{"id":3793,"date":"2025-07-07T14:52:07","date_gmt":"2025-07-07T06:52:07","guid":{"rendered":"https:\/\/saludpcb.com\/zh\/?p=3793"},"modified":"2025-09-26T06:15:32","modified_gmt":"2025-09-25T22:15:32","slug":"esp-dsp-fir","status":"publish","type":"post","link":"https:\/\/saludpcb.com\/zh\/esp-dsp-fir\/","title":{"rendered":"ESP-DSP \u7cfb\u5217 2 | \u7528 FIR \u6253\u9020\u9ad8\u6548\u6578\u4f4d\u6ffe\u6ce2\u5668"},"content":{"rendered":"\n<hr class=\"wp-block-separator alignwide has-text-color has-palette-color-1-color has-alpha-channel-opacity has-palette-color-1-background-color has-background is-style-wide\"\/>\n\n\n\n<p><strong>ESP-DSP FIR \u6a21\u7d44<\/strong> \u662f\u6578\u4f4d\u8a0a\u865f\u8655\u7406\uff08DSP\uff09\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u6ffe\u6ce2\u6838\u5fc3\u5143\u4ef6\u4e4b\u4e00\u3002FIR\uff08\u6709\u9650\u8108\u885d\u97ff\u61c9\uff0cFinite Impulse Response\uff09\u6ffe\u6ce2\u5668\u4ee5\u5176\u7a69\u5b9a\u6027\u8207\u7dda\u6027\u76f8\u4f4d\u7279\u6027\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u97f3\u8a0a\u8655\u7406\u3001\u901a\u8a0a\u7cfb\u7d71\u8207\u611f\u6e2c\u5668\u8cc7\u6599\u6de8\u5316\u7b49\u5834\u666f\u3002\u672c\u6587\u5c07\u805a\u7126\u65bc Espressif \u63d0\u4f9b\u7684 FIR \u6a21\u7d44\uff0c\u8aaa\u660e\u5982\u4f55\u904b\u7528\u5176\u9ad8\u6548\u80fd\u7279\u6027\uff0c\u6253\u9020\u7a69\u5b9a\u4e14\u5be6\u7528\u7684<strong>\u6578\u4f4d\u6ffe\u6ce2\u5668<\/strong>\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2025\/07\/ESP-DSP-Series-Building-Efficient-Digital-Filters-with-FIR.jpg\" alt=\"ESP-DSP\" class=\"wp-image-3810\" title=\"\" srcset=\"https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2025\/07\/ESP-DSP-Series-Building-Efficient-Digital-Filters-with-FIR.jpg 1024w, https:\/\/saludpcb.com\/zh\/wp-content\/uploads\/2025\/07\/ESP-DSP-Series-Building-Efficient-Digital-Filters-with-FIR-768x768.jpg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>\u5167\u5bb9<\/h2><nav><ul><li class=\"\"><a href=\"#fir\">FIR \u6ffe\u6ce2\u5668\u7684\u57fa\u672c\u539f\u7406<\/a><\/li><li class=\"\"><a href=\"#esp-dsp--fir\">FIR \u6a21\u7d44\u7279\u8272<\/a><\/li><li class=\"\"><a href=\"#\u74b0\">\u958b\u767c\u74b0\u5883<\/a><\/li><li class=\"\"><a href=\"#\u5c08\u6848\u7d50\u69cb\">\u5c08\u6848\u7d50\u69cb<\/a><\/li><li class=\"\"><a href=\"#\u7a0b\u5f0f\u5be6\u4f5c\">\u7a0b\u5f0f\u5be6\u4f5c<\/a><\/li><li class=\"\"><a href=\"#\u7de8\u8b6f\u548c\u71d2\u9304-1\">\u7de8\u8b6f\u548c\u71d2\u9304<\/a><\/li><li class=\"\"><a href=\"#\u8f38\u51fa\u8207\u6e2c\u8a66\u7d50\u679c\">\u8f38\u51fa\u8207\u6e2c\u8a66\u7d50\u679c<\/a><\/li><li class=\"\"><a href=\"#\u7d50\u8ad6\">\u7d50\u8ad6<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"fir\">FIR \u6ffe\u6ce2\u5668\u7684\u57fa\u672c\u539f\u7406<\/h2>\n\n\n\n<p>FIR \u6ffe\u6ce2\u5668\u7684\u6700\u5927\u7279\u9ede\u662f\u5176\u8f38\u51fa\u50c5\u4f9d\u8cf4\u6709\u9650\u6578\u91cf\u7684\u8f38\u5165\u8a0a\u865f\u9ede\uff0c\u9019\u4f7f\u5f97\u7cfb\u7d71\u6c38\u9060\u7a69\u5b9a\uff0c\u4e14\u53ef\u4ee5\u7cbe\u78ba\u5be6\u73fe\u7dda\u6027\u76f8\u4f4d\uff0c\u907f\u514d\u76f8\u4f4d\u5931\u771f<a rel=\"noreferrer noopener\" target=\"_blank\" href=\"https:\/\/blog.csdn.net\/z754721\/article\/details\/138207006\"><\/a><a rel=\"noreferrer noopener\" target=\"_blank\" href=\"https:\/\/pojenlai.wordpress.com\/2016\/04\/10\/%E6%95%B8%E4%BD%8D%E6%BF%BE%E6%B3%A2%E5%99%A8%E7%9A%84%E5%AD%B8%E7%BF%92%E7%AD%86%E8%A8%98\/\"><\/a>\u3002\u5176\u904b\u7b97\u672c\u8cea\u662f\u5c07\u8f38\u5165\u8a0a\u865f\u7684\u591a\u500b\u9ede\u4e58\u4ee5\u5c0d\u61c9\u7684\u4fc2\u6578\u5f8c\u52a0\u7e3d\uff0c\u7522\u751f\u65b0\u7684\u8f38\u51fa\u9ede\u3002\u900f\u904e\u8abf\u6574\u6ffe\u6ce2\u5668\u968e\u6578\uff08\u4f7f\u7528\u591a\u5c11\u8f38\u5165\u9ede\uff09\u8207\u4fc2\u6578\u8a2d\u8a08\uff0c\u53ef\u4ee5\u9054\u5230\u4f4e\u901a\u3001\u9ad8\u901a\u3001\u5e36\u901a\u7b49\u4e0d\u540c\u6ffe\u6ce2\u6548\u679c<a rel=\"noreferrer noopener\" target=\"_blank\" href=\"https:\/\/blog.csdn.net\/z754721\/article\/details\/138207006\"><\/a>\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"esp-dsp--fir\">FIR \u6a21\u7d44\u7279\u8272<\/h2>\n\n\n\n<p>ESP-DSP \u662f Espressif \u70ba ESP32\u3001ESP32-S3 \u7b49\u6676\u7247\u6253\u9020\u7684\u9ad8\u6027\u80fd\u6578\u4f4d\u4fe1\u865f\u8655\u7406\u5eab\uff0c\u5167\u542b\u591a\u7a2e\u6578\u5b78\u904b\u7b97\u8207\u6ffe\u6ce2\u5668\u5be6\u73fe\uff0c\u5176\u4e2d FIR \u6a21\u7d44\u652f\u63f4\u6d6e\u9ede\u8207\u5b9a\u9ede\u904b\u7b97\uff0c\u4e26\u4e14\u63d0\u4f9b\u62bd\u53d6\uff08Decimation\uff09\u529f\u80fd\uff0c\u65b9\u4fbf\u5728\u4e0d\u540c\u61c9\u7528\u4e2d\u9748\u6d3b\u4f7f\u7528<a href=\"https:\/\/blog.csdn.net\/xu_wenming\/article\/details\/147295558\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a><a href=\"https:\/\/blog.csdn.net\/gitblog_00009\/article\/details\/139139724\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7d50\u69cb\u5316\u7ba1\u7406<\/strong>\uff1a\u5229\u7528\u7d50\u69cb\u9ad4\u7ba1\u7406\u6ffe\u6ce2\u5668\u72c0\u614b\uff0c\u5305\u62ec\u4fc2\u6578\u8207\u5ef6\u9072\u7dda\uff0c\u65b9\u4fbf\u521d\u59cb\u5316\u8207\u904b\u7b97\u3002<\/li>\n\n\n\n<li><strong>\u512a\u5316\u5be6\u73fe<\/strong>\uff1a\u90e8\u5206\u51fd\u6578\u4ee5\u532f\u7de8\u8a9e\u8a00\u7de8\u5beb\uff0c\u91dd\u5c0d ESP32 CPU \u67b6\u69cb\u512a\u5316\uff0c\u78ba\u4fdd\u904b\u7b97\u6548\u7387\u8207\u4f4e\u529f\u8017<a href=\"https:\/\/blog.csdn.net\/gitblog_00009\/article\/details\/139139724\" target=\"_blank\" rel=\"noreferrer