Abstract: In a system and a method for locating a mobile noise source, a sound sensing device catches a sound wave of the mobile noise source, and generates and stores a current sound characteristic information corresponding to the sound wave. An image pickup device catches an image of the mobile noise source, and generates and stores an entry of current image data corresponding to the mobile noise source. A spectrogram and image database stores entries of default spectrogram data and entries of default image data. An information processing unit compares the current sound characteristic information with the entries of default spectrogram data, and stores and associates the current sound characteristic information with the mobile noise source in the spectrogram and image database if no similarity between the current sound characteristic information and the entries of default spectrogram data reaches a preset value.

Abstract: In a system for locating a mobile noise source, a sound sensing device catches a sound wave of a mobile noise source within a specified area for a specified time period, and outputs a characteristic information corresponding to the sound wave. An audio comparing device in communication with the sound sensing device compares the characteristic information with a set of standard data, and outputs an activating signal in response to a specific compared result. An image pickup device in communication with the audio comparing device performs an image pickup operation to catch an image of the mobile noise source in response to the activating signal.

Abstract: In a system and a method for locating a mobile noise source, a sound sensing device catches a sound wave of the mobile noise source, and generates and stores a current sound characteristic information corresponding to the sound wave. An image pickup device catches an image of the mobile noise source, and generates and stores an entry of current image data corresponding to the mobile noise source. A spectrogram and image database stores entries of default spectrogram data and entries of default image data. An information processing unit compares the current sound characteristic information with the entries of default spectrogram data, and stores and associates the current sound characteristic information with the mobile noise source in the spectrogram and image database if no similarity between the current sound characteristic information and the entries of default spectrogram data reaches a preset value.

Abstract: A sound-modulating device used in a confined space is provided. The sound-modulating device includes an event detector and an audio module in communication with each other. The event detector detects an event and generates a trigger signal in response to the detected event. The audio module plays a music segment in response to the trigger signal. The frequencies of the music segment range from 20 Hz to 20000 Hz. The intensities of the music segment are smaller than or equal to 75 dB.

Abstract: A sound-modulating device used in a confined space is provided. The sound-modulating device includes an event detector and an audio module in communication with each other. The event detector detects an event and generates a trigger signal in response to the detected event. The audio module plays a music segment in response to the trigger signal. The frequencies of the music segment range from 20 Hz to 20000 Hz. The intensities of the music segment are smaller than or equal to 75 dB.

Abstract: An indoor sound-modulating device is provided. The indoor sound-modulating device includes a low-frequency noise detector, an automatic actuator and an audio signal generator. The low-frequency noise detector detects low-frequency noise and generates a first modulating signal in response to the detected low-frequency noise. The automatic actuator issues a second modulating signal in response to a predetermined state. The audio signal generator generates a low-frequency audio signal for eliminating the low-frequency noise in response to the first modulating signal and generates a high-frequency repellent audio signal in response to the second modulating signal. The low-frequency audio signal has a frequency ranging from 20 Hz to 350 Hz, while the high-frequency repellent audio signal has a frequency not less than 8000 Hz.

Abstract: An indoor sound-modulating device is provided. The indoor sound-modulating device includes a low-frequency noise detector, an automatic actuator and an audio signal generator. The low-frequency noise detector detects low-frequency noise and generates a first modulating signal in response to the detected low-frequency noise. The automatic actuator issues a second modulating signal in response to a predetermined state. The audio signal generator generates a low-frequency audio signal for eliminating the low-frequency noise in response to the first modulating signal and generates a high-frequency repellent audio signal in response to the second modulating signal. The low-frequency audio signal has a frequency ranging from 20 Hz to 350 Hz, while the high-frequency repellent audio signal has a frequency not less than 8000 Hz.

Abstract: In a system for locating a mobile noise source, a sound sensing device catches a sound wave of a mobile noise source within a specified area for a specified time period, and outputs a characteristic information corresponding to the sound wave. An audio comparing device in communication with the sound sensing device compares the characteristic information with a set of standard data, and outputs an activating signal in response to a specific compared result. An image pickup device in communication with the audio comparing device performs an image pickup operation to catch an image of the mobile noise source in response to the activating signal.

Abstract: An elimination system for diverting dental instrument noise includes an audio player, a sound sensor, and a controller. The audio player is used for broadcasting an audio content. The sound sensor may sense noise from a dental instrument, thereby outputting a sensing signal. The controller is electrically connected with the audio player and the sound sensor. According to the sensing signal from the sound sensor, the controller controls the audio content that is broadcasted by the audio player.

Abstract: A fabrication of a low dielectric constant nano-zeolite thin film includes preparing a zeolite nanoparticle suspension that includes zeolite nanoparticles suspended in a solvent and each zeolite nanoparticle includes pores with templating agents disposed inside the pores; performing a heat treatment on a substrate; vaporizing the zeolite nanoparticle suspension to form vaporized droplets containing the zeolite nanoparticles; using a gas to carry the vaporized droplets containing the zeolite nanoparticles into a plasma to perform a plasma reaction; and allowing the plasma-treated zeolite nanoparticles to deposit on the heated substrate to form a nano-zeolite thin film with a dielectric constant less than 2 and the templating agents removed.