pc端html调用麦克风
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Whether you’re video conferencing with colleagues, chatting with friends, or recording content for public consumption, audio recording quality is always important. Here’s how to get a crisp, clear, audio recording and minimize background noise on a Windows PC.
无论您是与同事进行视频会议，与朋友聊天还是录制内容以供公共消费，录音质量始终至关重要。 这是在Windows PC上获得清晰，清晰的音频记录并最小化背景噪音的方法。
(Basic Tips for Clear Audio Recording)
Before you dig into software features, you should follow some basic best practices for clearer audio recording. Here are a few quick tips:
在深入研究软件功能之前，应遵循一些基本的最佳做法，以使录音更加清晰。 以下是一些快速提示：
- Wear Headphones: If your microphone is picking up noise from your speakers, put on headphones to eliminate the echo. 戴耳机：如果您的麦克风正在拾取扬声器的噪音，请戴上耳机以消除回声。
- Use a Dedicated Microphone or Headset: Many laptops have pretty low-quality built-in microphones. Sure, they work, but that’s about all that can be said for them. Try plugging a dedicated microphone or headset into your PC. 使用专用的麦克风或耳机：许多笔记本电脑都有质量很差的内置麦克风。 当然，它们可以工作，但这就是他们可以说的全部。 尝试将专用的麦克风或耳机插入PC。
- Eliminate or Move Away From Background Noise: Close windows, move away from air vents, go to less noisy rooms, close applications that are causing your laptop’s fans to whirr, move your microphone farther away from your mouth so other people can’t hear your breathing, and generally think about how you can avoid noises. Consider trading out that noisy mechanical keyboard for something quieter while on calls. Consider muting yourself on the call while you’re not speaking, too. 消除或远离背景噪音：关闭窗户，远离通风Kong，进入嘈杂的房间，关闭导致笔记本电脑风扇嗡嗡作响的应用程序，将麦克风远离嘴巴，以便其他人听不到您的声音呼吸，并通常考虑如何避免噪音。 考虑将嘈杂的机械键盘换成通话时更安静的东西。 您也可以在不讲话时考虑让自己静音。
(How to Enable Noise Reduction in Windows)
Like Windows 7 before it, Windows 10 offers some integrated microphone options that will help with microphone background noise. The exact options available will depend on the sound hardware in your PC and your manufacturer’s audio drivers.
与之前的Windows 7一样，Windows 10提供了一些集成的麦克风选项 ，可帮助消除麦克风的背景噪音。 可用的确切选项取决于PC中的声音硬件和制造商的音频驱动程序。
These options are found in the traditional Control Panel. They aren’t available in the new Settings app. To find them, open the Control Panel from the Start menu and head to Hardware and Sound > Sound.
这些选项可在传统的“控制面板”中找到。 它们在新的“设置”应用中不可用。 要找到它们，请从开始菜单中打开控制面板，然后转到硬件和声音>声音。
Click the “Recording” tab in the Sound window, select your microphone device, and click “Properties.”
单击“声音”窗口中的“录音”选项卡，选择您的麦克风设备，然后单击“属性”。
Click the “Levels” tab. If you’re dealing with background noise, try lowering the Microphone Boost option—perhaps to +10.0 dB instead of +20.dB. This makes the microphone more sensitive, which means it will have an easier time hearing you, but it will also pick up more background noises.
点击“级别”标签。 如果您要处理背景噪声，请尝试降低“麦克风增强”选项-可能降低到+10.0 dB，而不是+ 20.dB。 这使麦克风更加灵敏，这意味着它会更轻松地听到您的声音，但也会拾取更多的背景噪音。
After reducing the microphone boost option, try setting microphone volume all the way to 100. If you lower the boost setting and the microphone is quieter, increasing the volume here will make it easier for people to hear you.
减小麦克风增强选项后，尝试将麦克风音量设置为100。如果降低增强设置且麦克风较安静，则在此处增大音量将使人们更容易听到您的声音。
After changing some settings, click “Apply” and test your microphone again to see if it helped things.
更改某些设置后，单击“应用”并再次测试您的麦克风 ，看是否有帮助。
Finally, click over to the “Enhancements” tab. This tab may not be available—it depends on your PC’s audio hardware and drivers.
最后，单击“增强”选项卡。 此选项卡可能不可用-它取决于您PC的音频硬件和驱动程序。
If there’s a “Noise Suppression” or “Noise Cancellation” option, enable it. Other options here may also help reduce background noise—for example, on the PC we tested this on, there was an “Acoustic Echo Cancellation” option that would help reduce echo caused by speakers if you’re not wearing headphones.
如果有“降噪”或“降噪”选项，请启用它。 此处的其他选项也可能有助于降低背景噪音，例如，在我们测试过的PC上，有一个“声学回声消除”选项，如果您不戴耳机，可以帮助减少扬声器引起的回声。
Click “OK” to save your changes and close the window.
