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Time Domain Inter-Channel Prediction

An inter-prediction and channel technology, applied in speech analysis, instruments, etc.

Active Publication Date: 2020-12-01
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, the second audio signal received from the second microphone may be delayed relative to the first audio signal received from the first microphone due to the corresponding distance of the microphone from the sound source

Method used

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  • Time Domain Inter-Channel Prediction
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  • Time Domain Inter-Channel Prediction

Examples

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Embodiment Construction

[0017] Certain aspects of the invention are described below with reference to the drawings. In this specification, common components are indicated by common reference numerals. As used herein, various terms are used for the purpose of describing particular embodiments only and are not intended to be limiting of the embodiments. For example, the singular forms "a", "an" and "the" are intended to include the plural forms as well unless the context clearly dictates otherwise. It will be further understood that the terms "comprises and comprising" may be used interchangeably with "includes or including". Additionally, it should be understood that the term "wherein" may be used interchangeably with "where". As used herein, ordinal terms (e.g., "first," "second," "third," etc.) used to modify an element such as structure, component, operation, etc., do not by themselves indicate any priority of the element with respect to another element. Rather, they simply distinguish an elemen...

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Abstract

The present disclosure provides a method comprising decoding a low-band portion of an encoded intermediate channel to produce a decoded low-band intermediate channel. The method also includes filtering the decoded low-band intermediate channel according to one or more filter coefficients to produce a low-band filtered intermediate channel. The method also includes generating an inter-channel prediction signal based on the low-band filtered intermediate channel and an inter-channel prediction gain. The method further includes generating a low-band left channel and a low-band right channel based on an upmix factor, the decoded low-band middle channel, and the inter-channel prediction signal.

Description

[0001] priority claim [0002] This application claims the benefit of priority to commonly owned U.S. Provisional Patent Application No. 62 / 528,378, filed July 3, 2017, and U.S. Nonprovisional Patent Application No. 16 / 003,704, filed June 8, 2018 , each of which is incorporated herein by reference in its entirety. technical field [0003] The invention generally relates to the encoding of a plurality of audio signals. Background technique [0004] Advances in technology have resulted in smaller and more powerful computing devices. For example, a variety of portable personal computing devices, including wireless telephones such as mobile and smart phones, tablet computers, and laptop computers, are small, lightweight, and easily carried by users. These devices communicate voice and data packets over a wireless network. In addition, many such devices incorporate additional functionality, such as digital still cameras, digital video cameras, digital recorders, and audio fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/008G10L21/038
CPCG10L21/038G10L19/008G10L19/005G10L19/0204G10L19/26
Inventor V·阿提V·S·C·S·奇比亚姆D·J·辛德尔
Owner QUALCOMM INC