The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2014
Filed:
Oct. 26, 2010
Kaoru Satoh, Kanagawa, JP;
Kaoru Satoh, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A tone determination device, which determines the tonality of an input signal, is capable of reducing calculation complexity. Therein a frequency conversion unit () converts the frequency of an input signal; a downsampling unit () carries out shortening processing which shortens the vector series length of the frequency-converted signal; a constancy determination unit () determines the constancy of the input signal; depending on the constancy of the input signal, a vector selection unit () selects either the vector series of the post-frequency conversion signal or the vector series after the shortening of the vector series length; a correlation analysis unit () uses the vector series selected by the vector selection unit () to obtain correlations; and a tone determination unit () uses the correlations to determine the tonality of the input signal.