单击“确定”保存更改并关闭窗口。
(Use Noise-Cancelling Software or Features)
Popular communications tools are gaining increasingly sophisticated noise-canceling features that work on calls. Some software programs promise to remove background noise while recording any application on your PC. Here are some tools you can use:
流行的通信工具正在获得日益完善的可在通话中使用的降噪功能。 某些软件程序承诺会在您的PC上录制任何应用程序时消除背景噪音。 您可以使用以下一些工具：
- Google Meet: Google added noise cancellation to Google Meet on April 22, 2020. Google Meet will automatically filter out background noise. Google Meet： Google在2020年4月22日为Google Meet 添加了噪音消除功能 。GoogleMeet将自动滤除背景噪音。
- Zoom: Zoom has built-in background noise suppression that’s enabled by default. To check these options, open Zoom’s settings window from its menu, select “Audio” in the sidebar, and click the “Advanced” button. You’ll see the “Suppress Persistent Background Noise,” “Suppress Intermittent Background Noise,” and “Echo cancellation” features. These audio-processing features are all set to “Auto” by default, but you can disable them or tune them to be more or less aggressive. 缩放：缩放具有默认情况下启用的内置背景噪声抑制。 要检查这些选项，请从其菜单中打开“缩放”的设置窗口，在侧栏中选择“音频”，然后单击“高级”按钮。 您将看到“抑制持久背景噪声”，“抑制间歇背景噪声”和“回声消除”功能。 这些音频处理功能默认情况下都设置为“自动”，但是您可以禁用它们或将它们调整为更具侵略性。
- NVIDIA RTX Voice: With the NVIDIA RTX Voice application installed, you can activate a “Remove Background Noise” feature that uses machine learning and the power of an NVIDIA GPU to remove background noise from your microphone in any application on your system. According to NVIDIA, this software only works on systems with NVIDIA RTX GPUs. However, Ars Technica reports that it can work on PCs with older NVIDIA graphics hardware as well. NVIDIA RTX语音：安装了NVIDIA RTX语音应用程序后，您可以激活“消除背景噪音”功能，该功能使用机器学习和NVIDIA GPU的功能来消除系统中任何应用程序中麦克风的背景噪音。 根据NVIDIA的说法，该软件只能在装有NVIDIA RTX GPU的系统上使用。 但是， Ars Technica报告说它也可以在具有较早NVIDIA图形硬件的PC上运行。
- Discord: Discord now has a built-in noise suppression feature powers by Krisp.ai. To enable it while voice chatting, click the Noise Suppression button at the bottom left of Discord’s sidebar and activate “Noise Suppression.” Discord： Discord现在具有Krisp.ai提供的内置噪声抑制功能。 要在语音聊天时启用它，请单击Discord边栏左下方的“噪声抑制”按钮，然后激活“噪声抑制”。
Krisp.ai, available in Discord for free, also offers a software product that can enable noise cancellation in any application—like NVIDIA’s RTX Voice software, but for PCs without any. It has a free tier that offers 120 minutes of noise cancellation for free every week, but you’ll have to pay $3.33 per month after that.
Discord免费提供的Krisp.ai还提供了一种软件产品，该软件产品可以在任何应用程序中实现降噪，例如NVIDIA的RTX语音软件，但适用于不带任何PC的PC。 它有一个免费的套餐，每周免费提供120分钟的噪音消除，但之后您必须每月支付$ 3.33。
Many other video-conferencing applications have built-in noise cancellation features, too. You may be able to configure them from the application’s settings window. If you’re using an ancient video-conferencing tool that doesn’t have built-in noise cancellation, your organization may be better off switching to a modern solution that does.
许多其他视频会议应用程序也具有内置的噪声消除功能。 您可能可以从应用程序的设置窗口配置它们。 如果您使用的是没有内置噪声消除功能的古老视频会议工具 ，则您的组织最好改用具有此功能的现代解决方案。
考虑降噪麦克风 (Consider a Noise-Canceling Microphone)
If nothing else works well, you may need a better microphone. Some microphones are designed to filter out or reduce ambient noise. For example, they may have two microphones built in—a primary mic to record your voice and a secondary mic to record ambient noise. They can then filter out the ambient noise. They’re often marketed as “noise-canceling microphones.”
如果没有其他方法可以正常工作，则可能需要更好的麦克风。 某些麦克风旨在滤除或减少环境噪声。 例如，他们可能内置了两个麦克风-一个用于记录语音的主麦克风和一个用于记录环境噪声的辅助麦克风。 然后，它们可以滤除环境噪声。 它们通常被称为“降噪麦克风”。
Even if you don’t pick up a microphone designed specifically for that, a better-quality microphone may be a big improvement in audio quality over a built-in laptop microphone or an old headset you had lying around.
即使您没有选择专门为此设计的麦克风，质量更好的麦克风也可能会比内置的笔记本电脑麦克风或您随身携带的旧耳机大大改善音频质量。
翻译自: https://www.howtogeek.com/670474/how-to-reduce-microphone-background-noise-on-a-pc/
pc端html调用麦克风
