Chung Yuan Christian University

Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan

Institute of Nuclear Energy Research, Atomic Energy Council, Executive Yuan, R.o.c

Institute of Neclear Energy Research

Cheng-Yuan Chang

Sen-Maw Kuo

Chung-Hao Huang

Lun-Hui Lee

Yen-Nung Lai

Sung-Chih Ku

Chong-Rui Huang

Wei Chun Hsu

Yu-Hsiang Hung

Chiung-Wei Huang

Sheng-Ting Li

A hearing aid device with functions of anti-noise and 3D sound recognition is disclosed. The hearing aid device comprises N microphones, at least one A/D converter, a modular electronic device, a D/A converter, and a loudspeaker. According to the present invention, the modular electronic device is configured for generating N second audio signals based on N first audio signals and a HRTF signal, and then summing up the N second audio signals to a reference signal. Moreover, the modular electronic device is further configured for generating a first output signal after applying an ANC process to the reference signal, converting the reference signal to a second output signal, and then generating an output signal based on the first output signal and the second output signal. Consequently, the loudspeaker broadcasts a sound according to the output signal.

Hearing aid device with functions of anti-noise and 3D sound recognition

A design method for feedforward active noise control (ANC) system using analog filter. In which, at least one noise collecting system is adopted for collecting a real environmental noise for obtaining a reference signal and a target signal. According to the reference signal and the target signal, a first adaptive system identifying unit is enabled to complete a system identification process for producing a first adaptive filter. After that, a second adaptive system identifying unit is enabled to complete a system identification process based on the reference signal, the target signal and the first adaptive filter for producing a second adaptive filter. After the second adaptive filter is converted to a low-order digital filter, the digital filter is further converted to a physical analog filter circuit. Consequently, a feedforward ANC system comprising the physical analog filter circuit, a pre-amplifier unit, a reference microphone, and a mixer is established.

Method for feedforward active noise control system using analog filter

A design method for feedforward active noise control system is disclosed. Based on a target signal and a reference signal, a first adaptive system identifying unit is enabled to complete a first system identification process for producing a first adaptive filter, and then a second adaptive system identifying unit is enabled to complete a second system identification process for producing a second adaptive filter. After the second adaptive filter is converted to a digitally-controlled filter by using a system identification tool, the digitally-controlled filter is implemented into a DSP chip of a feedforward active noise control system. As a result, it is able to find that not only the computing loading of the DSP chip is significantly lowered while an adaptive algorithm executes an active noise control computing, but also the feedforward active noise control system exhibits a broad frequency bandwidth noise cancelling ability.

Method for feedforward active noise control system

The present disclosure illustrates a map creation system and a method for a movable robot. The map creation system includes a movable robot and a display device. The movable robot includes a robot body; a driving unit driving the robot body to move in a space; an image capturing unit capturing a image in the space; a sampling unit sampling in the space to obtain a sample; a control unit controlling the operation of the driving unit, the image capturing unit and the sampling unit; and a power supply unit supplying an electrical power to each unit. The display device displays the received image and marks a location in the space where the sample is obtained on the image, and synchronously displays a movement trace of the movable robot in the space according to the driving instructions of the driving unit.

Map creation system and method thereof for movable robot

Disclosures of the present invention describe a portable smart electronic device, which consists of several first reference microphones, a first loudspeaker, a first error microphone, several of second reference microphones, a second loudspeaker, a second error microphone, and a noise controlling module. Both the first error microphone and the second error microphone are set to have a noise detection direction and face to a first region near to a right ear and a second region near to a left ear, respectively. Therefore, the noise detection direction and an audio broadcasting direction of both the first loudspeaker and the second loudspeaker have a same progress direction. By such arrangement, this portable smart electronic device can be operated to adaptively provide an anti-noise audio to the first region and the second region for establishing a quiet zone in both the two regions by attenuating various environment noises.

