Turn on the microphone listening function diagram under Win7

When we used Windows XP system, would we find some computers echoing into the microphone? That is because we opened the "microphone" in the sound settings. Option, I used to use this function as a way to determine whether a microphone is good or bad. I don't know if you have tried it.
But in the win7 version, if we want to use this method to judge whether the microphone is good or bad, we will find that we can't find the microphone in the sound, and we can't find the place where we can tick, so how can we open this? What about the function?
First of all, we can look at this function in fact, it should be called "Device Listening", we can right click the "Trumpet" icon in the lower right corner of the screen, click on the recording device; double click to open the listed Microphone, we can see a snooping tag, select the listening device (we choose the microphone) in this performance, and also choose to set the device to play through the specified device;
Operation steps:
Right click on the right In the lower corner of the small speaker icon, click <;sound";

click the <;record” tab, click the "microphone" icon, click “properties";
< Br> Click the <;listen” tab, check “listen to this device”, apply.

In addition, the level label here can also adjust the volume of the microphone. After the operation is finished, you can start to listen after you save it. You can turn it off and cancel the interception.