Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform
A wavelet packet based on 4-band building blocks was used to implement an auditory model for 44.1kHz and 16kHz sampling frequency. The underlying paraunitary filter bank is implemented using a quaternionic lattice structurally insensitive to the quantization of its coefficients. Both the linear phas...
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| Format: | Article |
| Language: | English |
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Institute of Fundamental Technological Research Polish Academy of Sciences
2014-03-01
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| Series: | Archives of Acoustics |
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| Online Access: | https://acoustics.ippt.pan.pl/index.php/aa/article/view/665 |
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| author | M. PARFIENIUK J. BASZUN A. A. PETROVSKY |
| author_facet | M. PARFIENIUK J. BASZUN A. A. PETROVSKY |
| author_sort | M. PARFIENIUK |
| collection | DOAJ |
| description | A wavelet packet based on 4-band building blocks was used to implement an auditory model for 44.1kHz and 16kHz sampling frequency. The underlying paraunitary filter bank is implemented using a quaternionic lattice structurally insensitive to the quantization of its coefficients. Both the linear phase and orthogonality are possible for 4-band wavelets, so a better perceptual quality can be expected and an increased compression ratio for the coders based on the proposed solution in comparison to standard 2-band wavelet packets or a warped DFT transform. These features and a low computational complexity predestinate this approach to be a tempting alternative to widely known solutions. |
| format | Article |
| id | doaj-art-cee51cec47cf47e59f570884ce5d4499 |
| institution | DOAJ |
| issn | 0137-5075 2300-262X |
| language | English |
| publishDate | 2014-03-01 |
| publisher | Institute of Fundamental Technological Research Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Acoustics |
| spelling | doaj-art-cee51cec47cf47e59f570884ce5d44992025-08-20T02:39:19ZengInstitute of Fundamental Technological Research Polish Academy of SciencesArchives of Acoustics0137-50752300-262X2014-03-01312Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transformM. PARFIENIUK0J. BASZUN1A. A. PETROVSKY2Białystok University of TechnologyBiałystok University of TechnologyBiałystok University of TechnologyA wavelet packet based on 4-band building blocks was used to implement an auditory model for 44.1kHz and 16kHz sampling frequency. The underlying paraunitary filter bank is implemented using a quaternionic lattice structurally insensitive to the quantization of its coefficients. Both the linear phase and orthogonality are possible for 4-band wavelets, so a better perceptual quality can be expected and an increased compression ratio for the coders based on the proposed solution in comparison to standard 2-band wavelet packets or a warped DFT transform. These features and a low computational complexity predestinate this approach to be a tempting alternative to widely known solutions.https://acoustics.ippt.pan.pl/index.php/aa/article/view/665wavelet packet transformquaternionmasking threshold |
| spellingShingle | M. PARFIENIUK J. BASZUN A. A. PETROVSKY Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform Archives of Acoustics wavelet packet transform quaternion masking threshold |
| title | Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform |
| title_full | Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform |
| title_fullStr | Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform |
| title_full_unstemmed | Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform |
| title_short | Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform |
| title_sort | computing of masking thresholds for audio coders based on a quaternionic 4 band wavelet packet transform |
| topic | wavelet packet transform quaternion masking threshold |
| url | https://acoustics.ippt.pan.pl/index.php/aa/article/view/665 |
| work_keys_str_mv | AT mparfieniuk computingofmaskingthresholdsforaudiocodersbasedonaquaternionic4bandwaveletpackettransform AT jbaszun computingofmaskingthresholdsforaudiocodersbasedonaquaternionic4bandwaveletpackettransform AT aapetrovsky computingofmaskingthresholdsforaudiocodersbasedonaquaternionic4bandwaveletpackettransform |