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Joint optimization of short-term and long-term predictors in CELP speech coders

H. Zarrinkoub, P. Mermelstein
2003 2003 International Conference on Multimedia and Expo. ICME '03. Proceedings (Cat. No.03TH8698)  
We propose a new joint optimization method based on Wiener filtering.  ...  Our approach to joint optimization is based on analysis-by-synthesis and guarantees the synthesis filter stability.  ...  First, a classical LPC analysis optimizes the LPC filter and then based on an analysis by synthesis approach the adaptive and the fixed components of the excitation are optimized.  ... 
doi:10.1109/icme.2003.1220934 dblp:conf/icmcs/ZarrinkoubM03 fatcat:l2u5c45jhrfnjgtxz4guiixgru

Super-Wideband Spectral Envelope Modeling for Speech Coding

Guillaume Fuchs, Chamran Ashour, Tom Bäckström
2019 Interspeech 2019  
However, existing speech coders still employ a limited band source-filter model extended by parametric coding of the higher band.  ...  In the present work, a superwideband source-filter model running at 32 kHz is considered and especially its spectral magnitude envelope modeling.  ...  The purpose of this work is to study the feasibility of extending Code-Excited Linear Prediction (CELP), the most common coding scheme based on the source-filter model, to SWB speech, and to avoid the  ... 
doi:10.21437/interspeech.2019-1620 dblp:conf/interspeech/FuchsAB19 fatcat:b2y7tsghdvg2vlkm4ujvhpjw5u

Audio Hiding based on Wavelet Transform and Linear Predictive Coding

Jamal Hasoon, Saad Al-Saad
2016 Iraqi Journal for Computers and Informatics  
Discrete Wavelet Transform (DWT) is applied on audio frames to split the signal in high andlow frequencies. The embedding parameters are embedded in high frequency.  ...  In this work an efficient method for hiding a speech in audio is proposed.  ...  Conclusion This work presents a speech steganography algorithm base on: 1. LPC as good tools for speech coding. It gives a low bit rate (about 2.4 kbps).  ... 
doi:10.25195/ijci.v42i1.81 fatcat:h6ldefx5fjg2bfba66du7c6s2u

Strategies to improve the performance of very low bit rate speech coders and application to a variable rate 1.2 kb/s codec

R.C. de Lamare, A. Alcaim
2005 IEE Proceedings - Vision Image and Signal Processing  
The encoding algorithm is based on several improvements in a mixed multiband excitation (MMBE) linear predictive coding (LPC) structure.  ...  This strategy is shown to provide good quality synthesised speech, at a bit rate of only 0.4 kb/s for unvoiced frames.  ...  is the inverse of the synthesis filter and fa i g is the set of LPC parameters.  ... 
doi:10.1049/ip-vis:20051189 fatcat:fcuixvg5orcefgr56ebgk2yblq

Perceptual quantisation of LPC excitation parameters

W.-W. Chang, D.-Y. Wang
1998 IEE Proceedings - Vision Image and Signal Processing  
This LPC coder features a sinusoidal excitation model and adaptive bit-allocation based on a mask-tonoise ratio perceptual measure.  ...  Quantisation of LPC and excitation parameters is also examined.  ...  I LPC parameters For our study, a 10th order LPC analysis was chosen to characterise the spectral envelope information of the incoming sound.  ... 
doi:10.1049/ip-vis:19981676 fatcat:gnhkjoob35dyrfabav5hfyzjxy

Spoken Digit Compression: A Comparative Study Between Discrete Wavelet Transforms And Linear Predictive Coding

Shijo M Joseph, Firoz A Shah, Babu P Anto
2010 International Journal of Computer Applications  
We used Malayalam one of the south Indian language for this experiment. We could successfully compress and reconstruct Malayalam spoken words with perfect audibility using LPC and db4 wavelets.  ...  In modern world communication service providers are continuously met with the challenge of accommodating more users with in a limited allocated bandwidth.  ...  Therefore, either white noise or impulse train becomes the excitation of the LPC synthesis filter.  ... 
doi:10.5120/1085-1415 fatcat:c3yih6j2aven5e5r4c7gvazvza

Performance Comparison of Linear Prediction based Vocoders in Linux Platform
English

Lani Rachel Mathew, Ancy S. Anselam, Sakuntala S. Pillai
2014 International Journal of Engineering Trends and Technoloy  
After finding the short term LPC coefficients, each frame is split into four subframes, i.e. 7.5 ms each, which are given as input to the long-term prediction filter.  ...  This unaccounted residual output of the LPC coder contains important data on how the sound signal is perceived by the human auditory system. A.  ... 
doi:10.14445/22315381/ijett-v10p310 fatcat:rwckpkrbpnctpjfkylehrrs2oe

An Efficient Compression Method of Underwater Acoustic Sensor Signals for Underwater Surveillance

