Specification Under Development Will Enable LC3plus High-Resolution Codec in Bluetooth LE Audio

The Bluetooth LE Audio set of specifications, introducing the LC3 codec as the mandatory option for wireless audio streaming, is an important evolution compared to the current default SBC codec. Nevertheless, unlike the current Bluetooth Classic A2DP profile that specifies optional audio codecs, LE Audio didn't offer any options. A recent article in the Fraunhofer IIS blog confirms that a new specification is under development to allow support for the LC3plus high-resolution audio codec.

As anticipated, Asahi Kasei Microdevices Corporation (AKM) has released to production the new flagship stereo D/A converter (DAC), the Velvet Sound Verita AK4499EX, showcased at the High End Munich show in May 2022. Alongside the AK4499EX, AKM has also released the AK4191 Digital Filter and ΔΣ Modulator, completing a two-chip solution that makes it easy to improve performance with completely independent digital and analog circuitry.

A new Preferred Listening Response Curve that could define the next standard in high-resolution earphones, was the result from a new research by Knowles Corporation. The research is intended to guide product designers, and reflects the findings of an internal effort by the balanced armature manufacturer to determine the best and most satisfying music listening experience for consumers. In the research report, Knowles proposes an evolution of the Harman response curve specific to in-ears that takes into consideration frequencies above 10kHz

Microchip announced a fully-certified, Bluetooth 5-compliant System-on-Chip (SoC) with Sony’s LDAC audio codec, extending availability of the high-resolution audio technology into mass market Bluetooth wireless products. Headphone manufacturer Audeze already implemented the new IS2064GM-0L3 SoC in its award-winning Mobius gaming headphones to create the best possible immersive Bluetooth audio experience today’s consumers demand.