Active Noise Cancelling (ANC) continuously blocks unwanted external noise. Switch to Transparency mode when you need to hear the world around you. External-facing microphones allow the sounds of your surroundings back in for a natural listening experience
Laptop
Laptops combine many of the input/output components and capabilities of a desktop computer into a single unit, including a display screen, small speakers, a keyboard, and a pointing device (such as a touch pad or pointing stick).
Active filters
Logitech 2.4 GHz Digital Cordless for Business features frequency agility. With this technology, the Logitech mouse or keyboard that encounters any interference from another cordless device will automatically identify and switch to a more “quiet” location in the band to transmit data.
Jack or analogue cinch cables already provide the amplified sound signal. Via USB, so-called frames or data packets are transferred from the hard disk to the USB sound card and then converted and amplified in the speaker.
With a wireless security camera, the video signal—and, with some, the audio signal as well—transmits over the internet or other wireless network to a receiver that connects to your viewing and recording device.