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Signal bandwidth expansion method and user equipment

A technology of bandwidth expansion and signal bandwidth, which is applied in the field of signal bandwidth expansion methods and user equipment, can solve problems such as bad noise, and achieve the effect of reducing noise

Active Publication Date: 2014-07-09
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing technology uses the same bandwidth expansion method for different signal bandwidths, which is easy to introduce bad noise

Method used

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  • Signal bandwidth expansion method and user equipment
  • Signal bandwidth expansion method and user equipment
  • Signal bandwidth expansion method and user equipment

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Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0042] It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, general packet radio service (General Packet Radio Servic...

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Abstract

The embodiments of the invention provide a signal bandwidth expansion method and a piece of user equipment. The method comprises: receiving a first signal; determining the bandwidth of the first signal; determining a bandwidth expansion mode corresponding to the bandwidth of the first signal from multiple different bandwidth expansion modes; and according to the first signal and the expansion mode corresponding to the bandwidth of the first signal, generating a second signal, the bandwidth of the second signal being greater than the bandwidth of the first signal. The method, through determining the bandwidth of a signal and a bandwidth expansion mode corresponding to the bandwidth, enables the bandwidth expansion mode to match an actual bandwidth very well, thus noise caused by bandwidth expansion is reduced.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a signal bandwidth extension method and user equipment. Background technique [0002] In the current major telephone networks, such as the Public Switched Telephone Network (PSTN), the Global System of Mobile Communication (GSM) system or the Universal Mobile Telecommunications System (UMTS), the transmission of voice signals The bandwidth is limited to the range of 300Hz to 3.4kHz, which is called narrowband speech. However, with the gradual improvement of communication bandwidth, users have higher and higher requirements for voice quality and presence, and narrowband voice cannot meet user experience requirements. [0003] In the prior art, bandwidth extension technology is the main method for extending narrowband speech to wideband speech. Bandwidth extension technology is usually based on the linear source filter generation model, the algorithm model is divided in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L21/038
CPCG10L21/038
Inventor 王宾刘泽新苗磊
Owner HONOR DEVICE CO LTD