Krisp Microphone and Krisp Speaker are virtual devices. They are created on your computer when you install Krisp on it. They do not operate with other virtual microphones. When setting up Krisp, ensure that you select a genuine, physical device within the Krisp app for optimal performance.
To understand why Krisp can't work with virtual microphones, check out this article.
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A virtual device refers to a device file that has no associated hardware. It mimics a physical hardware device when, in fact, it exists only in software form. Therefore, it makes the system believe that particular hardware exists when it really does not.Krisp creates an additional layer between the physical microphone/speaker and the communication app you are using. To remove the noise coming from other participants to you, the audio is received from the communication app. It is processed on your device to remove noise by Krisp Speaker and then transmitted to your physical speakers.
To remove the noise going from you to other participants, the audio is received from your physical microphone. It is processed on your device to remove noise by Krisp Microphone and then transmitted to the communication app.
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Check this article to see what types of noises Krisp removes.With Background Voice Cancellation, you can cancel other people's voices during your calls.