Product category:
Analogue and Mixed Signal ICs
News Release from: Oki Electric | Subject: ML2871 and ML2873
Edited by the Electronicstalk Editorial
Team on 01 June 2004
Polyphonic chips sound good for Chinese
handsets
Oki Electric and Casio Computer have codeveloped a pair of new polyphonic sound generator ICs for the Chinese market.
Oki Electric and Casio Computer have codeveloped a pair of new polyphonic sound generator ICs for the Chinese market The ML2871 and ML2873 produce 16 and 32 polyphonic tones, respectively
This article was originally published on Electronicstalk on 10 Apr 2002 at 8.00am (UK)
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Oki is the first semiconductor company in Japan to develop a sound generator IC specifically for the Chinese market with a commitment to develop "e-sound" (excellent sound quality) that suits the Chinese market.
The two chips are ready to be used by the Chinese mobile phone manufacturers and also those in Europe, North America, Korea, Japan, Taiwan etc, that focus on the Chinese market.
Oki expects to sell nine million chips and hold the top market share in China by the end of the fiscal year ending March 2005.
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"To develop these new chips, we established a project team in Shanghai to conduct marketing and technical support dedicated to the Chinese market".
"This enabled Oki to respond quickly and in detail to the needs from local manufacturers as well as succeeded in creating a product that is committed to a sound that suits the Chinese market", said Hiro Matsubara, General Manager of the Speech LSI Business Unit at Oki Electric.
"We will continue to develop high value added system LSIs for the personal and mobile market by committing to e-sound, small size and low power consumption and converging semiconductor technologies with system technologies".
The GSM market holds 60% of the worldwide mobile market, in which China is the largest.
Because user needs vary and demand for new models is increased, handset manufacturers make efforts to differentiate themselves by enhancing functions and expanding their product lineup.
Oki's new ICs include 13 types of Chinese traditional instruments such as erhu, pipa and the Chinese dulcimer as a differentiating function - a first for a Japanese company.
To respond to the Chinese market requirements for louder ring tone volume, Oki also optimised the wavetable and has achieved twice the sound volume (+6dB) than that of conventional phones from a small speaker.
In addition, Oki has integrated an amplifier that can drive an 8ohm speaker for ringer tones.
Mobile phone manufacturers expanding their product lineup need to develop various products in a short period of time.
Conventionally, pin arrangement and control software have differed depending on the LSI and it has been necessary to redesign the circuit board when using a new LSI, which causes a burden for product development.
However, pin arrangement and control software are completely compatible between Oki's LSIs - an industry first for ringer tone chips.
This enables manufacturers to significantly reduce the 32 polyphonic and 16 polyphonic product lineup development times.
Oki offers both the super small W-CSP packaging, and the widely used QFN packaging, which fits various design environments.
The company also plans to expand its lineup by providing a 64 polyphonic ring tone LSI and high sound quality product for high-end handsets compatible with the ML2871 and ML2873.
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