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Filters
Joint filterbank structures for integrating audio coding into hearing aid applications
2008
Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing
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Both the audio coding and the hearing aid application use subband processing, but their requirements for the filterbanks are totally different. ...
The hearing aid application typically uses an oversampled filterbank to reduce the aliasing in each subband, whereas the audio codec needs a critically sampled filterbank for maximal coding efficiency. ...
In addition, it can also operate in stereo mode, with two real-valued input signals and a separate prototype filter for each input. ...
doi:10.1109/icassp.2008.4517914
dblp:conf/icassp/DongHBC08
fatcat:p44wvfjpenbzlmxqfaqm5kyugy
VLSI Design Of Advanced Digital Filters
[article]
2018
arXiv
pre-print
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Hence, this book describes the Very Large Scale Integration (VLSI) implementation of the CIC filters that are suitable for high-performance audio applications. ...
These filters are normally located after the sigma-delta modulator and have a regular structure. ...
Ritoniemi et al. (1994) presented a stereo audio sigma-delta A/D converter
followed by decimation filters for audio application. ...
arXiv:1806.03721v1
fatcat:mif2z66vrncxfh6bdbim4j2bbu
A 3d-audio reconfigurable processor
2010
Proceedings of the 18th annual ACM/SIGDA international symposium on Field programmable gate arrays - FPGA '10
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In order to alleviate these problems, we propose a reconfigurable 3D-Audio processor that can record and render sound sources concurrently. ...
However, all systems reported in the literature follow a PC-based approach that introduces processing bottlenecks and excessive power consumption. ...
The authors would like to explicitly thank Lars Hörchens and Jasper van Dorp Schuitman from the Laboratory of Acoustical Imaging and Sound Control of the TU Delft University for their valuable contribution ...
doi:10.1145/1723112.1723131
dblp:conf/fpga/TheodoropoulosKG10
fatcat:alhzhrlvpbcnthy3oygjsawicm
A Tutorial on MPEG/Audio Compression
[chapter]
2002
Readings in Multimedia Computing and Networking
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This paper also will cover the basics of psychoacoustic modeling and the methods used by the MPEG/audio algorithm to compress audio data with least perceptible degradation. • MPEG/audio offers a choice ...
This provides a wide range of tradeoffs between codec complexity and compressed audio quality: Layer I is the simplest and is best suited for bit rates above 128 kbits/sec per channel. ...
He is grateful for the funding and support this company provided for his work in the MPEG standards. ...
doi:10.1016/b978-155860651-7/50090-5
fatcat:2j7z6pekljc6jb4lo7djbjthb4
A tutorial on MPEG/audio compression
1995
IEEE Multimedia
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This paper also will cover the basics of psychoacoustic modeling and the methods used by the MPEG/audio algorithm to compress audio data with least perceptible degradation. • MPEG/audio offers a choice ...
This provides a wide range of tradeoffs between codec complexity and compressed audio quality: Layer I is the simplest and is best suited for bit rates above 128 kbits/sec per channel. ...
He is grateful for the funding and support this company provided for his work in the MPEG standards. ...
doi:10.1109/93.388209
fatcat:hq2e3d3aivgfpoma4quxxywpuq
Reconfigurable accelerator for WFS-based 3D-audio
2009
2009 IEEE International Symposium on Parallel & Distributed Processing
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In this paper, we propose a reconfigurable and scalable hardware accelerator for 3D-audio systems based on the Wave Field Synthesis technology. ...
A single RU can achieve up to 7x WFS processing speedup compared to a software implementation running on a Pentium D at 3.4 GHz, while consuming, according to Xilinx XPower, approximately 3 W of power ...
The authors would like to explicitly thank Lars Hörchens and Jasper van Dorp Schuitman from the Laboratory of Acoustical Imaging and Sound Control of TU Delft for their valuable contribution to accomplish ...
doi:10.1109/ipdps.2009.5161218
dblp:conf/ipps/TheodoropoulosKG09
fatcat:qvvlxixx2bgcrgm7po7cuvj2u4
ADCs for DSP Applications
[chapter]
2003
Mixed-signal and DSP Design Techniques
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The digital filter and decimator process the serial bit stream and produce the final output data. ...
The AD1877 is a 16-bit 48kSPS stereo sigma-delta DAC suitable for demanding audio applications. Key specifications are summarized in Figure 3 .17. ...
doi:10.1016/b978-075067611-3/50003-7
fatcat:d4vm3ioznjd3pnxmjvp44sbs4a
Design of a Remote Signal Processing Student Lab
2017
IEEE Access
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We describe our experience of introducing digital signal processing (DSP) concepts via a software-defined radio project using a very inexpensive TV USB capture dongle. ...
The proposed lab experience introduced concepts, such as sampling, IQ signal representation, sample rate conversion, filter design, filter delays, and more, all with an attractive learn-by-doing approach ...
