Abstract: A sound effect processing method includes obtaining audio data in a scene; obtaining a display region and determining a target audio, the target audio including the audio data in the display region and the audio data in a region that is beyond the display region and within a threshold value; and playing the target audio. Audios in the area near the display region will be played if only the threshold value is positive, and discontinuous sound will not appear when the sounding object moves beyond and nearly the display region. In this solution, it's not necessary to process all audio data in the scene, instead of that, the audio playing region is controllable; thereby ensuring the sounding object can be sensed.

Abstract: This sound playing method relates to information processing field. After receiving a sound trigger command, the sound playing device determines the sound collection event corresponding to the sound trigger command. If all audio files included in the sound collection event are loaded in the memory of the sound playing device, the sound playing device directly plays the audio file corresponding to the sound collection event. The sound playing device does not load the audio file to the memory repeatedly, so as to reuse the audio files loaded in the memory, which reduces the memory usage and improves running efficiency of the applications or art animation effects.

Abstract: The present invention discloses a method for recognizing a handwritten character, which includes the following steps of: obtaining a coarse classification template and a fine classification template; receiving a handwritten character input signal from a user, gathering a discrete coordinate sequence of trajectory points of the inputted character, and pre-processing the discrete coordinate sequence; extracting eigenvalues and calculating a multi-dimensional eigenvector of the inputted character; matching the inputted character with the coarse classification template to select a plurality of the most similar candidate character classes; and matching the eigen-transformed inputted character with sample centers of the candidate character classes selected from the fine classification template, and determining the most similar character classes among the candidate character classes. The present invention further discloses a system for recognizing a handwritten character.

Abstract: A method for preparing carbon nanotubes for synthesizing carbon nanotubes, fabricating carbon nanotube films and electronic devices is provided. The method for preparing carbon nanotubes can repair the defects in side walls of carbon nanotubes under stable condition easily and prepare carbon nanotubes of excellent properties. The method utilizes uric acid solution or ammonia water to treat carbon nanotubes after acidifying the carbon nanotubes by refluxing with nitric acid. The treatment temperature is, for example, 25° C.˜90° C., and treatment time is at least two 2 days. Preferably, the carbon nanotubes are treated with thionyl chloride solution before being treated with uric acid solution or ammonia water.

Abstract: A method for manufacturing a conductive film composed of carbon nanotubes includes the steps of dispersing carbon nanotubes in a solution in which a perfluorosulfonate polymer is dissolved as a dispersant in a solvent; and filtering the solution in which the carbon nanotubes are dispersed.