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change hat page name
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- <a href="https://m5stack.com/"><img src="https://docs.m5stack.com/assets/img/favicon.ico" width=16px/>M5Stack</a>
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- [Github](https://github.com/m5stack)
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- [@M5Stack](http://twitter.com/M5Stack)
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- [@M5Stack](https://www.facebook.com/M5Stack)
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<!-- <a href="#/en/?id=gps-1">test</a> -->
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- [@M5Stack](https://www.facebook.com/M5Stack)
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## 描述
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**Hat SPK**是一款兼容M5SticKC的扬声器,内置PAM8303功放IC(3W单通道D类音频功率放大器),高PSRR和差分输入消除了噪声和射频的干扰,因此能够高质量低失真的还原音频信号.
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**Hat SPK**
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## 产品特性
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- 超低EMI干扰,在300MHz处比FCC B类标准好20dB
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- 5V电源电压下,带4Ω负载输出功率3W,总谐波失真10%
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- 无输入时超低噪声
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- 电源电压2.8V~5.5V
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- 短路保护
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## 包含
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# Unit PIR {docsify-ignore-all}
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# Hat PIR {docsify-ignore-all}
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<img src="assets\img\product_pics\hat\pir_hat\pir_hat_01.jpg" width="30%" height="30%"><img src="assets\img\product_pics\hat\pir_hat\pir_hat_02.jpg" width="30%" height="30%"><img src="assets\img\product_pics\hat\pir_hat\pir_hat_03.jpg" width="30%" height="30%">
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# Unit PIR {docsify-ignore-all}
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# Hat SPK {docsify-ignore-all}
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<img src="assets\img\product_pics\hat\spk_hat\spk_hat_01.jpg" width="30%" height="30%"><img src="assets\img\product_pics\hat\spk_hat\spk_hat_02.jpg" width="30%" height="30%"><img src="assets\img\product_pics\hat\spk_hat\spk_hat_03.jpg" width="30%" height="30%">
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**[4. Hello World](#Hello-World)**
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**[5. 编辑与运行文件](#开始编程)**
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**[5. 编辑与运行文件](#编辑与运行文件)**
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**[6. 程序库](#开始编程)**
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**[6. 程序库](#程序库)**
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