If you want to record your voice, try some solutions below.
If you want to record both your computer sound and voice, select "(Default Output Device)" for the Speakers and "Your microphone device" for the Microphone in the Bandicam Recording settings.
If you cannot record or synchronize your microphone sound with [Method 1], select "(Default Output Device)" for the Speakers and "Disable" for the Microphone. Then, go to the Recording tab of Windows, right-click on Microphone, select Properties, check the "Listen to this device" option, and try recording again.
If you select "Disable" for the Speakers and your microphone for the Microphone, you’ll be able to record only your microphone sound without computer sound.
If you have a problem recording your voice, you can use a smartphone or mobile headset (earphones) as a microphone on your PC instead.
To record computer and microphone sound in Windows XP, select "Primary Sound Capture Driver" as the Primary Sound Device and "Microphone" as the Secondary Sound Device. Then, check the “Two Sound Mixing” option in Bandicam.
1. Right-click on the Speaker icon in the system tray -> Open Volume control -> Click Properties.
2. After selecting the correct device in "Mixer Device," select the "Recording" option, check the "Microphone" option, and
set the microphone volume to around 70-80%. If the microphone volume is set to [Mute], change it to "Unchecked."
3. If you still have a problem with the microphone recording, select the "Playback" option, check the "Microphone" option, and check the "Select" checkbox (or uncheck the "Mute" checkbox) in the Microphone tab.
A problem may occur if you use a Bluetooth device as both [Speaker] and [Microphone] at the same time. We recommend you select another sound device for [Speaker] and select a Bluetooth device only for [Microphone]. If you still have problems, please use a USB microphone/headset, or use your smartphone as a microphone.
If Bandicam crashes when trying to record a built-in internal microphone in your laptop, go to the Recording tab of Windows, right-click on Microphone, select Properties,
check "Listen to this device," and try recording again.
If you are still having problems, please use a USB microphone/headset, or use your smartphone as a microphone.
If the above method does not solve the problem, please record your Bandicam and Windows sound settings, and send the video file with your microphone model to bandicam@bandicam.com.