noopener\"><\/a>\u3002<\/li>\n\n\n\n<li><strong>\u7c21\u6613\u8abf\u7528<\/strong>\uff1a\u63d0\u4f9b\u521d\u59cb\u5316\u8207\u904b\u7b97\u51fd\u6578\uff0c\u4f7f\u7528\u8005\u53ea\u9700\u6e96\u5099\u4fc2\u6578\u8207\u5ef6\u9072\u7dda\uff0c\u5373\u53ef\u5feb\u901f\u90e8\u7f72\u6ffe\u6ce2\u5668\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u74b0\">\u958b\u767c\u74b0\u5883<\/h2>\n\n\n\n<p>\u5728\u958b\u59cb\u7de8\u7a0b\u4e4b\u524d\uff0c\u8acb\u78ba\u4fdd\u5df2\u5b8c\u6210\u4ee5\u4e0b\u6e96\u5099\u5de5\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/saludpcb.com\/zh\/esp32-tutorial-how-to-create-an-esp32-project-with-vscode\/\">\u5b89\u88dd ESP-IDF \u958b\u767c\u74b0\u5883<\/a> (\u81f3\u5c11\u7248\u672c v5.x \u6216\u66f4\u9ad8)\u3002<\/li>\n\n\n\n<li><a href=\"https:\/\/saludpcb.com\/zh\/esp32-devkit-module-pinout\/\">ESP32 \u958b\u767c\u677f<\/a>\u3002<\/li>\n\n\n\n<li><strong><a href=\"https:\/\/saludpcb.com\/zh\/pid-control-esp32-fourier-reveal\/\">\u5b89\u88dd ESP-DSP<\/a><\/strong> \u51fd\u5f0f\u5eab\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u5c08\u6848\u7d50\u69cb\">\u5c08\u6848\u7d50\u69cb<\/h2>\n\n\n\n<p>\u9019\u662f ESP-IDF \u9810\u8a2d\u7684\u5c08\u6848\u7d50\u69cb\u4e4b\u4e00\u3002\u7576\u4f60\u4f7f\u7528 <code>idf.py create-project<\/code> \u6307\u4ee4\uff0c\u6216\u900f\u904e VS Code \u7684\u5b98\u65b9 ESP-IDF \u64f4\u5145\u5957\u4ef6\u5efa\u7acb\u65b0\u5c08\u6848\u6642\uff0c\u901a\u5e38\u6703\u770b\u5230\u9019\u6a23\u7684\u914d\u7f6e\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>esp32-fir-filter\/\n\u251c\u2500\u2500 CMakeLists.txt\n\u251c\u2500\u2500 main\/\n\u2502   \u251c\u2500\u2500 CMakeLists.txt\n\u2502   \u2514\u2500\u2500 fir_filter_example.c\n\u2514\u2500\u2500 sdkconfig<\/code><\/code><\/pre>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>CMakeLists.txt<\/code>\uff1a\u5c08\u6848\u7684\u4e3b\u5efa\u69cb\u8a2d\u5b9a\u6a94\u3002<\/li>\n\n\n\n<li><code>main\/<\/code>\uff1a\u5305\u542b\u4e3b\u8981\u61c9\u7528\u7a0b\u5f0f\u78bc\u3002<\/li>\n\n\n\n<li><code>fir_filter_example.c<\/code>\uff1a\u672c\u7bc4\u4f8b\u7684\u6838\u5fc3\u7a0b\u5f0f\u78bc\uff0c\u5be6\u4f5c FIR \u6ffe\u6ce2\u5668\u908f\u8f2f\u3002<\/li>\n\n\n\n<li><code>sdkconfig<\/code>\uff1a\u7531 <code>menuconfig<\/code> \u81ea\u52d5\u7522\u751f\u7684\u7d44\u614b\u6a94\uff0c\u8a18\u9304\u76ee\u524d\u5c08\u6848\u7684\u914d\u7f6e\u8a2d\u5b9a\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9019\u6a23\u7684\u67b6\u69cb\u8b93\u6211\u5011\u958b\u767c\u8d77\u4f86\u66f4\u6709\u689d\u7406\uff0c\u4e5f\u65b9\u4fbf\u672a\u4f86\u7dad\u8b77\u6216\u64f4\u5145\u3002\u4e26\u7b26\u5408 ESP-IDF \u5efa\u8b70\u7684\u958b\u767c\u65b9\u5f0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7a0b\u5f0f\u5be6\u4f5c\">\u7a0b\u5f0f\u5be6\u4f5c<\/h2>\n\n\n\n<p>\u9019\u500b\u7bc4\u4f8b\u7a0b\u5f0f\u793a\u7bc4\u5982\u4f55\u4f7f\u7528 ESP-DSP \u51fd\u5f0f\u5eab\u4f86\u5efa\u7acb\u4e26\u61c9\u7528\u4e00\u500b FIR\uff08\u6709\u9650\u8108\u885d\u97ff\u61c9\uff09\u6578\u4f4d\u6ffe\u6ce2\u5668\uff0c\u91dd\u5c0d\u4e00\u500b\u7c21\u55ae\u7684\u65b9\u6ce2\u8a0a\u865f\u9032\u884c\u5e73\u6ed1\u8655\u7406\u3002<br>\u82e5\u9700\u66f4\u7cbe\u78ba\u7684\u6ffe\u6ce2\u6548\u679c\uff0c\u4e5f\u53ef\u642d\u914d <strong>MATLAB\u3001Python\uff08SciPy\uff09\u6216 FIR filter designer \u5de5\u5177<\/strong> \u8a2d\u8a08\u66f4\u7cbe\u7dfb\u7684\u4f4e\u901a\u3001\u9ad8\u901a\u3001\u5e36\u901a\u6216\u5e36\u963b\u6ffe\u6ce2\u5668\uff0c\u4e26\u5c0e\u51fa\u5c0d\u61c9\u4fc2\u6578\u4f7f\u7528\u65bc\u672c\u7bc4\u4f8b\u4e2d\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"cpp\" class=\"language-cpp\">#include &lt;stdio.h&gt;\n#include \"esp_log.h\"\n#include \"esp_dsp.h\"\n#include \"dsp_filter_fir.h\"\n\n#define FILTER_TAP_NUM 32\n#define SIGNAL_LENGTH 128\n\n\/\/ Define log tag for this module\nstatic const char *TAG = \"FIR_FILTER_EXAMPLE\";\n\n\/\/ Simplified low-pass filter coefficients (replace as needed)\nfloat filter_coeffs[FILTER_TAP_NUM] = {\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125,\n    0.03125, 0.03125, 0.03125, 0.03125\n};\n\nfloat input_signal[SIGNAL_LENGTH];\nfloat output_signal[SIGNAL_LENGTH];\nfloat delay_line[FILTER_TAP_NUM];\n\ndsps_fir_t fir; \/\/ FIR filter structure\n\nvoid app_main(void) {\n    esp_err_t ret;\n\n    ESP_LOGI(TAG, \"ESP-DSP FIR filter example started\");\n\n    \/\/ Initialize FIR filter\n    ret = dsps_fir_init_f32(&amp;fir, filter_coeffs, delay_line, FILTER_TAP_NUM);\n    if (ret != ESP_OK) {\n        ESP_LOGE(TAG, \"FIR initialization failed\");\n        return;\n    }\n\n    \/\/ Generate square wave input signal\n    for (int i = 0; i &lt; SIGNAL_LENGTH; i++) {\n        input_signal[i] = (i % 20 &lt; 10) ? 1.0f : -1.0f;\n    }\n\n    \/\/ Apply FIR filter\n    for (int i = 0; i &lt; SIGNAL_LENGTH; i++) {\n        output_signal[i] = dsps_fir_process_f32(&amp;fir, input_signal[i]);\n        ESP_LOGD(TAG, \"Input: %.2f\\tOutput: %.2f\", input_signal[i], output_signal[i]);\n    }\n\n    ESP_LOGI(TAG, \"Filtering completed\");\n\n    \/\/ Free FIR memory (optional)\n    dsps_fir_free_f32(&amp;fir);\n}\n<\/code><\/pre>\n\n\n\n<p><strong>\u7a0b\u5f0f\u8aaa\u660e<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b9a\u7fa9\u6ffe\u6ce2\u5668\u53c3\u6578\u8207\u7de9\u885d\u5340<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>#define FILTER_TAP_NUM 32\n#define SIGNAL_LENGTH 128<\/code><\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>FILTER_TAP_NUM<\/code>\uff1a\u6ffe\u6ce2\u5668\u968e\u6578\uff08Taps\uff09\uff0c\u5373\u4f7f\u7528\u7684\u4fc2\u6578\u6578\u91cf\u3002<\/li>\n\n\n\n<li><code>SIGNAL_LENGTH<\/code>\uff1a\u6a21\u64ec\u8a0a\u865f\u9577\u5ea6\uff0c\u9019\u88e1\u662f 