Usage of IP technologies to reduce noise levels in audio and recording cabins

摘要

Nowadays, audio channels in musical concerts (as well as in cabins as in live concerts) start from analogical audio signals generated at microphones, continue with signal transmission to a central audio mixer through wire connections (a wire for each microphone) and end at its digital processing and posterior reproduction through audio system speakers. Algorithm proposed by the authors suggests the signal digitalization directly at microphones and the introduction of virtual audio mixers, which simplifies audio channels management, and reproduces equalization and volume control functions from physical ones, adding control mechanisms over output channels. Noise and attenuation levels are measured and compared with traditional systems, to demonstrate the advantages of using the proposed algorithm.