Abstract: A method for controlling a cleaning device is presented, which includes the following steps. A cleaning device includes a control unit, a fan module, an optical emitter, and an optical sensor. The optical emitter and the optical sensor are located in an air inlet of the fan module. The control unit is preset with a first impedance value (Z1), a second impedance value (Z2), and a threshold, where 0<Z1<Z2. Then, the control unit reads an impedance value (Z) of the fan module. If Z1<Z<Z2, the control unit drives the fan module. If Z2<Z, the control unit reads a detected value of the optical sensor. If the detected value exceeds the threshold, the control unit drives the fan module, so as to increase a suction force of the fan module. If the detected value is smaller than the threshold, the control unit turns off the fan module.

Abstract: A portable electronic device (100) includes a body (10) and a housing (30). The body has a speaker (20) and a groove (13). The speaker is received in the groove. The housing defines at least one main hole (34) and two subsidiary holes (35). The subsidiary holes is disposed adjacent to the at least one main hole.

Abstract: A portable electronic device (100) includes a main body (10) having at least one cavity (131) defined therein, at least one speaker device (20) being movable received in the cavity of the main body, and at least one latching mechanism (30) movably attached to the main body. The speaker device has a resonant chamber (28) defined therein, and a positioning stop member (262) extending therefrom. Each resonant chamber communicates with a corresponding cavity. The at least one latching mechanism includes a latching body (31), and the latching body is configured for selectably engaging with the positioning stop member to enable control of movement of a corresponding speaker device relative to the main body.

Abstract: A robotic vacuum cleaner is disclosed in the present invention, which comprises a controller, at least a driving wheel module, and a dust-collecting module. The controller is disposed on a housing plate. The driving wheel module, electrically connecting to the controller, further includes: a driver; a wheel connecting to the output shaft of the driver; a linkage rod, having two ends pivotally fixed on the housing plate and the driver respectively; and a resilience element, having two ends pivotally connected to the housing plate and the driver respectively. The dust-collecting module, disposed on the housing plate, is capable of vacuuming for filtering and collecting dust.

Abstract: An intelligent classification method is proposed. The method extracts vocal features from the temporal domain, spectral domain and statistical features for measuring the vocal signal. The measured result is grouped by comparing with the trained data with single voiced source, and then different voices can be separated from the vocal signal to be classified. The vocal features are evaluated from temporal domain and spectral domain and the statistical features, and the method can improve the accuracy of the voice classification.

Abstract: A cleaning device with sweeping and vacuuming functions includes a body accommodating a sweep module and a vacuum module. A main brush and an auxiliary brush driven by a power unit are pivoted in the sweep module. The main brush partially extends outside an opening at a bottom of the sweep module and contacts a ground surface. The sweep module has an outlet adjacent to a top of the auxiliary brush, and is pivoted in the body to freely and pivotally swing under weight. A first chamber of a dust collector of the vacuum module has an inlet corresponding to the outlet, and trash removed by the sweep module is collected into the first chamber. An air inlet communicating with an air intake component is formed above a second chamber of the dust collector. A suction port is formed below the second chamber to draw dust into the second chamber.

Abstract: A mobile robot platform and a method for sensing movement of the same are disclosed, which utilize two omni-directional meter wheels perpendicular to each other and a magnetic sensing module for detecting a moving condition of the platform moving on a planar surface while transmitting the detected moving condition to a signal processing unit to calculate the position, velocity, angular position and angular velocity of the platform.

Abstract: A media file searching system for a mobile phone is disclosed. The system comprises: a capturing module configured for capturing a section of rhythm sung by a user; a character calculating module configured for calculating a characteristic parameter of the section of the rhythm by using a levinson-durbin recursion arithmetic; a relevancy calculating module configured for calculating a relevancy of the calculated characteristic parameter with each characteristic parameter of each of the media files stored in the mobile phone by using a relevancy arithmetic; the relevancy calculating module further configured for searching a matched media file whose characteristic parameter have a highest relevancy with the characteristic parameters of the section of the rhythm; and a media player for playing the searched media file. A corresponding method is also disclosed.

Abstract: A portable electronic device (100) such as a mobile phone includes a plurality of microphones arranged/configured at different locations and for receiving audio input from different directions. A signal processor (127) electronically connected with the microphones separate the audio input into a plurality of isolated voice signals and an audio detector (129) electronically connected with the signal processor selects the best quality voice signal from the plurality of isolated voice signals.

Abstract: A method for adjusting frequency response curve of a speaker comprises these steps: testing sensitivity of the speaker in at least two types of hardware conditions and recording corresponding frequency response curves; selecting a frequency response curve that comes closest to falling within a predetermined range for selected frequency ranges; and adjusting the selected frequency response curve with a filter.

