Patent
Speech decoder, speech encoder, speech decoding method, speech encoding method, speech decoding program, and speech encoding program
Kei Kikuiri,Yamaguchi Atsushi +1 more
- 16 Feb 2012
11
TL;DR: In this article, a speech decoder includes a demultiplexing unit (1a), a low frequency band decoding unit, a band splitting filter bank unit, and a coded sequence analysis unit.
read more
Abstract: A speech decoder (1) includes a demultiplexing unit (1a), a low frequency band decoding unit (1b), a band splitting filter bank unit (1c), a coded sequence analysis unit (1d), a coded sequence decoding / dequantization unit (1e), a high frequency band generation unit (1h), low frequency band time envelope calculation units (1f1 to 1fn) that acquire a plurality of low frequency band time envelopes, a time envelope calculation unit (1g) that calculates high frequency band time envelopes using time envelope information and the plurality of low frequency band time envelopes, a time envelope adjustment unit (1i) that adjusts the time envelope of high frequency band components using the time envelopes obtained by the time envelope calculation unit (1g), and a band synthesis filter bank unit (1j).
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Patent
Through gate fin isolation
Mark T. Bohr,Stephen M. Cea,Barbara A. Chappell +2 more
- 29 Jun 2012
TL;DR: In this paper, a single mask is employed to form a plurality of sacrificial placeholder stripes of a fixed pitch, a first subset of placeholder stripes is removed and isolation cuts made into the semiconductor fins in openings resulting from the first subset removal while a second subset of the placeholder stripes are replaced with gate electrodes.
64
Patent
Device and method for bandwidth extension for acoustic signals
Srikanth Nagisetty,Zongxian Liu +1 more
- 10 Jun 2014
TL;DR: In this article, the authors proposed a bandwidth extension encoding scheme for audio signal encoding and decoding, which identifies a low-frequency spectrum component having the highest correlation to a high-frequency bandwidth signal among input signals, duplicates a highfrequency spectrum by energy adjustment of said component, and maintains the harmonic relationship between the low frequency spectrum and the duplicated high frequency spectrum by adjusting the spectral peak position.
10
Patent
Audio decoding device, audio coding device, audio decoding method, audio coding method, audio decoding program, and audio coding program
Kei Kikuiri,Yamaguchi Atsushi +1 more
- 24 Oct 2014
TL;DR: In this paper, an audio decoding device which decodes a coded audio signal and outputs an audio signal comprises: a coded series analysis unit that analyzes the coded series which contains the coded audio signals, an audio decoder that decodes the coded signals and decodes same, and a temporal envelope correction unit that corrects the temporal envelope shape of the decoded signals.
8
Patent
Speech decoder, speech encoder, speech decoding method, speech encoding method
Kei Kikuiri,Yamaguchi Atsushi +1 more
- 16 Sep 2015
TL;DR: A speech decoder as discussed by the authors includes a demultiplexing unit (1a), a low frequency band decoding unit, a band splitting filter bank unit, and a coded sequence analysis unit.
2
Patent
Decoding device, encoding device, decoding method, encoding method, terminal device, and base station device
Takuya Kawashima,Hiroyuki Ehara +1 more
- 06 Feb 2015
TL;DR: In this article, the amplitude normalization unit is used to normalize the amplitude of the core decoded spectrum, obtained by decoding the core encoded data, by the largest value of the amplitude this article.
1
References
Patent
Source coding enhancement using spectral-band replication
Liljeryd Lars Gustaf,Ekstrand Per Rune Albin,Henn Lars Fredrik,Hans Magnus Kristofer Kjorling +3 more
- 09 Jun 1998
TL;DR: In this article, the authors proposed a new method and apparatus for the enhancement of source coding systems, which employs bandwidth reduction (101) prior to or in the encoder, followed by spectral-band replication (105) at the decoder.
488
Patent
Systems, methods, and apparatus for gain coding
Vos Koen Bernard,Kandhadai Ananthapadmanabhan A +1 more
- 03 Apr 2006
TL;DR: In this paper, a wideband speech encoder with a lowband and a highband encoder is described, where the highband is configured to calculate values for coding parameters that specify a spectral envelope and a temporal envelope.
48
Patent
Efficient Temporal Envelope Coding Approach by Prediction Between Low Band Signal and High Band Signal
Yang Gao
- 25 Sep 2012
TL;DR: In this article, a more efficient way to quantize temporal envelope shaping of high band signals by benefiting from energy relationship between low band signal and high band signal was proposed, which can bring significant saving of bits.
48
Patent
Method and apparatus for encoding and decoding
Deepen Sinha,Aníbal Ferreira,Erumbi Vallabhan Harinarayanan +2 more
- 06 Oct 2006
TL;DR: In this paper, a bandwidth extension technique allows information to be encoded and decoded using a fractal self similarity model or an accurate spectral replacement model, or both, and a multi-band temporal amplitude coding technique, useful as an enhancement to any coding/decoding technique, helps with accurate reconstruction of the temporal envelope.
43
Patent
Speech encoding device, speech decoding device, speech encoding method, speech decoding method, speech encoding program, and speech decoding program
Kosuke Tsujino,Kei Kikuiri,Nobuhiko Naka +2 more
- 02 Apr 2010
TL;DR: In this paper, a linear prediction coefficient of a signal represented in a frequency domain is obtained by performing linear prediction analysis in the frequency direction by using a covariance method or an autocorrelation method.
36