Abstract:
Provided are methods and systems for acoustic keystroke transient cancellation/suppression for user communication devices using a semi-blind adaptive filter model. The methods and systems are designed to overcome existing problems in transient noise suppression by taking into account some less-defective signal as side information on the transients and also accounting for acoustic signal propagation, including the reverberation effects, using dynamic models. The methods and systems take advantage of a synchronous reference microphone embedded in the keyboard of the user device, and utilize an adaptive filtering approach exploiting the knowledge of this keybed microphone signal.
Abstract:
The invention provides a computer system for interacting with a user. A set of concepts initially forms a target set of concepts. An input module receives a language input from the user. An analysis system executes a plurality of narrowing cycles until a concept packet having at least one concept has been identified. Each narrowing cycle includes identifying at least one portion of the language and determining a subset of concepts from the target set of concepts to form a new target subset. An action item identifier identifies an action item from the action items based on the concept packet. An action executer that executes an action based on the action item that has been identified.
Abstract:
A method and apparatus for adapting acoustic processing in a communication device (102), and capturing (302) at least one acoustic signal using acoustic hardware (218, 224) of the communication device (102), characterizing (304) an acoustic environment external to the communication device (102) using the at least one captured acoustic signal, adapting (306) acoustic processing within the communication device (102) based on the characterized acoustic environment.
Abstract:
Disclosed are a signal-separation system using a directional microphone array and a method for providing same. The signal-separation system comprises: a signal-receiving unit which receives a mixture signal, in which a first audio signal and a second audio signal are mixed, using a microphone array comprising: at least one first microphone installed in a first direction, and at least one second microphone installed in a direction different from the first direction, and then receives a reference signal through said at least one second microphone; and an audio-signal separation unit for canceling out the second audio signal in the mixture signal received by the signal-receiving unit. The audio-signal separation unit cancels out the second audio signal using the reference signal input through said at least one second microphone.
Abstract:
방향성 마이크 어레이를 이용한 신호 분리시스템 및 그 제공방법이 개시된다. 상기 제1방향을 향하도록 설치되는 적어도 하나의 제1마이크 및 상기 제1방향과는 다른 방향을 향하도록 설치되는 적어도 하나의 제2마이크를 포함하는 마이크 어레이를 이용하여 제1음성신호와 제2음성신호가 혼합된 혼합신호를 수신하고, 상기 적어도 하나의 제2마이크를 통해 레퍼런스 신호를 수신하기 위한 신호수신부, 상기 신호수신부에 의해 수신된 혼합신호에서 상기 제2음성신호를 상쇄하기 위한 음성신호 분리부를 포함하며, 상기 음성신호 분리부는 상기 적어도 하나의 제2마이크를 통해 입력된 상기 레퍼런스 신호를 이용하여 상기 제2음성신호를 상쇄하는 것을 특징으로 한다.
Abstract:
A headset system is proposed including a headset unit to be worn by a user and having two or more microphones, and a base unit in wireless communication with the headset. Signals received from the microphones are processed using a first adaptive filter to enhance a target signal, and then divided and supplied to a second adaptive filter arranged to reduce interference signals and a third filter arranged to reduce noise. The outputs of the second and third filters are combined, and are be subject to further processing in the frequency domain. The results are transmitted to a speech recognition engine.
Abstract:
A method of performing noise reduction includes capturing a first audio signal at a first microphone of a first device. The method also includes receiving, at the first device, audio data representative of a second audio signal from a second device. The second audio signal is captured by a second microphone of the second device. The method further includes performing noise reduction on the first audio signal based at least in part on the audio data representative of the second audio signal.
Abstract:
An acoustic input module and an electronic device including the same are provided. The acoustic input module of the electronic device includes a plurality of transducers mounted on one surface of a circuit board, a control module mounted on the circuit board for controlling the transducers, and a plurality of sound input holes formed in a housing of the electronic device. A first transducer receives a sound along a first directional path through a first sound input hole and converts the received sound into an electrical signal, and a second transducer receives a sound along a second directional path through a second sound input hole and converts the received sound into an electrical signal. Since the transducers detect sounds originating along different paths, the electronic device can include a multi-channel recording function with an ability to reinforce sound of a specific object and attenuate other sound.
Abstract:
An apparatus comprises microphone receivers (101) which receive microphone signals from a plurality of microphones (103). A comparator (105) determines a speech similarity indication indicative of a similarity between the microphone signal and non-reverberant speech for each microphone signal. The determination is in response to a comparison of a property derived from the microphone signal to a reference property for non- reverberant speech. In some embodiments, the comparator (105) determines the similarity indication by comparing to reference properties for speech samples of a set of non- reverberant speech samples. A generator (107) generates a speech signal by combining the microphone signals in response to the similarity indications. In many embodiments, the apparatus may be distributed over a plurality of devices each containing a microphone, and the approach may determine the most suited microphone for generating the speech signal.