New 3.5mm Jack Interface Lets Smart Active Noise Cancellation (ANC) Headsets Run Battery-Free
ams announced the launch of a technology which enables noise-cancelling headsets with a four-pole 3.5mm jack to operate for the first time without a dedicated battery power supply. The new Accessory Communication Interface (ACI), invented by ams, uses a single wire to carry power and bidirectional data as well as digital audio signals, enabling small form factor noise cancellation headsets while offering the flexibility to include sensors, LEDs and displays.