原创 First MP3 Decoder Under 6 MHz

It is really a so great news!!!!

Our company has optimized the MP3 Decoder for our Xtensa HiFi 2 Audio Engine, and now it runs at 5.7 MHz – the first decoder to run under 6 MHz in the industry.

This makes Tensilica’s Xtensa HiFi 2 Audio Engine ideal for adding MP3 playback to cellular phones, where current carrier requirements are for 100 hours of playback time on a battery charge, and increasing to 200 hours in the near future.

This 5.7 MHz requirement includes the entire MP3 decode functionality, including MPEG container parsing and variable length decoding (VLD, also known as Huffman decoding). Some competing offerings are merely accelerator blocks that exclude portions of the complex control code in MP3 such as VLD, and thus rely on a processor to perform VLD decoding. Tensilica’s 5.7 MHz figure is all inclusive.

Any good designer can get MP3 freeware off the Internet and run it on most processors, but they will find that it requires the processor to run at high MHz and, thus, is power inefficient. By carefully optimizing our software, we were able to get better results than we’ve seen from any published competitive performance specifications.