公开(公告)号：US20040025675A1

公开(公告)日：2004-02-12

申请号：US10370328

申请日：2003-02-18

申请人： Yamaha Corporation

发明人： Hideo Miyazaki ,  Shinji Kishinaga ,  Youjiro Takabayashi

IPC分类号： G10H001/12

CPC分类号： G10H1/125 ,  G10H3/185 ,  G10H3/186 ,  G10H2250/115 ,  G10H2250/145 ,  Y10S84/09

摘要： A method is provided for designing an acoustic correction filter applicable to a stringed instrument, which is composed of a string member operable to undergo a vibration, a support member for supporting the string member, a body member responsive to the vibration transmitted through the support member for generating a natural sound and a mute attachment for muting the natural sound. The acoustic correction filter is operable when the natural sound is muted by the mute attachment for filtering a signal derived from the vibration so as to create an artificial sound instead of the muted natural sound. The method is carried out by the steps of acquiring a first sample signal from the vibration under a mute state, acquiring a second sample signal from the vibration under a free state, extracting a difference between the acquired first sample signal and the acquired second sample signal, and determining a correction characteristic of the acoustic correction filter based on the extracted difference such that the acoustic correction filter can filter the signal in accordance with the determined correction characteristic so as to create the artificial sound comparable to the natural sound.

摘要翻译： 提供了一种用于设计适用于弦乐器的声学校正滤光器的方法，所述弦乐器由可操作以进行振动的弦乐器构成，用于支撑所述弦乐器构件的支撑构件，响应于通过所述支撑构件传递的振动的主体构件 用于产生自然声音和静音附件以使自然声音静音。 声音校正滤波器可操作，当自然声音被静音附件静音时滤波来自振动的信号，以产生人造声音而不是静音的自然声音。 该方法通过以下步骤进行：从静止状态下的振动中获取第一采样信号，从空闲状态下的振动获取第二采样信号，提取所获取的第一采样信号和采集的第二采样信号之间的差 并且基于所提取的差异来确定声学校正滤波器的校正特性，使得声学校正滤波器可以根据所确定的校正特性对信号进行滤波，从而产生与自然声音相当的人造声音。