SoC Design of Self-Diagnosing Speaker Connection System
Moon-Vin Song, Oh-Kyun Kwon, The-Hoon Song, Yunmo Chung · The Journal of the Acoustical Society of Korea · 2007
Pervasive Multi-channel audio systems are being realized due to advances in digital technology. This paper proposes an efficient system that serially connects individual speakers with bidirectional digital communication capability by means of SoC design. In particular, each speaker can identify the bit stream assigned to the speaker and convert it into analog audio. Furthermore, the speaker can self-diagnose the speaker functionality by utilizing the designed capability to measure frequencies of various square wave test signals. The proposed system running on 200MHz clock yielded restoration of analog output signal with latency of only compared to directly driving the speakers in a traditional way.