Patent ID: 8817993
Filing Date: 2014-08-26
Classification: H03G

Abstract:
1. An audio device with a volume adjusting function, comprising: a speed sensor to sense a speed of the audio device; a first first-in-first out (FIFO) buffer unit; a second FIFO buffer unit; an audio generator to play multimedia files to generate audio signals, and store audio signals to the first FIFO buffer unit; a sound collecting unit to collect ambient sound signals and store collected sound signals to the second FIFO buffer unit; a sound processing unit to analyze audio signals in the first FIFO buffer unit and sound signals in the second FIFO buffer unit to determine a waveform of environmental noise signals, and further determine a sound pressure level (SPL) of the environmental noise signals according to the waveform of environmental noise signals; and a volume controller to compare the determined SPL with a preset SPL, if the determined SPL is greater than the preset SPL, compare the speed sensed by the speed sensor with a preset speed, and increase the volume of audio signals to a first value if the sensed speed is greater than the preset speed, and decrease the volume of audio signals to a second value if the sensed speed is less than the preset speed.