Development of active acoustic noise cancellation using the professional audio development kit (PADK) featuring the TMS 320C6727 DSP

Abstract

The PADK is a highly versatile DSP platform for implementing real-time audio applications. It features the Texas Instruments TMS320C6727, a powerful floating-point DSP processor and can process audio from eight input channels simultaneously. This makes it an ideal platform for developing multi-channel active acoustic noise control algorithms. This paper demonstrates results of system identification and feedback control using this kit. Using the Least Mean Square (LMS) algorithm, the filter coefficients are updated in real time to obtain an accurate impulse response. Potential applications of this particular platform are in the implementations of active acoustic noise control (ANC) systems in real time.