bb9\u6027<\/strong>:\u786e\u4fdd\u60a8\u7684\u786c\u4ef6\u5728\u4e0d\u540c\u7684\u5de5\u4e1a Unix\/Linux \u5e73\u53f0\u4e0a\u6027\u80fd\u4e00\u81f4\u3002.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u63a8\u8350\u786c\u4ef6<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8e\u5b9e\u65bd\u4e0a\u8ff0\u89e3\u51b3\u65b9\u6848\u7684\u5f00\u53d1\u4eba\u5458\uff0c\u6211\u4eec\u63a8\u8350\u4f7f\u7528\u6211\u4eec\u7684<a href=\"https:\/\/sistc.com\/zh\/product-category\/sensor-module\/open-source-voice-platforms\/\"> <strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-0-color\">GYKH \u7cfb\u5217\u9ea6\u514b\u98ce\u9635\u5217\u6a21\u5757<\/mark><\/strong><\/a> (\u63d0\u4f9b I2S \u548c USB \u63a5\u53e3\uff09\u3002\u8fd9\u4e9b\u6a21\u5757\u4e13\u4e3a\u4e0e\u517c\u5bb9\u5f00\u653e\u6e90\u7801\u8f6f\u4ef6\u7684\u9a71\u52a8\u7a0b\u5e8f\u65e0\u7f1d\u96c6\u6210\u800c\u8bbe\u8ba1\uff0c\u53ef\u786e\u4fdd\u8f83\u4f4e\u7684 CPU \u5f00\u9500\u548c\u8f83\u9ad8\u7684\u58f0\u5b66\u6027\u80fd\u3002.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7ed3\u8bba<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u638c\u63e1\u4e86 OSS \u63a5\u53e3\uff0c\u5de5\u7a0b\u5e08\u5c31\u80fd\u6784\u5efa\u591a\u529f\u80fd\u3001\u8de8\u5e73\u53f0\u7684\u97f3\u9891\u5e94\u7528\u3002\u5bf9\u4e8e\u9ad8\u7aef\u97f3\u9891\u91c7\u96c6\uff0c\u5f3a\u5927\u7684\u8f6f\u4ef6\u534f\u8bae\u4e0e\u4f18\u8d28\u786c\u4ef6\uff08\u5982 <strong>SISTC MEMS \u9ea6\u514b\u98ce<\/strong> \u662f\u6210\u529f\u7684\u5173\u952e\u3002.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6709\u5173\u4f20\u58f0\u5668\u9635\u5217\u7684\u6280\u672f\u6570\u636e\u8868\u3001NRE \u54a8\u8be2\u6216\u6837\u54c1\u7533\u8bf7\uff0c\u8bf7\u8bbf\u95ee\u6211\u4eec\u7684\u5b98\u65b9\u7f51\u7ad9\uff1a <strong><a target=\"_blank\" rel=\"noreferrer noopener\" href=\"https:\/\/sistc.com\/zh\/\">www.sistc.com<\/a><\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u00a9 2026 \u65e0\u9521\u7845\u6e90\u79d1\u6280\u6709\u9650\u516c\u53f8\u3002\u4fdd\u7559\u6240\u6709\u6743\u5229\u3002.<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Published: April 17, 2026 | Category: Technical Engineering \/ Audio Solutions Author: Sueny (CTO, Wuxi Silicon Source Technology) In the landscape of Unix-based embedded systems, achieving stable and low-latency audio [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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