| Paper: | AE-P3.8 | ||
| Session: | Broadband Coding, Perceptual Coding, and Auditory Modeling | ||
| Time: | Thursday, May 20, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Audio and Electroacoustics: Broadband and Perceptual Coding | ||
| Title: | MULTI-VARIATE BLOCK POLAR QUANTIZATION AND AN APPLICATION TO AUDIO | ||
| Authors: | Harald Pobloth; Royal Institute of Technology (KTH) | ||
| Renat Vafin; Royal Institute of Technology (KTH) | |||
| W. Bastiaan Kleijn; Royal Institute of Technology (KTH) | |||
| Abstract: | In this article we introduce multi-variate block polar quantization (MBPQ). MBPQ minimizes a weighted distortion for a set of complex variables representing one block of a signal under a resolution constraint for the entire block. MBPQ allows for different probability distributions in different dimensions of the set of complex variables. It outperforms an earlier introduced block polar quantizer and unrestricted polar quantization (UPQ) both for Gaussian complex variables and for sinusoids found from audio data. In the case of audio data we found a performance gain of about 2.5 dB over the best performing conventional resolution-constrained polar quantization (UPQ). | ||
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