Yong Guk Kim, Dong Gwan Kim, Kyucheol Kim, Chang-Ho Choi, Nam In Park, Hong Kook Kim
2022 Sensors  
In the design of the proposed method, we adopt the concepts of quadrature mirror filter (QMF)-based sub-band splitting and linear predictive coding, and we attempt to analyze an entropy coding technique  ...  and structural similarity (SSIM) index on average.  ...  In this paper, we design a two-band QMF analysis and synthesis filter with a finite-duration impulse response (FIR) filter with an order of 127.  ... 
doi:10.3390/s22093415 fatcat:4p5ciauklbe6deq3znhpygq3nm

Audio inpainting of music by means of neural networks [article]

Andrés Marafioti, Nicki Holighaus, Piotr Majdak, Nathanaël Perraudin
2022 arXiv   pre-print
Our results were compared to those obtained from a reference method based on linear predictive coding (LPC).  ...  We studied the ability of deep neural networks (DNNs) to restore missing audio content based on its context, a process usually referred to as audio inpainting.  ...  The study aims at showing general abilities of a neural network working on TF coefficients as a context encoder.  ... 
arXiv:1810.12138v3 fatcat:ixn4uxfy35haxbkumpjunmgcha

Phrases From {P}Aul {L}Ansky'S {S}Ix {F}Antasies

Andreas Bergsland
2011 Zenodo  
The Six Fantasies Machine (SFM) is a software instrument that simulates sounds from Paul Lansky's classic computer music piece from 1979, Six Fantasies on a Poem by Thomas Campion.  ...  Moreover, the instrument will give the user hands-on experience with processing techniques that the composer applied, albeit with a user-friendly interface.  ...  There have been some examples of studies that use a methodology not too far from what Godøy suggests.  ... 
doi:10.5281/zenodo.1177959 fatcat:yas4ynxcdzcttaarraeumhqhge

A Comparative Study of Speech Coding Techniques for Electro Larynx Speech Production

Zinah J. Mohammed, Abdulkareem A. Kadhim
2022 Iraqi Journal of Information & Communications Technology  
A number of speech coding methods already developed and various speech coding algorithms for speech analysis and synthesis are used.  ...  Speech coding is a method of earning a tight speech signals representation for efficient storage and efficient transmission over band limited wired or wireless channels.  ...  The parameters of the synthesis LPC filter are calculated for each frame followed by defining the excitation signal of this filter.  ... 
doi:10.31987/ijict.5.1.185 fatcat:red25zyztzhe3e2adgrt7pt4cu

An Efficient Time Domain Speech Compression Algorithm Based on LPC and Sub-Band Coding Techniques

Palaniandavar Venkateswaran, Arindam Sanyal, Snehasish Das, Rabindranath Nandi, Salil Kumar Sanyal
2009 Journal of Communications  
on a digital signal processor.  ...  In this paper, two well known algorithms, LPC (Linear Predictive Coding) and subband coding are combined to reduce data transmission rate from 128 Kbps to as low as 12 Kbps at minimum complexity and implemented  ...  Receiver (Synthesis Section) Fig. 2 . 2 Prediction-error filter Fig. 3 . 3 a. Filter characteristics of low pass filter created with C5416 Processor Fig.3.b.  ... 
doi:10.4304/jcm.4.6.423-428 fatcat:if34a47mrrem7k3gaatzjuijny

New Robust LPC-Based Method for Time-resolved Morphology of High-noise Multiple Frequency Signals

Jin Xu, Mark Davis, Ruairi de Frein
2020 2020 31st Irish Signals and Systems Conference (ISSC)  
The method is based on a z-plane analysis of the poles of the LPC filter which allows us to identify and to accurately estimate the frequency of the dominant spectral features.  ...  This paper introduces a new time-resolved spectral analysis method based on the Linear Prediction Coding (LPC) method that is particularly suited to the study of the dynamics of low Signal-to-noise Ratio  ...  spectrum response of LPC synthesis filter H (z) can approximate the dominant spectrum as shown in Fig. 2.  ... 
doi:10.1109/issc49989.2020.9180212 fatcat:52bbkyulvrdvxoqpjqpoc6sppe

Linear Predictive Coding for Speech Compression

Yasir Saleem, Faisal Hayat, Arslan Iqbal
2014 Mehran University Research Journal of Engineering and Technology  
The objective of this project is the development of a LPC (Linear Predictive Coding) based voice coder.  ...  LPC filter is analyzed and its model is implemented. LPC's different attributes complexity, delay and bitrate are deliberated and tradeoffs are highlighted.  ...  The common algorithm for LPC is based on an encoding (analysis) part and a decoding (synthesis) part.  ... 
doaj:c3d0e7ed33f347ab9eb1fdc78a361f9f fatcat:4ig6u4533rddxizgwcr5orrz3u

Perceptual and Bitrate-Scalable Coding of Haptic Surface Texture Signals

Rahul Chaudhari, Clemens Schuwerk, Mojtaba Danaei, Eckehard Steinbach
2015 IEEE Journal on Selected Topics in Signal Processing  
signals. where he is currently a Full Professor for Media Technology.  ...  Simultaneous masking is a perceptual phenomenon widely exploited in the compression of audio data.  ...  filter excitation LPC synthesis filter square(.)  ... 
doi:10.1109/jstsp.2014.2374574 fatcat:7upr6ciu6ncxpkzedzfkyhqy3i
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