The application relates to the technical field of voice
processing, in particular to a voice enhancement method and
system of a
loudspeaker. The method comprises the following steps: acquiring a sound
signal, performing frame
processing, extracting multi-dimensional voice features, presetting a
classification rule, outputting a human voice confidence, generating human voice existence information; acquiring a
loudspeaker reference
signal, performing acoustic echo cancellation
processing to obtain an echo cancellation output
signal, and adjusting an adaptive update strategy according to the human voice confidence when human voice exists, namely, freezing
adaptive filter coefficient update and / or reducing the update strength of the
adaptive filter; identifying a main
noise frequency band of fluctuant
noise, performing
noise suppression processing to obtain a
noise suppression output signal; acquiring state information, adjusting update parameters and / or suppression strength, and outputting a voice-enhanced
loudspeaker signal. The method solves the problem that an existing loudspeaker
system is difficult to effectively adapt to
background noise and echo influence in a complex acoustic environment, thereby causing the intelligibility of voice to decrease.