Unlock instant, AI-driven research and patent intelligence for your innovation.

Systems and methods for reconstructing an erased speech frame

A voice frame, frame erasure technology, applied in transmission systems, speech analysis, digital transmission systems, etc., can solve problems such as quality degradation

Active Publication Date: 2014-05-07
QUALCOMM INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lost packets can degrade the quality of synthesized speech

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Systems and methods for reconstructing an erased speech frame
  • Systems and methods for reconstructing an erased speech frame
  • Systems and methods for reconstructing an erased speech frame

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Voice applications can be implemented in packet-switched networks. Packets with voice information may be transmitted over the network from the first device to the second device. However, some of the packets may be lost during transmission of the packets. In one configuration, voice information (ie, speech) may be organized in speech frames. A packet may include one or more speech frames. Each speech frame may be further divided into subframes. These arbitrary frame boundaries may be used where a certain block of processing is performed. However, the speech samples cannot be partitioned into frames (and sub-frames) if continuous processing rather than block processing is implemented. The loss of multiple speech frames (sometimes referred to as burst loss) may be the cause of perceived speech quality degradation at the receiving device. In the described example, each packet transmitted from the first device to the second device may include one or more frames dependin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A method for reconstructing an erased speech frame is described. A second speech frame is received from a buffer. The index position of the second speech frame is greater than the index position of the erased speech frame. The type of packet loss concealment (PLC) method to use is determined based on one or both of the second speech frame and a third speech frame. The index position of the third speech frame is less than the index position of the erased speech frame. The erased speech frame is reconstructed from one or both of the second speech frame and the third speech frame.

Description

technical field [0001] The system and method of the present invention relate to communication and wireless related technologies. In particular, the systems and methods of the present disclosure relate to systems and methods for reconstructing erased speech frames. Background technique [0002] Digital voice communications have been performed over circuit-switched networks. A circuit-switched network is a network in which a physical path is established between two terminals for the duration of a call. In circuit-switched applications, a transmitting terminal sends a sequence of packets containing voice information to a receiving terminal on the physical path. The receiving terminal synthesizes speech using the speech information contained in the packet. [0003] Digital voice communications have begun to be performed over packet-switched networks. A packet-switched network is one in which packets are routed through the network based on destination address. With packet-sw...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G10L19/005H04N19/89
CPCG10L19/005H03M13/00H04L1/00H04N19/89
Inventor 方正丹尼尔·J·辛德尔阿南塔帕德玛纳班·阿拉桑尼帕莱·坎迪哈代
Owner QUALCOMM INC