: More advanced devices use ultrasonic frequencies (above 20kHz) to disrupt nearby recording microphones without affecting human hearing. Comparison of Blocking Methods
A microphone blocker is a hardware or software tool designed to prevent unauthorized audio recording or eavesdropping on digital devices. Physical blockers, often referred to as "mic locks," typically function by plugging into a device’s audio port to trick the system into thinking an external microphone is active, thereby disabling the internal one. Microphone Blocker
: These are applications or system settings that revoke microphone permissions for other apps. They act as a digital gatekeeper, effectively "muting" the microphone at the software level to prevent it from being activated by malware or background processes. : More advanced devices use ultrasonic frequencies (above