Baidu Online Network Technology (beijing) Co., Ltd.

Beijing Baidu Netcom Science and Technology Co., Ltd.

Beijing Sogou Technology Development Co., Ltd.

Beijing Icetech Science & Technology Co., Ltd.

Jiangsu Kfcc New Materials Co., Ltd.

Lei Geng

Ming Zhu

Xuebin Wang

Pan Gao

Zhiguo Li

Zhenjie Yang

Shuangying Xie

Ruifen Xu

Hongbing Bian

Yilong Yu

Zhuoer Ma

A method and apparatus for processing an audio processing chip, and an electronic device are provided. A specific implementation of the method includes: controlling the audio processing chip to perform firmware updating, the firmware updating including: updating second firmware stored in a second storage area of the audio processing chip to target firmware, or storing the target firmware to an empty second storage area in the audio processing chip; in response to an abnormality being not present in the firmware updating, determining the target firmware as firmware to be run in the audio processing chip; and in response to an abnormality being present in the firmware updating, determining the first firmware as the firmware to be run in the audio processing chip.

Method and apparatus for processing audio processing chip, and electronic device

A method and a device for processing an audio signal in a vehicle are provided. The method includes: obtaining an audio signal by a microphone array; performing echo cancellation on the obtained audio signal, to obtain a first processed signal; and performing beamforming on the first processed signal according to sound zones in which microphones of the microphone array are located, to obtain a second processed signal, wherein the vehicle includes at least two sound zones, and each microphone of the microphone array is located in at least one sound zone. With the beamforming, the requirements for isolation degree between different sound zones is not high, and the sound source of the audio signal can be accurately determined.

Method and device for processing an audio signal in a vehicle

A speech recognition method, device, apparatus and a computer-readable storage medium are provided. The method includes: starting a part of a microphone array to acquire a first speech signal; performing an echo cancellation process for the first speech signal to obtain a second speech signal; performing wakeup recognition for the second speech signal, to determine whether a wakeup word is included in the second speech signal; starting the microphone array to acquire a third speech signal, in the case that the wakeup word is included in the second speech signal; performing noise reduction for the third speech signal; and performing speech recognition for a noise-reduced signal. Computational load and power consumption during the speech recognition can be greatly reduced, because most processes of the front-end noise reduction algorithm are not started before the wakeup state and only a part of a microphone array is started.

Speech recognition method, device, apparatus and computer-readable storage medium

The present disclosure relates to a vehicle recognition method and system. The vehicle recognition method comprises: receiving a first image; extracting a first vehicle brand recognition region and a first color recognition region of the first image; recognizing the extracted first vehicle brand recognition region by a trained vehicle brand deep learning model; recognizing the extracted first color recognition region; and recognizing the vehicle based on the recognition results of the first vehicle brand recognition region and the first color recognition region.

Method and system for vehicle recognition

Embodiments of the present disclosure provide a method and a device for cancelling an echo, and a computer readable storage medium. The device includes a loudspeaker configured to play an acoustic signal corresponding to an analog audio signal. The device further includes a microphone configured to convert a mixed acoustic signal received into a mixed audio signal. The mixed acoustic signal includes an echo of the acoustic signal played and an acoustic signal from a user. The device further includes an analog-to-digital converter configured to convert the analog audio signal into a digital signal as an echo reference signal. The device further includes an echo canceller, configured to cancel an echo component from the mixed audio signal using the echo reference signal to obtain a user audio signal corresponding to the acoustic signal from the user.

Device and method for cancelling echo

Mobile phone with graphical user interface

A photoelectrochemical method on metal preservation is disclosed that includes applying a coating on metal surface and curing the coating. The coating includes: A) the film-forming component; and B) the surface modified nanometer titanium dioxide, which consists of nanometer titanium dioxide particle as substrate and the nonionic surfactant covered on the substrate surface. The diameter of the nanometer titanium dioxide substrate is 1-100 nm. The hydrophile-lipophile balance value of the nonionic surfactant is 1-10 and is contained of 1-20 wt % based on the weight of nanometer titanium dioxide substrate. The content of the surface modified nanometer titanium dioxide is 0.1-10 wt % based on the total weight of the coating. The photoelectrochemical method on metal preservation through this disclosure is low cost and high efficient and obviously reduce the corrosion speed.

Surface modified nano-scaled titanium dioxide, preparation process thereof, coating containing the same, and photoelectrochemical method for metal preservation using the coating

Growing community of inventors

Beijing, China

Lei Geng