Skip to main content
EURASIP Journal on Audio, Speech, and Music Processing
Figure 5 | EURASIP Journal on Audio, Speech, and Music Processing

Figure 5

From: Adaptive Long-Term Coding of LSF Parameters Trajectories for Large-Delay/Very- to Ultra-Low Bit-Rate Speech Coding

Figure 5

Average spectral distortion (ASD) as a function of the average bit rate, calculated on the whole voiced test database, and for LSF optimal LT coding (continuous line, black points, on the left); Frame-by-frame LSF quantization (continuous line, black points, on the right); 2D-DCT transform coding (dashed lines, grey circles) for, from top to bottom, K = 2, 5, 10, and 20; adaptive 2D-DCT transform coding (continuous line, grey circles); and adaptive 2D-KLT transform coding (continuous line, grey diamonds).

Back to article page