NEC Introduces Melody Chip for Mobile Phones with 3D Positioning Technology

Mar 30, 2005

NEC Electronics today introduced the µPD9971 melody chip for mobile phones, which offers a superior three-dimensional positioning technology, sound effects, and an industry-first 128 polyphonic tones. The combination of features helps mobile phone manufacturers deliver dynamic sound quality and realism for feature-rich applications such as games.

The latest addition to NEC Electronics' lineup of melody chips achieves state-of-the-art surround sound with the inclusion of FueTrek's three-dimensional (3D) positioning technology, which processes sound so that it seems to come from four different positions, from just two speakers on the mobile phone. In addition to this positioning technology, the µPD9971 melody chip includes 128 polyphonic tones – twice as many as are available in the most advanced melody chips today – encouraging the development of even richer sound content.

Seven on-chip audio effects (pitch bend, vibrato, delay, reverb, chorus, compression and Doppler effect) bring sound qualities previously unavailable to mobile phones. The combination of these advanced features enables new possibilities in sound-based applications. For example, users would be able to hear a car realistically "zooming" from the right side to the left side of the screen.

The chip is also compatible with the Mobile Extensible Music Format (Mobile XMF) as well as Standard MIDI Files (SMF). Compatibility with these industry standard audio formats facilitates software and application development, allowing audio files created on personal computers to be used in mobile phones, without the need to re-create or significantly modify the files.

As mobile phones increase in complexity, applications that rely on sound such as games, downloadable ring tones, and videoconferencing are becoming increasingly feature-rich as well. With the µPD9971 and future additions to the company's lineup of melody chips for mobile phones, NEC Electronics aims to meet the needs of today's mobile phone designers and facilitate the evolution of audio applications and content.

Explore further: Under some LED bulbs whites aren't 'whiter than white'

add to favorites email to friend print save as pdf

Related Stories

Review: Price for simplicity in new Google phones

Jul 02, 2013

Two new Android phones will look and sound familiar to those who have been paying attention to phones. That's because these two devices are replicas of Samsung's Galaxy S4 and HTC's One, except they lack ...

Musicians take note of tune-writing app

May 06, 2013

Need some instant musical notation to remember that little tune you just came up with? A new mobile app created by a researcher from KTH Royal Institute of Technology makes it possible to score any melody ...

Recommended for you

Under some LED bulbs whites aren't 'whiter than white'

1 hour ago

For years, companies have been adding whiteners to laundry detergent, paints, plastics, paper and fabrics to make whites look "whiter than white," but now, with a switch away from incandescent and fluorescent lighting, different ...

A robot dives into search for Malaysian Airlines flight

2 hours ago

In the hunt for signs of Malaysian Airlines flight MH370—which disappeared on March 8 after deviating for unknown reasons from its scheduled flight path—all eyes today turn to a company that got its start ...

User comments : 0

More news stories

Under some LED bulbs whites aren't 'whiter than white'

For years, companies have been adding whiteners to laundry detergent, paints, plastics, paper and fabrics to make whites look "whiter than white," but now, with a switch away from incandescent and fluorescent lighting, different ...

Researchers uncover likely creator of Bitcoin

The primary author of the celebrated Bitcoin paper, and therefore probable creator of Bitcoin, is most likely Nick Szabo, a blogger and former George Washington University law professor, according to students ...

Continents may be a key feature of Super-Earths

Huge Earth-like planets that have both continents and oceans may be better at harboring extraterrestrial life than those that are water-only worlds. A new study gives hope for the possibility that many super-Earth ...

Researchers successfully clone adult human stem cells

(Phys.org) —An international team of researchers, led by Robert Lanza, of Advanced Cell Technology, has announced that they have performed the first successful cloning of adult human skin cells into stem ...