The invention discloses a
noise suppression method for a voice application
system of a front-end device. The
noise suppression method is applied to the front-end device connected to a sound
output device and comprises the steps that: a sound
input device collects ambient sound, the front-end device obtains the sound strength of the ambient sound according to the collected ambient sound as an ambient
noise threshold and store the same; the sound strength of real-time input sound is compared with that of the ambient
noise threshold; when the input sound strength is smaller than the ambient
noise threshold and the duration reaches a preset duration, the connection with the sound
output device is disconnected; and when the input sound strength is larger than the ambient
noise threshold, the connection with the sound
output device is connected. The invention further discloses an apparatus and a
system corresponding to the method, the entire voice opening and closing process of the
noise suppression method disclosed by the invention is automatically controlled by IPC without user intervention; and a
sound box can have good antijamming capability in various external environments, and inputs no noise in a standby state.