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公开(公告)号：US20230058981A1
公开(公告)日：2023-02-23
申请号：US17474077
申请日：2021-09-14
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
IPC分类号： G10L21/0364 , G10L21/0208 , G10L19/018 , H04N7/15
摘要： A conference terminal and an echo cancellation method for a conference are provided. In the echo cancellation method, a synthetic speech signal is received. The synthetic speech signal includes a user speech signal of a speaking party corresponding to a first conference terminal of multiple conference terminals and an audio watermark signal corresponding to the first conference terminal. One or more delay times corresponding to the audio watermark signal are detected in a received audio signal. The received audio signal is recorded through a sound receiver of a second conference terminal of the conference terminals. An echo in the received audio signal is canceled according to the delay time.
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公开(公告)号：US20230030369A1
公开(公告)日：2023-02-02
申请号：US17476477
申请日：2021-09-16
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
IPC分类号： G10L19/018
摘要： A processing method of sound watermark and a sound watermark generating apparatus are provided. In the method, a call reception sound signal is obtained by a sound receiver. A reflection sound signal is generated according to a virtual reflection condition and the call reception sound signal. The reflection sound signal is a sound signal obtained by simulating a sound output by the sound source, then being reflected by the external object, and being further recorded by the sound receiver. The phase of the reflection sound signal is shifted according to a watermark indication code to generate a sound watermark signal. The sound watermark signal includes the reflection sound signal with the phase shift. Accordingly, at the receiver end, the sound watermark signal via the feedback path could be eliminated by echo cancellation, and the sound watermark signal would not affect the speech signal on the call transmission path.
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公开(公告)号：US11026022B1
公开(公告)日：2021-06-01
申请号：US16740507
申请日：2020-01-13
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
摘要： The disclosure provides an audio signal processing circuit and an audio signal processing method, adapted for processing the input signal of a speaker configured with a rated power. The audio signal processing circuit includes, but not limited to, an audio signal generator and a power adjuster. The audio signal generator provides an audio signal including a high-frequency signal and a middle and low-frequency signal. The power adjuster is electronically coupled to the audio signal generator, and adjusts the power of the high-frequency signal according to an enhanced power larger than the rated power without adjusting the power of the middle and low-frequency signal. The output signal of the power adjuster can be inputted into the speaker. Accordingly, the transmission range for the high-frequency signal can be improved.
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公开(公告)号：US11012800B2
公开(公告)日：2021-05-18
申请号：US16740502
申请日：2020-01-13
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
摘要： A correction system and a correction method of signal measurement are provided. In the method, a transmitted signal and a received signal are divided into a plurality of transmitted signal groups and a plurality of received signal groups according to a time length, respectively. The received signal is related to a signal received after the transmitted signal is transmitted, and the transmitted signal is a periodic signal. A plurality of to-be-evaluated groups are selected from the received signal groups according to a correlation between the transmitted signal groups and the received signal groups. The correlation corresponds to a delay between the transmitted signal and the received signal. The signal energy of the received signal is determined according to the signal energy of the to-be-evaluated groups. Accordingly, the accuracy of signal measurement can be improved.
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5.发明授权公开(公告)号：US10735883B2
公开(公告)日：2020-08-04
申请号：US16531770
申请日：2019-08-05
申请人： ACER INCORPORATED
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
摘要： A sound effect controlling method and a sound outputting device with orthogonal base correction are provided. The sound effect controlling method includes the following steps. Firstly, 6 or 8 initial sound signals are generated according to an original left sound signal and an original right sound signal. Next, a first gain is calculated according to a rotation angle and a first axial angle, and a second gain is calculated according to the rotation angle and a second axial angle, wherein the first axial angle and the second axial angle are orthogonal. Lastly, a modified left sound signal and a modified right sound signal are obtained according to the first gain and the second gain.
