HYBRID CODING SCHEME FOR ARTIFICIAL BANDWIDTH EXTENSION OF NARROWBAND MP3 SPEECH

Abstract

As the broadband speech communication unites the whole world newlinetogether and with all the speech communication / storage of data on earth going newlinedigital, new challenges and courageous for innovation have unfastened up. For newlineefficient utilization of transmission bandwidth cost and decreasing prices of newlinedigital devices in speech based communication (telephone communication / newlineVoice over Internet Protocol / Storage of digital audio), narrowband newlinerepresentation of the signal is generally used. This band-limited signal can able newlineto represent the vowel sounds without much distortion, but is not suitable for newlinerepresenting consonant sounds, mainly fricative consonants (Isl, /sh/,/ch/, xl, newline/th/, etc.). newlineA possibility of enhancement of speech quality in digital domain newline(Spatial expansion and spectral expansion) has made by Artificial Band width newlineExtension (ABE)