Invention Grant
- Patent Title: Audio playback apparatus and method having a noise-canceling mechanism
-
Application No.: US16923586Application Date: 2020-07-08
-
Publication No.: US11151977B2Publication Date: 2021-10-19
- Inventor: Wei-Hung He
- Applicant: REALTEK SEMICONDUCTOR CORPORATION
- Applicant Address: TW Hsinchu
- Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee: REALTEK SEMICONDUCTOR CORPORATION
- Current Assignee Address: TW Hsinchu
- Agency: WPAT, PC
- Priority: TW109100481 20200107
- Main IPC: G10K11/178
- IPC: G10K11/178 ; G06F3/16

Abstract:
The present disclosure discloses an audio playback apparatus having a noise-canceling mechanism that includes an audio-receiving circuit, an adjusting parameter generation circuit, a frequency-warping filter circuit and an audio playback circuit. The audio-receiving circuit receives an audio signal. The adjusting parameter generation circuit generates adjusting parameters according to at least the audio signal. The frequency-warping filter circuit includes first order all pass filter units to filter the audio signal in series to generate a plurality of filtered results, multiplication units to respectively multiply each of the filtered results by one of adjusting parameters to generated adjusted filtered results and an adder circuit to add the filtered results to generate a noise-canceling signal. The audio playback circuit playbacks the audio signal and the noise-canceling signal at the same time.
Public/Granted literature
- US20210210064A1 Audio playback apparatus and method having a noise-canceling mechanism Public/Granted day:2021-07-08
Information query