Microfono del PC che fischia

Nel programma aggiungo una traccia e all’improvviso le casse del computer fischiano,premetto che non ho una scheda audio attaccata,come faccio a risolvere il problema?

The most likely reason is that the internal (hardware) mixer for your audio interface (“soundcard”) is configured in a way that creates a feedback loop. The most common problem is that it is set up to record/capture the output of the card. To fix this you need to use a system-wide hardware mixer application, or the “utility” aka “control” application for your audio interface to change the settings.