The main topics covered in the DSP course are: • Sampling and reconstruction of baseband and bandpass analog signals. • Decimation and interpolation. • Multi-rate digital signal processing. • Discrete ...
doi:10.1109/access.2017.2736165
fatcat:rgrwryy4nvhtlir2eo54ju5uty
Implementation Analysis of Binaural Audio Crosstalk Cancellation on Heterogeneous Parallel Computing platforms using Mixed Non-Uniform Partitioned Convolution
2015
Indian Journal of Science and Technology
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The combination of instruction level and algorithmic level optimizations make the proposed approach more suitable for implementation of not only stereo inputs based audio CTC but also multichannel inputs ...
The proposed approach was implemented on AMD GPUs using task parallel concept. The instruction level optimization was also provided for complex frequency multiplication and addition using OpenCL. ...
In this, impulse response is decimated into bi-orthonormal filter banks so that minimum FFT Size equal to 2L. Followed by decimation, interpolation technique is applied to get filtered output. ...
doi:10.17485/ijst/2015/v8i33/80399
fatcat:dacyalm4svf3vf2pclyzs4bm5m
Ultimate Trends in Integrated Systems to Enhance Automatic Speech Recognition Performance
[chapter]
2008
Speech Recognition
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filter coefficients and the Fourier transform. ii) Configuration of the audio codec: The kit DSP includes an audio codec AD1836 designed for applications of high-fidelity audio; they are used in audio ...
Analog Devices has included switched capacitor filters and sigma-delta A/ D and D/ A converters on some DSP chips. ...
The last part of the book is devoted to other speech processing applications that can use the information from automatic speech recognition for speaker identification and tracking, for prosody modeling ...
doi:10.5772/6367
fatcat:s5wt62cmmvdvrgbdnms4ejanhm
Design and implementation of a DSP based MPEG-1 audio encoder
1999
IEEE transactions on consumer electronics
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The input to the DSP will be an analog audio signal. A codec provides the DSP with 16-bit samples of the signal. The DSP compresses these 16-bit samples using MPEG-1 layer 1 compression. ...
The speed of current PCs enables them to decode and play an MPEG bitstream in real time. The encoding process, however, cannot be done in real-time. ...
The codec is a multifunction device used to provide the DSP with 16 bit stereo samples of an analog audio source. ...
doi:10.1109/30.754414
fatcat:wi25qpm4zncg7p2oowblagwlkm
Perceptual coding of digital audio
2000
Proceedings of the IEEE
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Next, filter bank design issues and algorithms are addressed, with a particular emphasis placed on the modified discrete cosine transform, a perfect reconstruction cosine-modulated filter bank that has ...
These new applications have created a demand for high-quality digital audio delivery at low bit rates. ...
ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their constructive comments and corrections. ...
doi:10.1109/5.842996
fatcat:jkfvoxg7zrcyxg6fyahe4u73pu
Wave field synthesis for 3D audio
2009
Proceedings of the 6th ACM conference on Computing frontiers - CF '09
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We use the CUDA to map the WFS kernel on a GeForce 8600GT GPU. Additionally, we implement a reconfigurable and scalable hardware accelerator for the same kernel, and map it onto Virtex4 FPGAs. ...
It can fit into small FPGAs and consumes approximately 3 Watts. ...
The authors would like to explicitly thank Lars Hörchens and Jasper van Dorp Schuitman from the Laboratory of Acoustical Imaging and Sound Control of the TU Delft for their valuable contribution to accomplish ...
doi:10.1145/1531743.1531764
dblp:conf/cf/TheodoropoulosCK09
fatcat:ubbmy45fhvawxfwtmqmevx5auq
Real-Time Refocusing Using an FPGA-Based Standard Plenoptic Camera
2018
IEEE transactions on industrial electronics (1982. Print)
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Other Versions
Although GPUs have been shown to provide acceptable performance for real-time plenoptic rendering, their cost and power requirements make them prohibitive for embedded uses (such as in-camera). ...
) to be applied computationally after the fact, rather than once and for all at the time a picture is taken. ...
Plenoptic video can also be used 65 to create stereo pairs for three-dimensional (3-D) viewing-with 66 the important advantage over stereo capture that different videos 67 can be created for different ...
doi:10.1109/tie.2018.2818644
fatcat:gdsf65iukje2vct2rc453asvvq
Martin Russ: Sound Synthesis and Sampling
2000
Computer Music Journal
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This is a book about sound synthesis and sampling. It is intended to provide a reference guide to the many techniques and approaches that are used in both commercial and research sound synthesizers. ...
This book brings together information from a wealth of material, which I have been collecting and compiling for many years. ...
This means that a typical PC of the 2000s will contain a variety of audio processing software 'codecs' for use in telecommunications as well as for audio and music playback. ...
doi:10.1162/comj.2000.24.3.71
fatcat:7dfyllgikzgzrkahh26sjrdnta
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