Patent ID: 9514765
Filing Date: 2016-12-06
CPC Classification: G10L

Claim Text:
1. A method for reducing noise, applied in a voice electronic device, the voice electronic device receiving an input voice, and the method comprising: dividing the input voice into a plurality of voice segments; obtaining a maximum energy reference value of a current voice segment; and adjusting the energy of the current voice segment according to a current reference ratio, wherein the current reference ratio is calculated according to the maximum energy reference value and a predetermined energy value, and the current reference ratio is less than or equal to 1 and greater than or equal to 0, wherein the maximum energy reference value is determined according to the maximum energy from n voice segments prior to the current voice segment, where n is between 0 and 180, and if n is 0, the maximum energy reference value is the maximum energy of the current voice segment, wherein the current reference ratio is calculated further according to a previous reference ratio, where the previous reference ratio is an energy used for adjusting a previous voice segment, the previous reference ratio is less than or equal to 1 and greater than or equal to 0, and the previous voice segment is one voice segment ahead of the current voice segment, and wherein the current reference ratio is calculated further according to a constraint coefficient, and if the current reference ratio is greater than the previous reference ratio, the constraint coefficient is between 0.01 and 1.