Tensilica introduced the HiFi 3 audio/voice digital signal processor intellectual property core for system-on-chip design. HiFi 3 DSP has an 80% increase in performance for the FFT (fast Fourier transform), FIR (finite impulse response), and IIR (infinite impulse response) math functions that are essential in audio pre- and post-processing. In addition, there’s a performance improvement of over 150% for most voice codecs compared to HiFi EP. The HiFi 3 has been delivered to lead customers. General availability will be in March.
HiFi 3 audio/voice DSP IP core features higher performance with lower power for audio post-processing and voice processing algorithms used in smartphone and home entertainment systems. The core expands Tensilica’s HiFi architecture to quad 24/32-bits.
The HiFi 3 audio/voice DSP is upwards software compatible with the proven HiFi 2 and HiFi EP audio/voice DSPs. As a result, the entire existing library of over 90 HiFi-optimized audio and voice codecs, and audio enhancement software packages will run on HiFi 3 cores with improved performance. In addition, Tensilica has further optimized the most demanding multi-channel audio software packages to run even more efficiently on the HiFi 3. HiFi 3 carries over the assets of HiFi 2 to enable easy programmability for companies wanting to port their own proprietary audio software package.
The HiFi 3 audio/voice DSP is a 3-way VLIW style DSP based on Tensilica’s Xtensa Dataplane Processor (DPU) architecture with four MACs (multiply accumulate units), a 64-bit load/store unit, and a unified 16-entry 64-bit audio register file. For speech, the IP features direct support for common ITU operations enabling greater than 50 percent performance improvement on many voice codecs, with significantly reduced porting effort.
More info: Tensilica HiFi 3 Audio DSP