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The paper describes developed conference system based on the interaction between personal user mobile devices and administrator's PC. This system can be used instead of expensive, sophisticated equipment for conferences with the appropriate quality of audio signal. Analysis of different approaches and technics and final algorithms are presented. Phase modulation, gain reduction, spatial filtering, room modeling methods, and particularly AGC, AEQ, notch howling suppression, pitch shifting were taken as the basic elements of signal processing procedures. Practical realization of the final system is described as well. Main part of the tuning goes in automatic mode but there is a fine-tuning possibility for the users in the manual mode

Control Approaches for Audio Signal Quality Improvement in the Developed Conference System Based on the Personal User Devices