OKI Unveils Speaker Amplifier LSI Samples for Portable Devices

(Product News, 30 Aug 2007)

Oki Electric Industry Co. Ltd has unveiled samples of a speaker amplifier LSI that are best used in small and thin portable devices. The ML2620 adopts OKI's proprietary signal processing technology, and with speakers a mere 10mm to 20mm in diameter, it can replay music with approximately twice the volume of conventional OKI models. It can also correct the volume and sound quality to optimize them for each device as it extracts the parameter for acoustic-effect characteristics. This LSI will be shipped in volume from December 2007.

"As portable devices such as mobile phones and portable TVs have limitations as to speaker size and acoustic space (the solid content of the device required for air oscillation), it has been difficult to replay music and TV broadcasts at a louder volume with rich bass tone. On the other hand, when replaying programs that require a wide range of volume, there were cases where the sound would damage the speaker when the volume got too loud," said Masahiko Morioka, President of Silicon Solutions Company at Oki Electric Industry. "Responding to these situations, OKI developed the ML2620 speaker amplifier LSI with a built-in circuit developed by OKI that makes corrections to optimize volume and sound quality even in small speakers of 10mm to 20mm diameter. OKI will continue to enhance its lineup for sound LSIs to develop and provide chips that can express rich sound in various applications."


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