Patent №
US 9,704,478
Granted
2017-07-11
Filed 2013
Owner
AMAZON TECHNOLOGIES, INC.
Lab
AI components
3
ml · nlp · speech
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
14094591
Features are disclosed for filtering portions of an output audio signal in order to improve automatic speech recognition on an input signal which may include a representation of the output signal. A signal that includes audio content can be received, and a frequency or band of frequencies can be selected to be filtered from the signal. The frequency band may correspond to a desired frequency band for speech recognition. An input signal can be obtained comprising audio data corresponding to a user utterance and presentation of the output signal. Automatic speech recognition can be performed on the input signal. In some cases, an acoustic model trained for use with such frequency band filtering may be used to perform speech recognition.
AI classification
Ownership
AMAZON TECHNOLOGIES, INC.
assignment · 341110498
Assignors
VITALADEVUNI, SHIV NAGA PRASAD, PRASAD, ROHIT, CHHETRI, AMIT SINGH, HILMES, PHILLIP RYAN
On an employer assignment, the assignors are typically the inventors.