Abstract:
PURPOSE: A synchronization system for transmitting audible frequency band acoustic communication and method thereof are provided to prevent the deterioration of synchronization capability and to obtain various sample units. CONSTITUTION: A transmitter(100) converts the time axis signal of an audio signal into a frequency axis signal according to the conversion of a first mode. The transmitter varies the phase of preset frequency corresponding to synchronizing data. The transmitter converts an audio signal of a frequency axis signal to a time axis signal according to a first reverse conversion method. A receiver(200) converts an audio signal of a reversely converted time axis signal into a frequency axis signal according to a second reverse conversion method. The receiver determines a synchronization location from a correlation value.
Abstract:
PURPOSE: A method for combining sounds of a statistical speech combining system using a switching linear dynamic system is provided to apply a voice database and a switching linear dynamic system which learns an existing education system, thereby combining voices. CONSTITUTION: A system learns a statistical model from a voice database. The system learns a system parameter of a switching linear dynamic system using an ML(Maximum Likelihood) method(S100). The system selects a statistical model and a converter corresponding to an input sentence or an input word. The system uses a learnt statistical model value as an input value. The system combines voices which are from a combined feature vector of the switching linear dynamic system(S200).
Abstract:
Provided is a synchronization system and method for acoustic communication in audible frequency range, and an apparatus applied thereto. The synchronization system for acoustic communication in audible frequency range is configured to prevent deterioration of a synchronization performance and to reduce an amount of calculation by calculating a correlation based on a few samples as opposed to calculating a correlation for each sample when a receiver of the acoustic communication performs synchronization while the acoustic communication is performed in the audible frequency range through modification of an audio signal or adding of a predetermined signal to an audio signal.
Abstract:
PURPOSE: Legs for a robot and a robot having the same are provided to instantaneously transfer impact because legs are adjusted at the same time while legs are swung with respect to a robot body through first and second members and a crank structure. CONSTITUTION: Legs(100) for a robot comprises first and second members(10,20), a crankshaft(31), a crank arm(32), and a connection rod(34). The first member is joined to a body of a robot to be rotated. The second member is joined to the first member and linearly reciprocates. The crankshaft is joined to be rotated with respect to the first member. One end part of the connecting rod is joined to the other end part of the crank arm to be rotated and the other end part of the connecting rod is joined to be rotated with respect to the second member.