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. 31, 2020
Filed:
Dec. 06, 2019
Sound playback device and method for masking interference sound through noise masking signal thereof
Unlimiter Mfa Co., Ltd., Eden Island, SC (US);
Kuo-Wei Kao, Taipei, TW;
Cheng-Te Wang, Taipei, TW;
Yu-Chieh Huang, Taipei, TW;
Wei-Lin Chang, Taipei, TW;
I-Ting Lee, Taipei, TW;
Kuo-Ping Yang, Taipei, TW;
UNLIMITER MFA CO., LTD., Eden Island, SC;
Abstract
A sound playback device and a method for masking interference sound through a noise masking signal thereof are disclosed. The method comprises the steps of: playing an audio signal as a noise masking signal; receiving an ambient sound; analyzing whether the ambient sound has an interference sound in N different frequency bands; if so, finding at least one interference sound frequency band and a time period, and the interference sound conforms to the condition that an instant sound entropy value is greater than a dynamic sound average entropy value, wherein the instant sound entropy value is the calculated sound entropy value in a current sampling time; the dynamic sound average entropy value is an average entropy value of the sum of the previous instant sound entropy values; and increasing an energy of the noise masking signal in the interference sound frequency band and the time period.