Portable smart electronic device for noise attenuating and audio broadcasting

The present invention discloses a fan noise controlling system, comprising: at least one cylinder-shaped limiter, a plurality of error sensors, a noise controlling module, and at least one loudspeaker. According to the particular design of the present invention, the cylinder-shaped limiter is connected to a fan device for confining the transmission path of at least one fan noise signal. On the other hand, the error sensors are disposed in the internal of the cylinder-shaped limiter, and the loudspeaker is disposed at an axis position of the fan device. When this fan controlling system normally works, the noise controlling module is able to generate at least one anti-noise signal according to a plurality of error signals collected by the error sensors at consecutive previous time points, and then the loudspeaker is driven to broadcast the anti-noise signal for carrying out an outstanding efficacy on the cancellation of the fan noise.

Fan noise controlling system

Differing from conventionally-used exhaust pipe utilizing discontinuous section area(s) and sound-absorbing material(s) to abate the noise produced by an engine, the present invention provides a waste air exhausting device consisting of: a housing, a supporting plate disposed in the housing, a miniature microphone disposed at the end of the housing, and a loudspeaker disposed on the supporting plate. Therefore, according to the noise produced by the engine, a noise controller system coupling to the miniature microphone and the loudspeaker is able to produce an anti-noise signal through the loudspeaker for abating the engine noise. On the other hand, the noise controller system can also produce an anti-noise signal having specific frequencies components according to the frequency of the engine noise and a reference signal, so as to modulate the frequency of the engine noise by broadcasting the anti-noise signal having the specific frequencies components in the housing through the loudspeaker.

Waste air exhausting device having functionality to abate noise and modulate noise frequency

The present invention provides an electronic helmet for cancelling noises, which comprises a helmet including a plurality of microphones, a plurality of speakers and a first communication unit; and a mobile device including a second communication unit and a control unit. When the first communication unit in the helmet connects to the second communication unit in the mobile device, the control unit generates a plurality of control signals according to at least one sound or noise detected by the plurality of microphones. The mobile device uses the plurality of control signals to control the plurality of speakers outputting the at least one sound or anti-noise cancelling the noise. By the above electronic helmet, the present invention also provides a method integrating active noise control, hands-free communication, music listening, and voice navigation so as to achieve the proposes of cancelling the noises and improving the riding quality.

Electronic helmet and method thereof for cancelling noises

A control device using image tracking technology for controlling overhead crane system is disclosed, in which a plurality of image capturers are used to monitor a operating space and a position of the hoisted load, a respective image of two of which are used to establish a 3D coordinate data, so that an image processor calculates parameters including a hoisted load position (P), a swing angle (&#x3b8;) and a cable length (l) by referring to the images received, and generates a feedback signal to a crane controller. The crane controller issues a drive signal according to the feedback signal to drive the overhead crane system.

Control device using image tracking technology for controlling overhead crane system

A method of reducing computational demand for image tracking includes first receiving a plurality of images of a load hoisted with hanging wire in a preset transitional space, setting at least one monitoring point each at the load and the hanging wire, respectively, providing a tracking frame at the outer periphery of each monitoring point, allowing each tracking frame to track on its corresponding monitoring point that each monitoring point is kept on a relative location within each corresponding tracking frame, and producing the same displacement as that of the monitoring point, and lastly computing the displacement of each tracking frame thus obtaining the displacement of each monitoring point in correspondence to the tracking frame to calculate various displacement of the hanging wire and the load, respectively. With this image tracking method, the processing quantity of whole image data is effectively decreased and computational demand of equipments is reduced.

Method of reducing computational demand for image tracking

An active noise reduction system is provided for receiving an audio input signal and a noise interference signal and calculating an audio broadcasting signal according to a Feedback Filtered-X Least-Mean-Square (FFXLMS) algorithm, wherein the FFXLMS algorithm optimizes a (convergence factor) &#x3bc; so as to decrease the numbers of divisions operated by the active noise reduction system and increase the operation speed of the active noise reduction system.

Growing community of inventors

Taoyuan, Taiwan

Cheng-Yuan Chang