Bandwidth extension of telephone speech using magnitude spectrum data hiding

2017 ◽  
Vol 20 (1) ◽  
pp. 151-162 ◽  
Author(s):  
Prasad Nizampatnam ◽  
Kishore Kumar Tappeta
Keyword(s):  
Data Hiding ◽  
Bandwidth Extension ◽  
Magnitude Spectrum ◽  
Telephone Speech ◽  
Spectrum Data

Advanced Information Hiding for G.711 Telephone Speech

2013 ◽  
pp. 129-163 ◽  
Author(s):  
Akinori Ito ◽  
Yôiti Suzuki
Keyword(s):  
Data Hiding ◽  
Side Information ◽  
Low Complexity ◽  
Speech Quality ◽  
Rate Data ◽  
Bit Rate ◽  
Bandwidth Extension ◽  
Low Bit Rate ◽  
Speech Codec ◽  
Popular Speech

G.711 is the most popular speech codec for Voice over IP (VoIP). This chapter proposes a method for embedding data into G.711-coded speech for conveying side information for enhancing speech quality such as bandwidth extension or packet loss concealment. The proposed method refers to a low-bit rate encoder to determine how many bits are embedded into each sample. First, a variable-bit rate data hiding method is proposed as a basic framework of the proposed method. Then, the proposed method is extended to achieve fixed bit rate data hiding. According to comparison experiments, the proposed method is proved to achieve higher speech quality compared with the conventional method. Moreover, the authors developed a low-complexity speech bandwidth extension method that uses the proposed data hiding method.

scholarly journals Steganalysis of spread spectrum data hiding exploiting cover memory

2005 ◽  
Author(s):  
Kenneth Sullivan ◽  
Upamanyu Madhow ◽  
Shivkumar Chandrasekaran ◽  
Bangalore S. Manjunath
Keyword(s):  
Data Hiding ◽  
Spread Spectrum ◽  
Spectrum Data
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