OT: Toshiba chip with SPIRIT software for MP3 player design
[May 20, 2004]
SPIRIT is offering its new implementation of MP3 encoder+decoder on Toshiba TX49xx chip family.
The low-power consuming TX49xx 64-bit, MIPS-based processor is created for high-end, performance-demanding applications for consumer electronics market. Having MP3 software optimized for TX49xx, the silicon can be a solution for developing portable and car audio systems, wireless communication systems, set-top boxes, Internet appliances, MP3 PDA players, etc.
SPIRIT MP3 codec algorithm provides decoding for MPEG1, MPEG2, and their low bit rate extension MPEG 2.5 for Layer 3 streams. SPIRIT solution doesn’t require floating-point coprocessor and is ideally suited for multimedia devices combining high sound quality and low processor requirements. The codec was developed by SPIRIT together with Toshiba engineers, and highly optimized for TX49xx.
As the result of Toshiba–SPIRIT cooperation, TX49xx functionality was extended to make it more attractive for consumer electronics market.
Toshiba Electronics Europe and SPIRIT are co-promoting this solution for the audio entertainment market. SPIRIT’s experience in integration and framework development helps OEMs to deliver TX49x-based customer applications and save time-to-market.
Linux-based voice logger from ASC with SPIRIT software for data compression
SPIRIT proprietary vocoder provides near toll speech quality at low bit rate
ASC is a global provider of integrated communications recording and quality monitoring solutions for contact centers, financial institutions, public safety and government organizations, with nearly 40 years experience in the communications industry. Recording thousands of hours of speech ASC is focused on quality. Speech compression rate is one of the crucial selling points for communication loggers as well as ability to encrypt the transmitted data. Keeping high speech quality is not easy but ASC coped with that. ASC solutions were awarded the best Product of the Year for several years in a row.
When looking for a proprietary codec ensuring appropriate speech quality (speech compression < 8 kbps and quality MOS >= 3) and saving system resources for its world's first Linux-based voice logging system, ASC addressed SPIRIT.
Thinking about desired compression rate, speech quality and available processing power SPIRIT advised ASC to choose SPIRIT’s proprietary 4800 bps vocoder based on well-known CELP model and strongly optimized. This vocoder provides nearly toll speech quality (MOS about 3.7) at low computational complexity.
Since ASC works on the Linux-based voice logger they needed a decoder that runs with Linux as well as with Windows. That’s why SPIRIT’s 4800 bps vocoder was divided into DSP-based encoder and PC-based decoder. Following its strategy of product customization SPIRIT satisfied ASC request while keeping in line with ASC project time.
SPIRIT solution not only ensures desired speech quality that is extremely important for the logger but also gives flexibility to system design and ability for system upgrade without considerable efforts, which is highly useful. Say you have a running system and would like to increase its efficiency. With SPIRIT software embedded you have no need to buy a new system as you can just upgrade your current hardware. Without additional efforts, time or money, you can make your business more effective and user-friendly.
