
Voice/audio processing IP lifts performance in mobile/home applications
The HiFi 3z DSP IP core for system-on-chip (SoC) designs is targeted for the latest mobile and home entertainment applications, including smartphones, augmented reality (AR)/3D goggles, digital TVs and set-top boxes (STBs).
Higher voice sample rates require more complex voice pre-processing. Enhanced Voice Services (EVS), the latest mobile voice codec supporting voice over LTE (VoLTE), supports up to a 48 kHz sample rate, compared to 16 kHz for the previous AMR-WB codec. The HiFi 3z DSP delivers more than 1.3X better performance for EVS than the HiFi 3 DSP core. Home entertainment is driving a similar workload increase as audio codecs such as Dolby AC-4 and MPEG-H transition from channel-based to object-based. In addition, audio post-processing functions such as Waves Nx 3D/AR audio and the immersive audio of Dolby Atmos-enabled TVs are driving higher complexity signal processing. The HiFi 3z DSP provides more than 1.4X better performance on Dolby Atmos-enabled TVs than the HiFi 3 DSP. Waves algorithms, te company adds, running on the HiFi 3z DSP are 20% more efficient.
The HiFi 3z DSP offers a number of architecture and instruction set architecture (ISA) improvements over the earlier HiFi 3 DSP, including:
– Dual load/store
– Advanced FLIX bundling (multiple-base ISA operations per cycle)
– Double the MACs for 16 x 16 (octal MAC)
– Enhanced ISA for accelerating FFTs, FIRs and IIRs
– New instruction extensions to improve codec (especially EVS) performance for mobile
– 4-way, 8-bit load for improved voice trigger performance
– 8-way, 8-bit load for reduced neural network memory usage
Cadence; www.cadence.com/go/hifi3z