128 \u7b46\u8cc7\u6599\u9ede\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u521d\u59cb\u5316 FIR \u6ffe\u6ce2\u5668<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>dsps_fir_init_f32(&amp;fir, filter_coeffs, delay_line, FILTER_TAP_NUM);<\/code><\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4f7f\u7528 <code>ESP-DSP<\/code> \u63d0\u4f9b\u7684\u51fd\u6578\u521d\u59cb\u5316 <code>fir<\/code> \u6ffe\u6ce2\u5668\u7d50\u69cb\u3002<\/li>\n\n\n\n<li><code>filter_coeffs<\/code> \u662f\u8a2d\u8a08\u597d\u7684\u4f4e\u901a\u6ffe\u6ce2\u5668\u4fc2\u6578\uff08\u6b64\u4f8b\u70ba\u5747\u503c\u6ffe\u6ce2\u5668\uff09\u3002<\/li>\n\n\n\n<li><code>delay_line<\/code> \u662f\u6ffe\u6ce2\u5668\u5167\u90e8\u72c0\u614b\u7684\u5ef6\u9072\u7dda\uff0c\u9700\u7531\u4f7f\u7528\u8005\u63d0\u4f9b\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7522\u751f\u8f38\u5165\u8a0a\u865f\uff08\u65b9\u6ce2\uff09<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>input_signal[i] = (i % 20 &lt; 10) ? 1.0f : -1.0f;<\/code><\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6a21\u64ec\u4e00\u500b\u983b\u7387\u56fa\u5b9a\u7684\u65b9\u6ce2\u8a0a\u865f\uff1a\u9023\u7e8c 10 \u7b46\u70ba <code>+1.0<\/code>\uff0c\u63a5\u8457 10 \u7b46\u70ba <code>-1.0<\/code>\uff0c\u5982\u6b64\u53cd\u8986\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u57f7\u884c\u6ffe\u6ce2\u904b\u7b97<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>output_signal[i] = dsps_fir_process_f32(&amp;fir, input_signal[i]);<\/code><\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5c07\u6bcf\u7b46\u8f38\u5165\u8cc7\u6599\u9001\u5165\u6ffe\u6ce2\u5668\uff0c\u8a08\u7b97\u5c0d\u61c9\u8f38\u51fa\u3002<\/li>\n\n\n\n<li>\u7d50\u679c\u6703\u9010\u6b65\u5370\u51fa\uff1a\u300cInput\u300d\u8207\u300cOutput\u300d\uff0c\u65b9\u4fbf\u89c0\u5bdf\u6ffe\u6ce2\u6548\u679c\u3002<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>5. <strong>\u6e05\u7406\u8cc7\u6e90\uff08\u9078\u64c7\u6027\uff09<\/strong><\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\"><code>dsps_fir_free_f32(&amp;fir);<\/code><\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u96d6\u7136 ESP-DSP \u7684 FIR \u5be6\u4f5c\u901a\u5e38\u4e0d\u9700\u8981\u5927\u91cf\u8cc7\u6e90\u91cb\u653e\uff0c\u4f46\u70ba\u4e86\u826f\u597d\u7fd2\u6163\uff0c\u9019\u88e1\u4e5f\u793a\u7bc4\u91cb\u653e\u8a18\u61b6\u9ad4\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7de8\u8b6f\u548c\u71d2\u9304-1\">\u7de8\u8b6f\u548c\u71d2\u9304<\/h2>\n\n\n\n<p>\u5b8c\u6210\u7a0b\u5f0f\u78bc\u5f8c\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 <a href=\"https:\/\/www.espressif.com\/en\/products\/sdks\/esp-idf\" target=\"_blank\" rel=\"noopener\">ESP-IDF<\/a> \u63d0\u4f9b\u7684\u547d\u4ee4\u9032\u884c\u7de8\u8b6f\u3001\u71d2\u9304\u548c\u76e3\u63a7\u3002<\/p>\n\n\n\n<p>\u5728 