Low Complexity Search Method for G.723.1 MP-MLQ Algorithm

Lin, Rong-San; Chen, Y.C.; Chen, F.K.

doi:10.1109/isda.2008.203

Cited by 5 publications

(4 citation statements)

References 7 publications

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“…iPSC embryoid body analysis iPSC embryoid body formation and characterization were performed as previously described with modifications (Lin and Chen, 2008). Briefly, iPSCs were cultured in mTeSR1 medium on Matrigel-coated plates, and the medium was changed daily.…”

Section: Alkaline Phosphatase Stainingmentioning

confidence: 99%

Transcriptomic landscape of human induced pluripotent stem cell-derived osteogenic differentiation identifies a regulatory role of KLF16

Ru,

Ma,

Zhou

et al. 2024

Preprint

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Osteogenic differentiation is essential for bone development and metabolism, but the underlying gene regulatory networks have not been well investigated. We differentiated mesenchymal stem cells, derived from 20 human induced pluripotent stem cell lines, into preosteoblasts and osteoblasts, and performed systematic RNA-seq analyses of 60 samples for differential gene expression. We noted a highly significant correlation in expression patterns and genomic proximity among transcription factor (TF) and long noncoding RNA (lncRNA) genes. We identified TF-TF regulatory networks, regulatory roles of lncRNAs on their neighboring coding genes for TFs and splicing factors, and differential splicing of TF, lncRNA, and splicing factor genes. TF-TF regulatory and gene co-expression network analyses suggested an inhibitory role of TF KLF16 in osteogenic differentiation. We demonstrate that in vitro overexpression of human KLF16 inhibits osteogenic differentiation and mineralization, and in vivo Klf16+/- mice exhibit increased bone mineral density, trabecular number, and cortical bone area. Thus, our model system highlights the regulatory complexity of osteogenic differentiation and identifies novel osteogenic genes.

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Section: Alkaline Phosphatase Stainingmentioning

confidence: 99%

Transcriptomic landscape of human induced pluripotent stem cell-derived osteogenic differentiation identifies a regulatory role of KLF16

Ru,

Ma,

Zhou

et al. 2024

Preprint

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“…Previously, we proposed a fast search algorithm to reduce computational complexity of the MP-MLQ search algorithm [16]. In this algorithm, we estimated candidate pulse positions and used a single multi-track structure instead of the original MP-MLQ structure to reduce the number of combinations of possible pulse positions.…”

Section: Multi-track Fast Mp-mlq Searchmentioning

confidence: 99%

“…Jung's proposed codebook structure arrangement could lose significant excitation pulse at the last track. Lin et al, [16] provided a search method to reduce the computation required of MP-MLQ and Chen et al, [17] provided two complexity scalability approaches to reduce the computation requirements of the ACELP and MP-MLQ.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Candidate Scheme for Fast Codebook Search in G.723.1

Lin

Wang

2012

IEICE Trans. Inf. & Syst.

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SUMMARYIn multimedia communication, due to the limited computational capability of the personal information machine, a coder with low computational complexity is needed to integrate services from several media sources. This paper presents two efficient candidate schemes to simplify the most computationally demanding operation, the excitation codebook search procedure. For fast adaptive codebook search, we propose an algorithm that uses residual signals to predict the candidate gain-vectors of the adaptive codebook. For the fixed codebook, we propose a fast search algorithm using an energy function to predict the candidate pulses, and we redesign the codebook structure to twin multi-track positions architecture. Overall simulation results indicate that the average perceptual evaluation of speech quality (PESQ) score is degraded slightly, by 0.049, and our proposed methods can reduce total computational complexity by about 67% relative to the original G.723.1 encoder computation load, and with perceptually negligible degradation. Objective and subjective evaluations verify that the more efficient candidate schemes we propose can provide speech quality comparable to that using the original coder approach.

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