| 摘要 |
PURPOSE: A vehicle audio system for performing virtual engine sound outputting functions is provided to reduce the number of components and reduce manufacturing processes by integrating individual modules for processing each sound source. CONSTITUTION: A microphone(1) inputs handsfree voice and engine noise. A DSP(Digital Signal Processing) amplifier processes handsfree voice which is inputted from the microphone. The DSP outputs the processed voice to a main speaker(3). The DSP amplifier removes an engine noise which is inputted from the microphone. The DSP outputs the virtual engine noise to a main speaker. |
