公开(公告)号：US20230131573A1

公开(公告)日：2023-04-27

申请号：US17699631

申请日：2022-03-21

Applicant: AIROHA TECHNOLOGY CORP.

Inventor： Chao-Ling HSU ,  Li-Wen CHI ,  Kai-Sheng CHEN

IPC: G10K11/178

Abstract: The present invention relates to an active noise cancellation integrated circuit for stacking multiple anti-noise signals, an associated method, and an active noise cancellation headphone using the same. The method is applicable to an audio playback device with multiple ANC filtering units. The method includes: acquiring an anti-noise signal from an ANC filtering unit; generating a decoupled signal by processing the anti-noise signal with the transfer function of a physical channel and operations of other ANC filtering units; performing a signal superposition, wherein an anti-noise signal from another ANC filtering unit is superposed with the decoupled signal; and performing an audio playback based on the superposed signal and an audio signal such that noise is eliminated.

公开(公告)号：US20210014616A1

公开(公告)日：2021-01-14

申请号：US16925470

申请日：2020-07-10

Applicant: Airoha Technology Corp.

Inventor： Sheng-Yu CHIU ,  Kai-Sheng CHEN ,  Hsi-Yuan TSAI ,  Chih-Kang WANG

IPC: H04R5/04 ,  H04L12/18 ,  H04W76/15 ,  H04W76/18

Abstract: A wireless audio output device including a first audio output unit and a second audio output unit is provided. The wireless audio output device establishes a wireless link with an audio source, which outputs a first original audio data and a second original audio data. The first and the second audio output units simultaneously output and play the first and the second original audio data. When the first audio output unit successfully receives the first original audio data but the second audio output unit fails to receive the second original audio data, the first audio output unit drops the received first original audio data, and the first and the second audio output units generate a first concealment audio data and a second concealment audio data, respectively, by using a PLC algorithm and play the first concealment audio data and the second concealment audio data, respectively.

公开(公告)号：US20230186890A1

公开(公告)日：2023-06-15

申请号：US17856245

申请日：2022-07-01

Applicant: Airoha Technology Corp.

Inventor： Kai-Sheng CHEN ,  En-Tai KUO ,  Dong-Jun LIN ,  Shih-Kai HE

IPC: G10K11/178 ,  H04R1/10

CPC classification number: G10K11/17854 ,  G10K11/17825 ,  G10K11/17881 ,  G10K11/17823 ,  H04R1/1083 ,  G10K2210/3026 ,  G10K2210/3028 ,  G10K2210/3044 ,  G10K2210/3027 ,  G10K2210/1081 ,  H04R2460/01

Abstract: The disclosure provides an audio processing device comprising a first filter and a second filter. The first filter is configured to generate a first filtered signal based on an error signal, the error signal representative of audible sound at a target space. The second filter is configured to generate a second filtered signal based on the error signal. An anti-noise signal is generated based on the first filtered signal and the second filtered signal, and the anti-noise signal is included in the error signal. The first filter is connected to the second filter in parallel.