| 摘要 |
PROBLEM TO BE SOLVED: To constitute an automatic equalizer only the rough a DSP(digital signal processor) without the use of a microcomputer. SOLUTION: In this automatic equalizer for controlling the gain of an equalizer based on an input signal level, a digital signal processing (21) for monitoring the peak value of input audio signals in each prescribed period, the digital signal processing (22) for successively updating an equalizer coefficient value by the peak value and the digital signal processing (23) for executing an equalizing processing to the audio signals by using the equalizer coefficient value and outputting them are respectively performed by a DSP 12. |