Abstract: A sound system (30) for a portable electronic device (20) is provided. The sound system includes a sound generator (28), a sound processor (25), and a speaker subsystem (24). The sound generator is configured for generating sound recordings with single sound format. The sound processor electronically connects with the sound generator and is configured for receiving the sound recordings with single sound format transmitted from the sound processor. The sound processor is configured for processing the sound recordings with single sound format into sound recordings with 5.1 surround format. The speaker subsystem electronically connects with the sound processor and is configured for receiving the sound recordings with 5.1 surround format transmitted from the sound processor and playing the sound recordings with 5.1 surround format.

Abstract: A portable electronic device (100) includes a body (10) and a housing (30). The body has a speaker (20) and a groove (13). The speaker is received in the groove. The housing defines at least one main hole (34) and two subsidiary holes (35). The subsidiary holes is disposed adjacent to the at least one main hole.

Abstract: A portable electronic device comprises a main body (10), and a voice-receiving device, a voice output device and a voice input device that are respectively configured in the main body. The voice-receiving device includes a signal-receiving unit (182) for receiving voice signal from a communication network of the portable electronic device and a noise-detecting unit (184) configured for detecting if a noise exists around the voice receiving device. The voice output device is electronically connected with the voice receiving device and configured for generating an audio signal to counteract the noise around the voice receiving device according to the information of the noise received from the noise-detecting unit. The voice input device is electronically connected with the voice receiving device and the voice output device. A noise-suppressing method of the portable electronic device is also disclosed.

Abstract: A method for increasing ring tone volume is provided. The method includes steps of: reading an audio file which is set as a current ring tone; determining whether the ring tone is a MP3 audio file or a musical instrument digital interface (MIDI) audio file; adjusting frequencies by using an equalizer technique to increase volume of the ring tone if the ring tone is the MP3 audio file; adjusting a volume level of the ring tone to be the highest volume level, and adjusting timbre of the ring tone to increase the ring tone volume by simulating a musical score of the ring tone by using different instruments if the ring tone is the MIDI audio file. A related system is also provided.

Abstract: An exemplary method for locating sound sources is disclosed. The method includes the steps of: loading a sound source location program into a handheld device; activating the sound source location program; calculating a total voltage representing sound waves received by a microphone array via a waveform computation algorithm; calculating energy intensities of the total voltage according to the total voltage; and selecting a maximum energy intensity from the calculated energy intensities, and determining the location of the maximum energy intensity, the location of the maximum energy intensity is the location of the sound source. A related system is also disclosed.

Abstract: A system for classifying multimedia data is provided. The system comprises a characteristic extracting unit configured for obtaining the multimedia data from the mobile apparatus, and extracting characteristics of multimedia data by using the MPEG-7; and a neural network model configured for predefining a training model, and classifying the multimedia data by classifying the characteristics according to the predefined training model. A related method is also provided.

Abstract: A portable electronic device (100) includes a main body (10) having at least one cavity (131) defined therein, at least one speaker device (20) being movable received in the cavity of the main body, and at least one latching mechanism (30) movably attached to the main body. The speaker device has a resonant chamber (28) defined therein, and a positioning stop member (262) extending therefrom. Each resonant chamber communicates with a corresponding cavity. The at least one latching mechanism includes a latching body (31), and the latching body is configured for selectably engaging with the positioning stop member to enable control of movement of a corresponding speaker device relative to the main body.

Abstract: A cutting tool adjustment method includes lowering a cutting tool on a transparent Mylar to produce an indentation before an actual scribing operation; picking up the image of the indentation; using a numerical analysis method and a set formula to automatically calculate a correction angle and position so as to adjust the angle and position of the cutting tool subject to the calculation result; and repeating the calculation and adjustment procedures, if necessary.

Abstract: A system that integrates various intelligent classification techniques and preprocessing algorithms is provided. A feature extracting unit receives audio signals and extracts audio features for identification by using various descriptors; a preprocessing unit normalized the data for data consistency; a classification unit classifying audio signals into several categories according to the audio features.

Abstract: A robotic vacuum cleaner is disclosed in the present invention, which comprises a controller, at least a driving wheel module, and a dust-collecting module. The controller is disposed on a housing plate. The driving wheel module, electrically connecting to the controller, further includes: a driver; a wheel connecting to the output shaft of the driver; a linkage rod, having two ends pivotally fixed on the housing plate and the driver respectively; and a resilience element, having two ends pivotally connected to the housing plate and the driver respectively. The dust-collecting module, disposed on the housing plate, is capable of vacuuming for filtering and collecting dust.