| 主权项 |
1. A machine for automatically enabling and disabling noise reduction feature of a communication device of a communication system, the machine comprising:
at least one receiver adapted to receive an input audio signal from the communication device; a memory adapted to store program instructions; a noise reduction module adapted to process the input audio signal to reduce disturbance due to background noise to transmit a clear audio signal; a micro-processor adapted to be functionally coupled to the memory to process the program instructions stored in the memory, the micro-processor having,
a setting module adapted to set a threshold value, the threshold value adapted to be set at beginning of conversation, while conversation using the communication device and while production of the communication device,a calculating module adapted to cyclically calculate a Root Mean Square (RMS) value of the input audio signal received from the communication device,a comparator module adapted to compare the threshold value and the RMS value to obtain a single decision value, anda decision module adapted to store in the memory, a single decision value corresponding to either enabling or disabling the noise reduction module, the decision value corresponds to disabling the noise reduction module if the RMS value is less than the threshold value, and the decision value corresponds to enabling the noise reduction module if the RMS value is greater than the threshold value; and a control module functionally coupled to the micro-processor and the noise reduction module to enable or disable the noise reduction module based on the decision value. |
