| 摘要 |
PURPOSE:To enable the optimum setting without requiring a troublesome setting operation by providing a equalizer control part receiving a signal corresponding to a check sound and varying the equalizer characteristic. CONSTITUTION:Plural inspecting sounds are received by a microphone part 6 incorporated in a remote controller 2, and a level discrimination part 15 discriminates the level of the signal of each frequency successively. In the case of necessitating some level correction, a remote control part 10 sends a level correction signal through an outgoing part 7 to a reception part 8 of a main body part 1 to be corrected by an equalizer part 13. In short, the frequency characteristic received by the microphone part 6 drops, for example, by 10dB in 100Hz and in 10kHz, a control part 11 raises the levels 100Hz and 10kHz of the equalizer part 13 by 10dB using a correction signal from the outgoing part 7. The control part 11 generates a signal from a check sound generation part 12, the sound with the prescribed frequency characteristic is discharged from a speaker 9 through an amplifier part 14, correcting the frequency characteristic. |
