Invention Grant
- Patent Title: Determining an upperband signal from a narrowband signal
- Patent Title (中): 从窄带信号确定上位带信号
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Application No.: US12910564Application Date: 2010-10-22
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Publication No.: US08484020B2Publication Date: 2013-07-09
- Inventor: Venkatesh Krishnan , Daniel J. Sinder , Ananthapadmanabhan Arasanipalai Kandhadai
- Applicant: Venkatesh Krishnan , Daniel J. Sinder , Ananthapadmanabhan Arasanipalai Kandhadai
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Heejong Yoo
- Main IPC: G10L19/00
- IPC: G10L19/00 ; G10L19/14 ; G10L19/12
Abstract:
A method for determining an upperband speech signal from a narrowband speech signal is disclosed. A list of narrowband line spectral frequencies (LSFs) is determined from the narrowband speech signal. A first pair of adjacent narrowband LSFs that have a lower difference between them than every other pair of adjacent narrowband LSFs in the list is determined. A first feature that is a mean of the first pair of adjacent narrowband LSFs is determined. Upperband LSFs are determined based on at least the first feature using codebook mapping.
Public/Granted literature
- US20110099004A1 DETERMINING AN UPPERBAND SIGNAL FROM A NARROWBAND SIGNAL Public/Granted day:2011-04-28
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