Abstract: In certain aspects, an active noise control (ANC) method and system for a headphone are disclosed. It is determined whether a music signal is played by a speaker of the headphone. Responsive to the music signal not being played by the speaker and a noise level of an ambient noise signal being greater than a noise threshold, a set of noise feedforward (FF) signals is obtained based on a set of FF microphone signals acquired by a set of FF microphones of the headphone. A noise feedback (FB) signal is obtained based on a first FB microphone signal acquired by a FB microphone of the headphone. A set of leakage monitoring parameters is obtained based on the set of noise FF signals and the noise FB signal. A set of FF filter parameters for a set of FF filters is adjusted based on the set of leakage monitoring parameters.

Abstract: In certain aspects, a leakage compensation method and system for a headphone are disclosed. An audio reference signal is obtained responsive to an audio signal to be played by a speaker of the headphone. An audio feedback signal is obtained based on a microphone signal acquired by a microphone of the headphone responsive to the audio signal being played by the speaker. One or more compensation parameters of a compensation filter are determined based on the audio reference signal and the audio feedback signal. The compensation filter is configured using the one or more compensation parameters. A music signal is processed using the compensation filter to generate a leakage-compensated music signal to be played by the speaker.

Abstract: In certain aspects, a noise suppression method and system for a personal sound amplification product (PSAP) are disclosed. An environmental audio signal acquired through one or more microphones is processed to generate a set of first sub-band signals in a set of first sub-bands. The environmental audio signal is also processed to generate a set of second sub-band signals in a set of second sub-bands. A set of first gains for the set of first sub-band signals in the set of first sub-bands is determined based on the set of second sub-band signals in the set of second sub-bands. The set of first sub-band signals is processed based on the set of first gains to generate a noise-suppressed audio signal.

Abstract: In certain aspects, a noise suppression method and system for a personal sound amplification product (PSAP) are disclosed. An environmental audio signal acquired through one or more microphones is processed to generate a set of first sub-band signals in a set of first sub-bands. The environmental audio signal is also processed to generate a set of second sub-band signals in a set of second sub-bands. A set of first gains for the set of first sub-band signals in the set of first sub-bands is determined based on the set of second sub-band signals in the set of second sub-bands. The set of first sub-band signals is processed based on the set of first gains to generate a noise-suppressed audio signal.

Abstract: In certain aspects, a leakage compensation method and system for a headphone are disclosed. An audio reference signal is obtained responsive to an audio signal to be played by a speaker of the headphone. An audio feedback signal is obtained based on a microphone signal acquired by a microphone of the headphone responsive to the audio signal being played by the speaker. One or more compensation parameters of a compensation filter are determined based on the audio reference signal and the audio feedback signal. The compensation filter is configured using the one or more compensation parameters. A music signal is processed using the compensation filter to generate a leakage-compensated music signal to be played by the speaker.

Abstract: In certain aspects, an active noise control (ANC) method and system for a headphone are disclosed. It is determined whether a music signal is played by a speaker of the headphone. Responsive to the music signal not being played by the speaker and a noise level of an ambient noise signal being greater than a noise threshold, a set of noise feedforward (FF) signals is obtained based on a set of FF microphone signals acquired by a set of FF microphones of the headphone. A noise feedback (FB) signal is obtained based on a first FB microphone signal acquired by a FB microphone of the headphone. A set of leakage monitoring parameters is obtained based on the set of noise FF signals and the noise FB signal. A set of FF filter parameters for a set of FF filters is adjusted based on the set of leakage monitoring parameters.

Abstract: A cloud server platform end is used to construct a mass spectrum species classification model, extract a mass spectrum data feature, and construct a training model of the convolutional neural network; a user platform end is used to upload the mass spectrum, experiment condition and device data, directly screen and identify the type of the mass spectrum based on the mass spectrum species classification model or the mass spectrum information base, automatically compare and identify the species and name of the pesticides based on the neural network model trained by the cloud server platform end, and feedback the comparison result to the user. The disclosure solves the restriction on the purchase of standards for user, the use of the system is not limited by the location, and the pesticide residues could be detected automatically, quickly and accurately.

Abstract: A cloud server platform end is used to construct a mass spectrum species classification model, extract a mass spectrum data feature, and construct a training model of the convolutional neural network; a user platform end is used to upload the mass spectrum, experiment condition and device data, directly screen and identify the type of the mass spectrum based on the mass spectrum species classification model or the mass spectrum information base, automatically compare and identify the species and name of the pesticides based on the neural network model trained by the cloud server platform end, and feedback the comparison result to the user. The disclosure solves the restriction on the purchase of standards for user, the use of the system is not limited by the location, and the pesticide residues could be detected automatically, quickly and accurately.

Abstract: Disclosed is an electronic ID database and detection method for pesticide compounds in edible agro-products based on GC-Q-Orbitrap. The electronic ID database includes a collection of various pesticide compounds electronic ID information and is sorted according to retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, mass spectrum, fragment ions information and intelligent matching value. The detection method includes sample pretreatment procedures, setting GC-Q-Orbitrap operating conditions and screening procedures for pesticide residues in samples, wherein setting GC-Q-Orbitrap operating conditions includes setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find out pesticide compounds in electronic ID database. If there is a match, the corresponding electronic ID information is extracted.

Abstract: Disclosed is an electronic ID database and detection method for pesticide compound in edible agro-products based on LC-Q-Orbitrap. The electronic ID database includes a collection of various pesticides compound electronic ID information, intelligent matching values and collision energies. It is ordered according to the retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, adduct ions information, fragment ions information, collision energies, and the optimal full scan mass spectrum. The detection method includes sample pre-treatment, setting LC-Q-Orbitrap operating conditions and sample pesticide residue screening. Setting LC-Q-Orbitrap operating conditions contain setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find pesticide compounds electronic ID database. If matching, the corresponding electronic ID information is extracted.

Abstract: Disclosed is an electronic ID database and detection method for pesticide compounds in edible agro-products based on GC-Q-Orbitrap. The electronic ID database includes a collection of various pesticide compounds electronic ID information and is sorted according to retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, mass spectrum, fragment ions information and intelligent matching value. The detection method includes sample pre-treatment procedures, setting GC-Q-Orbitrap operating conditions and screening procedures for pesticide residues in samples, wherein setting GC-Q-Orbitrap operating conditions includes setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find out pesticide compounds in electronic ID database. If there is a match, the corresponding electronic ID information is extracted.

Abstract: Disclosed is an electronic ID database and detection method for pesticide compound in edible agro-products based on LC-Q-Orbitrap. The electronic ID database includes a collection of various pesticides compound electronic ID information, intelligent matching values and collision energies. It is ordered according to the retention time in the electronic ID. The electronic ID contains pesticide compounds information, retention time, adduct ions information, fragment ions information, collision energies, and the optimal full scan mass spectrum. The detection method includes sample pre-treatment, setting LC-Q-Orbitrap operating conditions and sample pesticide residue screening. Setting LC-Q-Orbitrap operating conditions contain setting suitable chromatography and mass spectrometry conditions. In pesticide residue screening procedures, firstly, the retention time is used to find pesticide compounds electronic ID database. If matching, the corresponding electronic ID information is extracted.

Abstract: A combination automobile detailing machine having a battery powered drive mechanism which powers three different interchangeable accessory attachments for detailing an automobile.