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公开(公告)号：US20190250260A1
公开(公告)日：2019-08-15
申请号：US15984427
申请日：2018-05-21
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng , Wen-Cheng Hsu , Hsing-Chu Wu
摘要： An electronic device including a sound receiver and a processor is provided. The sound receiver receives a sound signal provided by a sound generator. When the processor determines that an obstacle is blocked between the electronic device and the fixed device, the processor estimates a virtual position of the electronic device at a current time according to previous movement information and a previous position of the electronic device. The virtual position has a shortest path between a boundary position of the obstacle and the sound generator. The processor obtains a first relative distance between the electronic device and the boundary position according to the sound signal received by the sound receiver and the boundary position. The processor calculates a relative velocity and a relative acceleration of the electronic device relative to the fixed device at the current time according to the sound signal and the first relative distance.
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公开(公告)号：US20160217808A1
公开(公告)日：2016-07-28
申请号：US14659542
申请日：2015-03-16
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
摘要： A speech recognition apparatus and a speech recognition method are provided. In the invention, whether an original voice sampling signal corresponding to a target voice frame is a noise signal is determined according to a ratio of an energy of a first consonant frequency band signal to an energy of a second consonant frequency band signal, a ratio of an energy of the first consonant frequency band signal to an energy of the original voice sampling signal and a ratio of an energy of the second consonant frequency band signal to an energy of the original voice sampling signal.
摘要翻译： 提供语音识别装置和语音识别方法。 在本发明中，根据第一辅音频带信号的能量与第二辅音频带信号的能量的比率来确定与目标语音帧对应的原始语音采样信号是否为噪声信号， 第一辅音频带信号的能量与原始语音采样信号的能量以及第二辅音频带信号的能量与原始语音采样信号的能量的比率。
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公开(公告)号：US11631391B1
公开(公告)日：2023-04-18
申请号：US17577001
申请日：2022-01-16
申请人： ACER INCORPORATED
发明人： Po-Jen Tu , Ruey-Ching Shyu , Jia-Ren Chang , Kai-Meng Tzeng
IPC分类号： G10K11/178 , H04R3/00
摘要： An electronic system includes a fan module, an embedded controller, a reference microphone, an error microphone, an active noise cancellation controller, and a micro speaker module. The reference microphone outputs a wide-band noise signal associated with the operation of the fan module. The error microphone outputs an error signal by detecting the noise level of the electronic system. According to the wide-band noise signal, the error signal and the fan information provided by the embedded controller, the active noise cancellation controller provides a speaker control signal by calculating narrow-band and wide-band noises of the fan module, and drives the micro speaker module to provide a noise cancellation signal which is adjusted according to the wind pressure under the current fan speed of the fan module. The error signal may be reduced to zero by adaptively adjusting the noise cancellation signal for canceling the noises in the electronic system.
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公开(公告)号：US20220343889A1
公开(公告)日：2022-10-27
申请号：US17492685
申请日：2021-10-04
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng , Ming-Chun Fang
IPC分类号： G10K11/178 , H04R5/04 , G10L21/0208
摘要： A method and an apparatus for audio signal processing selection are provided. In the method, multiple audio signal processing operations are performed on a synthesized audio signal to generate multiple processed audio signals, the audio signal processing operations are evaluated according to the comparison results between the processed audio signals and the primary signal, and the audio signal processing operation corresponding to a designated application and the designated audio output mode is selected according to the evaluation result of the audio signal processing operations. The synthesized audio signal is generated by adding a secondary signal into a primary signal. The signal processing is related to remove the secondary signal from the synthesized audio signal. Those processed audio signals are used by the designated application at the designated audio output mode. The comparison result is related to signal similarity. The evaluation result is related to the highest signal similarity.
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公开(公告)号：US20210152934A1
公开(公告)日：2021-05-20
申请号：US16740507
申请日：2020-01-13
申请人： Acer Incorporated
发明人： Po-Jen Tu , Jia-Ren Chang , Kai-Meng Tzeng
摘要： The disclosure provides an audio signal processing circuit and an audio signal processing method, adapted for processing the input signal of a speaker configured with a rated power. The audio signal processing circuit includes, but not limited to, an audio signal generator and a power adjuster. The audio signal generator provides an audio signal including a high-frequency signal and a middle and low-frequency signal. The power adjuster is electronically coupled to the audio signal generator, and adjusts the power of the high-frequency signal according to an enhanced power larger than the rated power without adjusting the power of the middle and low-frequency signal. The output signal of the power adjuster can be inputted into the speaker. Accordingly, the transmission range for the high-frequency signal can be improved.
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