公开(公告)号：US20070005351A1

公开(公告)日：2007-01-04

申请号：US11171608

申请日：2005-06-30

申请人： Harsha Sathyendra ,  Ismail Uysal ,  John Harris ,  Marc Boillot

发明人： Harsha Sathyendra ,  Ismail Uysal ,  John Harris ,  Marc Boillot

IPC分类号： G10L19/12

CPC分类号： G10L21/038

摘要： The invention concerns a method (400) and system (100) for bandwidth extension of voice for improving the quality of voice in a communication system. The method can include the steps of receiving (412) an unknown voice signal (105), identifying (414) the voice bandwidth (625) of the received unknown voice signal and establishing (418) a region of support (636) in view of the spectral content of the received voice signal. The method can further include the step of selecting (428) a combination of mapping databases (210, 212, 214) from a plurality of mapping databases. Each mapping database can be associated with a predetermined bandwidth extension range for extending the voice bandwidth.

摘要翻译： 本发明涉及用于提高通信系统中的语音质量的语音的带宽扩展的方法（400）和系统（100）。 该方法可以包括以下步骤：接收（412）未知语音信号（105），识别（414）所接收的未知语音信号的语音带宽（625），并建立（418）支持区域（636） 接收的语音信号的频谱内容。 该方法还可以包括从多个映射数据库中选择（428）映射数据库（210,212,214）的组合的步骤。 每个映射数据库可以与用于扩展语音带宽的预定带宽扩展范围相关联。

公开(公告)号：US10849526B1

公开(公告)日：2020-12-01

申请号：US15783643

申请日：2017-10-13

申请人： Ali Fatih Demir ,  Ismail Uysal ,  Huseyin Arslan

发明人： Ali Fatih Demir ,  Ismail Uysal ,  Huseyin Arslan

IPC分类号： A61B5/0484 ,  A61B5/04 ,  A61B5/00

摘要： A system and method of steady-state visual evoked potential (SSVEP) frequency detection using bio-inspired filter banks (BIFB) includes, acquiring electroencephalographic (EEG) signals from a subject in response to a repetitive visual stimulus, estimating the power spectral density (PSD) of the channel of the EEG signals including at least one SSVEP response, extracting one or more SSVEP response features from the estimated PSD of the channel using a bio-inspired filter bank (BIFB) and classifying the extracted SSVEP response features to determine if the detected SSVEP response frequency from the EEG signals acquired from the subject substantially matches the repetition frequency of the repetitive visual stimulus.