Noise separating apparatus, noise separating method, probability density function separating apparatus, probability density function separating method, testing apparatus, electronic device, program, and recording medium

A testing apparatus for testing a device under test, comprising:

• a noise separating apparatus that separates a probability density function of a predetermined noise component from a probability density function of a signal under test which is output from the device under test;
• and
• a deciding section that decides whether the device under test is acceptable based on standard deviation of the predetermined noise component separated by the noise separating apparatus, wherein the noise separating apparatus includes:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random noise component contained in the probability density function based on a magnitude of a predetermined frequency component in a main lobe of the spectrum.

A program to cause a noise separating apparatus to function, the noise separating apparatus separating a probability density function of a predetermined noise component from a probability density function of a signal under test,

• the program causing the noise separating apparatus to function as:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random component of noise contained in the signal under test based on a magnitude of a predetermined frequency component in a main lobe of the spectrum.

A recording medium storing thereon a program which causes a noise separating apparatus to function, the noise separating apparatus separating a probability density function of a predetermined noise component from a probability density function of a signal under test,

• the program causing the noise separating apparatus to function as:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random component of noise contained in the signal under test based on a magnitude of a predetermined frequency component in a main lobe of the spectrum.

A testing apparatus for testing a device under test, comprising:

• a noise separating apparatus that separates a probability density function of a predetermined noise component from a probability density function of a signal under test which is output from the device under test;
• and
• a deciding section that decides whether the device under test is acceptable based on standard deviation of the predetermined noise component separated by the noise separating apparatus, wherein the noise separating apparatus includes:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random noise component contained in the probability density function based on a magnitude of a predetermined frequency component in a side lobe of the spectrum.

A program to cause a noise separating apparatus to function, the noise separating apparatus separating a probability density function of a predetermined noise component from a probability density function of a signal under test,

• the program causing the noise separating apparatus to function as:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random component of noise contained in the signal under test based on a magnitude of a predetermined frequency component in a side lobe of the spectrum.

A recording medium storing thereon a program which causes a noise separating apparatus to function, the noise separating apparatus separating a probability density function of a predetermined noise component from a probability density function of a signal under test,

• the program causing the noise separating apparatus to function as:
• a domain transforming section that is supplied with the probability density function of the signal under test and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random component of noise contained in the signal under test based on a magnitude of a predetermined frequency component in a side lobe of the spectrum.

An electronic device for generating a predetermined signal, comprising:

• an operational circuit that generates the predetermined signal and outputs the predetermined signal;
• a probability density function computing section that measures the predetermined signal and computes a probability density function of the predetermined signal;
• and
• a probability density function separating apparatus that separates a predetermined component of the probability density function, wherein the probability density function separating apparatus includes:
• a domain transforming section that is supplied with the probability density function and transforms the probability density function into a spectrum in a frequency domain;
• and
• a standard deviation computing section that computes standard deviation of a random component contained in the predetermined signal based on a magnitude of a predetermined frequency component in a side lobe of the spectrum.