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In narrow-band speech coding, specifically in the low and ultra low bit-rate ranges, a series of efficient quantization of the LP parameters using fixed-length as well as variable-length segment quantization (VLSQ) have resulted in a progressive reduction in the bit-rate from the 2400 bits/sec baseline of the LPC-10 coder down to 300 bits/sec and less. The VLSQ framework forms a generic basis of a...
We address the problem of audio analytics with respect to efficient modeling of audio classes and continuous decoding of audio stream to automatically segment and label the audio stream as required in audio indexing. We propose the use of left-to-right HMMs and ergodic HMMs to respectively model definite and indefinite duration audio classes and Viterbi decoding using these HMMs with non-emitting...
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