The invention relates to the field of
intelligent control, and in particular to an intelligent conference
system based on
Bluetooth. The
system is provided with a power
amplifier circuit and an arraydigital
microphone. The volume of the sound output by the
loudspeaker is controlled by the power. The main purpose of the power
amplifier circuit is to output a high-power
signal. Therefore, the poweramplifier circuit is matched with the
loudspeaker to solve the problem that the
mobile phone loudspeaker is small in sound and cannot hear the sound of the opposite side clearly. Meanwhile, the arraydigital
microphone is composed of a plurality of MEMS digital microphones which are arranged in an array mode, the 360-degree omnidirectional
audio signal acquisition range is achieved, the sound source acquisition range is wide, and the problem that the
microphone needs to be close to the microphone due to the fact that the
pickup range of the microphone is small is solved. The
system comprisesa DSP audio optimization circuit. The DSP audio optimization circuit has the effect of optimizing audio signals and can effectively eliminate echoes and
environmental noise, that is, high
noise and
background noise are filtered out from an
audio signal source, so that the call quality is remarkably improved, and meanwhile, the problem that
environmental noise interference cannot be effectively suppressed during a call is solved.