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AES Convention Papers Forum » Adaptive Filter Banks using ...
https://secure.aes.org/forum/pubs/conventions/?elib=13728
Adaptive Filter Banks using Fixed Size MDCT and Subband Merging for Audio Coding- Comparison with the MPEG AAC Flter Banks The MPEG Audio AAC Standard [1] uses two MDCT sizes and transition windows in order to adapt …
AES E-Library » Adaptive Filter Banks using Fixed Size ...
https://www.aes.org/e-lib/online/browse.cfm?elib=13728
The MPEG Audio AAC Standard [1] uses two MDCT sizes and transition windows in order to adapt these uniform transforms to the signal specifics. Here, we present a new adaptation scheme based on a fixed size MDCT where subband merging is done in order to obtain better temporal resolution on chosen parts of the spectrum. The performances of the proposed approach are …
(PDF) A matched FIR filter bank for audio coding
https://www.researchgate.net/publication/4207830_A_matched_FIR_filter_bank_for_audio_coding
It is based on matched finite impulse response (FIR) wavelet-packet-like filter banks, the filter coefficients being produced adoptively according to the input signal. This technique achieves...
(PDF) A matched FIR filter bank for audio coding | Adilson ...
https://www.academia.edu/908092/A_matched_FIR_filter_bank_for_audio_coding
The matched filter-bank makes a time-frequency- successfully extended this idea to the field of audio coding. shape analysis, reducing the number of sub-bands requiring The decoder that implements the proposed technique quantization.
MPEG Filter Banks | Spectral Audio Signal Processing
https://www.dsprelated.com/freebooks/sasp/MPEG_Filter_Banks.html
MPEG Filter Banks . This section provides some highlights of the history of filter banks used for perceptual audio coding (MPEG audio). For a more complete introduction and discussion of MPEG filter banks, see, e.g., [16,273]. Pseudo-QMF Cosine Modulation Filter Bank . Section 11.3.5 introduced two-channel quadrature mirror filter banks (QMF).QMFs were shown to provide a …
AES E-Library » Audio Coding Based on Rate-Distortion …
https://www.aes.org/e-lib/browse.cfm?elib=8066
In [1] and [13], we have presented an new audio coding scheme which offers a flexible time-frequency tiling by the use of a signal-adaptive wavelet filterbank. The filterbank can be switched individually in each subband based on perceptual and rate-distortion criteria.
Time to Frequency Mapping Part II: The MDCT | …
https://link.springer.com/chapter/10.1007/978-1-4615-0327-9_5
The PQMF solution to developing near-perfect reconstruction filter banks (see Chapter 4) was extremely important. Another approach to the time to frequency mapping of audio signals is historically connected to the development of transform coding.
Efficient Perceptual Audio Coding Using Cosine and Sine ...
http://www.ecodis.de/audio/helmrich_diss_v3.pdf
2 Modern Perceptual Audio Transform Coding 7 2.1 Filter Banks for Input-Adaptive Time/Frequency Mapping 8 2.2 Reduction of Spectrotemporal Redundancy and Irrelevance 15 2.3 Scaling, Quantization, Substitution, and Entropy Coding 26 2.4 Extensions for Parametric High-Frequency Regeneration 34
Audio Coding with Signal Adaptive Block based Filter Bank ...
http://yadda.icm.edu.pl/yadda/element/bwmeta1.element.ieee-000004287362
transform coding audio coding codecs discrete cosine transforms discrete Fourier transforms time-frequency analysis subjective listening test audio coding perceptual audio codec DFT DCT CELP energy compaction coding gain subband coding signal adaptive block based filter bank switching time/frequency mapping transform MPEG-1 Layer-III algorithm ...
A new robust wavelet based algorithm for baseline ...
https://www.researchgate.net/publication/224143421_A_new_robust_wavelet_based_algorithm_for_baseline_wandering_cancellation_in_ECG_signals
This method has the advantage than the alternative low-pass filtering approach because it has adaptive nature by observing the power distribution in …
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