Title:
ACOUSTIC SIGNAL DISPLAY DEVICE
Document Type and Number:
Japanese Patent JPH0552643
Kind Code:
A
Abstract:
PURPOSE:To enable an acoustic signal display device to cope with rapid changes in sound wave signals by shortening a noise integrating time to reduce noises. CONSTITUTION:A frequency analyzing unit 1 carries out frequency analysis on sound wave signals Si from a target so as to divide them into a fundamental wave component and its higher harmonic wave component, and sends out frequency analysis output signals A(f). An adding unit 2 adds the frequency analysis output signals A(f) to each other, and sends out addition output signals S(f). A display unit 3 displays the addition output signals S(f). By adding the fundamental wave component and its higher harmonic wave component to each other by means of the adding unit 2, variation width of a random noise component can be made small while keeping intensity of a signal component as it is.
Inventors:
KONDO KUNIO
Application Number:
JP21567891A
Publication Date:
March 02, 1993
Filing Date:
August 28, 1991
Export Citation:
Assignee:
NEC CORP
International Classes:
G01H3/04; G01H3/10; G01R23/16; (IPC1-7): G01H3/04; G01H3/10; G01R23/16
Attorney, Agent or Firm:
Uchihara Shin
Next Patent: JPS552644