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Augmented Hearing – Digital ANC

Digital ANC - Augmented Hearing

ams Digital Augmented Hearing Solutions enable a new era of audio devices in wireless and true wireless earbud designs. The Digital ANC device supports ‘Hear what you want to hear’ functionality for loose fit earbuds. It tunes out ambient noise through market leading Active Noise Cancellation (ANC) performance >40dB and simultaneous tunes in speech and music with natural and boosted transparency modes.
The technology supports all 3 types of ANC topologies (feed-forward, feed-back and hybrid) as well as ams unique Automatic Leakage Compensation (ALC) for loose fit earbuds. ALC end users’ benefit from an optimized and stable ANC performance no matter how tightly or loosely the earbud fits into the user’s ear.
The technology also supports “Automatic Preset Selection” (APS), which automatically adapts the ANC performance to different ambient noise environments.

Analog ANC

Analog ANC

Analog Active Noise Cancellation (ANC) can be implemented in wired On, Over and In-Ear Headphones as well as wireless and true wireless earbuds. ANC improves the quality of music listening and phone conversations by reducing the volume of background ambient noise.

The ams analog ANC chips offer:

  • ultra-low power consumption,
  • best-in-class noise-reduction performance,
  • the smallest board footprint.
     

Extensive system know-how ensures that customers manage effectively the acoustic, mechanical and electrical aspects of their headset designs.

IR Proximity Module for In-Ear Detection

IR Proximity Module for In-Ear Detection

ams’ TMD2635 digital infrared proximity module is the world’s smallest complete optical sensor occupying a cubic space volume of just 1mm3 and can be used to enable wireless earbud in-and-out of ear detection.

Its power-saving benefits with the small battery capacity and size of a true-wireless earbud products helps extends battery life and thus longer listening periods by detecting when an earbud is not in a user’s ear because it consumes an average active-mode current consumption of 70µA and 0.7µA in sleep mode.

When used in tandem with another TMD2635 to enable elementary touchless gesture control without the need for buttons. Split near-far field photodiode offset emitter to detector positioning provides the freedom to optimize both the size and shape of the needed sensor apertures in an earbud industrial design and optimize the product for comfort and performance – either a 1.5mm circular or a 1x2mm oval aperture.

Power and communication interface

Power and communication interface - POW:COM

ams POW:COM power and communication interface products enable simultaneous accessory charging and communication for wireless and true wireless earbuds. Requiring just two pins per device, POW:COM increases design flexibility and helps improve the reliability of charging operations. The additional communication capabilities provided by this interface also enhance the experience of using earbuds equipped with ams POW:COM Solutions.