Patent ID: 9178481
Filing Date: 2015-11-03
Classification: H03G

Abstract:
1. A volume control method applied to an audio processing system, the method comprising: receiving a digital audio stream from a transmitter, the digital audio stream comprising a plurality of digital audio packets; determining whether an excitation signal is detected; sampling the digital audio packets within a sampled period according to codecing rules, on condition that the excitation signal is detected; retrieving output values corresponding to the digital audio packets from the sampled digital audio packets according to the sampling operation, wherein each of the output values corresponds to any one of a predetermined plurality of volume levels; analyzing the digital audio packets to generate sums of sampled frequency, wherein each of the sums of sampled frequency corresponds to one volume level of the plurality of volume levels; calculating an averaged volume level according to the sums of sampled frequency; generating an audio shift value according to the averaged volume level and a predetermined standard volume level; and implementing volume control to subsequently received digital audio packets from the digital audio stream according to the audio shift value.