VS Code \u7684\u5de6\u4e0b\u89d2 ESP-IDF \u5de5\u5177\u5217\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9ede\u9078 <strong>Build project<\/strong><\/li>\n\n\n\n<li>\u9ede\u9078 <strong>Flash device<\/strong><\/li>\n\n\n\n<li>\u9ede\u9078 <strong>Monitor device<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u8f38\u51fa\u8207\u6e2c\u8a66\u7d50\u679c\">\u8f38\u51fa\u8207\u6e2c\u8a66\u7d50\u679c<\/h2>\n\n\n\n<p>\u8f38\u51fa\u6578\u503c\u6703\u96a8\u8457 FIR \u7684\u7d2f\u7a4d\u5377\u7a4d\u904b\u7b97\u800c\u9010\u6f38\u300c\u4e0a\u5347\u5e73\u6ed1\u300d\u3001\u300c\u4e0b\u964d\u5e73\u6ed1\u300d\uff0c\u9019\u662f\u5178\u578b\u4f4e\u901a\u6ffe\u6ce2\u5668\u8655\u7406\u6548\u679c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">I (0) FIR_FILTER_EXAMPLE: ESP-DSP FIR filter example started\nD (10) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.03\nD (20) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.06\nD (30) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.09\nD (40) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.13\nD (50) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.16\n...\nD (310) FIR_FILTER_EXAMPLE: Input: -1.00\tOutput: 0.00\nD (320) FIR_FILTER_EXAMPLE: Input: -1.00\tOutput: -0.03\nD (330) FIR_FILTER_EXAMPLE: Input: -1.00\tOutput: -0.06\nD (340) FIR_FILTER_EXAMPLE: Input: -1.00\tOutput: -0.09\n...\nD (800) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.00\nD (810) FIR_FILTER_EXAMPLE: Input: 1.00\tOutput: 0.03\n...\nI (900) FIR_FILTER_EXAMPLE: Filtering completed<\/code><\/pre>\n\n\n\n<p><strong>LOG \u8aaa\u660e<\/strong> :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u4e00\u884c <code>D (...)<\/code> \u662f <code>ESP_LOGD()<\/code> \u8f38\u51fa\u7684\u9664\u932f\u8a0a\u606f\uff0c\u986f\u793a\u300c\u539f\u59cb\u8f38\u5165\u503c\u300d\u8207\u300c\u6ffe\u6ce2\u5f8c\u8f38\u51fa\u503c\u300d\u3002<\/li>\n\n\n\n<li>\u8f38\u51fa\u6578\u503c\u6703\u96a8\u8457 FIR \u7684\u7d2f\u7a4d\u5377\u7a4d\u904b\u7b97\u800c\u9010\u6f38\u300c\u4e0a\u5347\u5e73\u6ed1\u300d\u3001\u300c\u4e0b\u964d\u5e73\u6ed1\u300d\uff0c\u9019\u662f\u5178\u578b\u4f4e\u901a\u6ffe\u6ce2\u5668\u8655\u7406\u6548\u679c\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"\u7d50\u8ad6\">\u7d50\u8ad6<\/h2>\n\n\n\n<p>\u6211\u5011\u5c55\u793a\u4e86\u5982\u4f55\u904b\u7528 Espressif \u7684 ESP-DSP \u51fd\u5f0f\u5eab\uff0c\u5728 ESP32 \u4e0a\u5feb\u901f\u5be6\u4f5c\u4e00\u500b\u9ad8\u6548\u4e14\u7a69\u5b9a\u7684 FIR \u6ffe\u6ce2\u5668\u3002\u900f\u904e\u7c21\u55ae\u7684\u521d\u59cb\u5316\u8207\u9010\u9ede\u8655\u7406\u6d41\u7a0b\uff0c\u5373\u53ef\u91dd\u5c0d\u8f38\u5165\u8a0a\u865f\u9032\u884c\u5373\u6642\u6ffe\u6ce2\uff0c\u5be6\u73fe\u5982\u4f4e\u901a\u3001\u5e73\u6ed1\u3001\u964d\u96dc\u8a0a\u7b49\u6548\u679c\u3002\u900f\u904e\u6a21\u64ec\u7684\u65b9\u6ce2\u8f38\u5165\uff0c\u6211\u5011\u6e05\u695a\u89c0\u5bdf\u5230 