Melody Chip for Mobile Phones with Three-Dimensional (3D) Positioning Technology
"Europe : NEC Electronics introduced the UPD9971 melody chip for mobile phones, which offers a superior three-dimensional positioning technology, sound effects, and an industry-first 128 polyphonic tones. "
"Europe : NEC Electronics introduced the UPD9971 melody chip for mobile phones, which offers a superior three-dimensional positioning technology, sound effects, and an industry-first 128 polyphonic tones. "
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