公开(公告)号：US20130070929A1

公开(公告)日：2013-03-21

申请号：US13675009

申请日：2012-11-13

Applicant: PANASONIC CORPORATION

Inventor： Shinobu ADACHI ,  Yumiko KATO ,  Koji MORIKAWA ,  Jun OZAWA ,  Hiroshi NITTONO

IPC: H04R29/00

CPC classification number: H04R29/001 ,  A61B5/04845 ,  A61B5/125 ,  A61B5/6814

Abstract: A sound pressure assessment system determines sounds to be presented by referring to a database retaining data of sounds, each of which is a pure tone. The system presents the determined sound as a first sound, and in a predetermined time after presenting the first sound, presents as a second sound a sound at least having the same frequency and the same sound pressure level as those of the'first sound to the user. The system extracts an amount of change from an N1 component in response to the first sound to that in response to the second sound. The N1 components are negative components of an user's event-related potential based on points of presenting the first and second sounds as respective starting points. The system determines whether the sound pressure level of the presented sound is excessive to the user, based on the amount of change.

Abstract translation: 声压评估系统通过参考保存声音数据的数据来确定要呈现的声音，每个声音都是纯音。 该系统将确定的声音呈现为第一声音，并且在呈现第一声音之后的预定时间中，呈现至少具有与“第一声音”相同的频率和相同声压级的声音作为第二声音 用户。 该系统响应于第一个声音从N1分量中提取一个变化量，以响应于第二个声音。 N1分量是基于将第一和第二声音作为相应起点的点的用户事件相关电位的负分量。 基于变化量，系统确定呈现的声音的声压级是否过大。