PHOENIX, Ariz. – December 14, 2010 – ON Semiconductor (Nasdaq: ONNN) a premier supplier of high performance silicon solutions for energy efficient electronics today introduced BelaSigna R261. This complete system-on-chip (SoC) solution for portable consumer electronics incorporates a highly optimized digital signal processor (DSP) with an advanced dual-microphone noise reduction algorithm to improve speech intelligibility in noisy environments, while preserving voice naturalness.