FIR \u6ffe\u6ce2\u5668\u7684\u5e73\u6ed1\u4f5c\u7528\uff0c\u6709\u6548\u53bb\u9664\u5c16\u92b3\u8b8a\u5316\u8207\u9ad8\u983b\u6210\u5206\uff0c\u5c55\u73fe\u5176\u5728\u7dda\u6027\u7cfb\u7d71\u4e2d\u7684\u7a69\u5b9a\u6027\u8207\u5be6\u7528\u6027\u3002<\/p>\n\n\n\n<p>FIR \u6ffe\u6ce2\u5668\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u97f3\u8a0a\u8655\u7406<\/li>\n\n\n\n<li>\u901a\u8a0a\u7cfb\u7d71<\/li>\n\n\n\n<li>\u5f71\u50cf\u8655\u7406<\/li>\n\n\n\n<li>\u611f\u6e2c\u5668\u6578\u64da\u8655\u7406<\/li>\n\n\n\n<li>\u5de5\u696d\u8207\u63a7\u5236\u7cfb\u7d71<\/li>\n\n\n\n<li>\u5d4c\u5165\u5f0f\u8207 IoT \u7cfb\u7d71<\/li>\n<\/ol>\n\n\n\n<p>\u900f\u904e\u9019\u500b\u5be6\u4f5c\uff0c\u6211\u5011\u4e0d\u50c5\u638c\u63e1\u4e86 FIR \u6ffe\u6ce2\u7684\u57fa\u672c\u61c9\u7528\uff0c\u4e5f\u4e86\u89e3\u5982\u4f55\u5584\u7528 ESP-DSP \u63d0\u4f9b\u7684\u8cc7\u6e90\u3002\u672a\u4f86\u4f60\u53ef\u4ee5\u5617\u8a66\u6539\u8b8a\u4fc2\u6578\u3001\u6539\u5beb\u6210\u5e36\u901a\u6ffe\u6ce2\u5668\uff0c\u751a\u81f3\u642d\u914d FFT \u5206\u6790\u505a\u66f4\u8907\u96dc\u7684\u524d\u8655\u7406\u6d41\u7a0b\u3002<\/p>\n\n\n\n<hr class=\"wp-block-separator alignwide has-text-color has-palette-color-1-color has-alpha-channel-opacity has-palette-color-1-background-color has-background is-style-wide\"\/>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ESP-DSP FIR \u6a21\u7d44 \u662f\u6578\u4f4d\u8a0a\u865f\u8655\u7406\uff08DSP\uff09\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u6ffe\u6ce2\u6838\u5fc3\u5143\u4ef6\u4e4b\u4e00\u3002FIR\uff08\u6709\u9650\u8108\u885d\u97ff\u61c9\uff0cFi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3810,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,53,83],"tags":[27,21,44,9,11],"class_list":["post-3793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-module","category-esp32","category-featured","tag-c","tag-ide","tag-programming-language","tag-python","tag-tutorial"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/3793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/comments?post=3793"}],"version-history":[{"count":19,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/3793\/revisions"}],"predecessor-version":[{"id":3829,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/posts\/3793\/revisions\/3829"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media\/3810"}],"wp:attachment":[{"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/media?parent=3793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/categories?post=3793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saludpcb.com\/zh\/wp-json\/wp\/v2\/tags?post=3793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}