Coding of spatio-temporal audio spectra using tree-structured directional filterbanks
We address the problem of integrating directional analysis of sound into the filterbank of a spatial audio coder, with the purpose of processing and coding with some degree of independence the plane waves traveling in different directions. A plane wave represents an elementary waveform in the spatio...
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| creator | Pinto, F. Vetterli, M. |
| description | We address the problem of integrating directional analysis of sound into the filterbank of a spatial audio coder, with the purpose of processing and coding with some degree of independence the plane waves traveling in different directions. A plane wave represents an elementary waveform in the spatio-temporal analysis of the sound field, the same way a complex exponential is an elementary waveform in the time domain analysis of signals. Since a two-dimensional separable filterbank is not flexible enough for this purpose, we propose a non-separable approach based on the quincunx filterbank with diamond-shaped filters, cascaded with a base transform filterbank. This solution provides an invertible and critically sampled decomposition of the spatio-temporal spectra into subbands representing the different directions of wave propagation. |
| doi_str_mv | 10.1109/ASPAA.2009.5346473 |
| format | Conference Proceeding |
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This solution provides an invertible and critically sampled decomposition of the spatio-temporal spectra into subbands representing the different directions of wave propagation.</description><subject>Acoustic applications</subject><subject>Acoustic propagation</subject><subject>Acoustic signal processing</subject><subject>Audio coding</subject><subject>Conferences</subject><subject>directional filterbanks</subject><subject>Frequency</subject><subject>multidimensional processing</subject><subject>Multidimensional signal processing</subject><subject>Signal analysis</subject><subject>Signal processing</subject><subject>Spatial audio coding</subject><subject>Spatiotemporal phenomena</subject><issn>1931-1168</issn><issn>1947-1629</issn><isbn>1424436788</isbn><isbn>9781424436781</isbn><isbn>9781424436798</isbn><isbn>1424436796</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2009</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1kNtKAzEQhuMJrLUvoDf7Aqk5zGaTy6VYFQoK2uuSTSYSbbslyV749m6x_jcD__cxMEPIHWdzzpl5aN_f2nYuGDPzWoKCRp6RmWk0BwEgVWP0OZlwAw3lSpgLcvMPtL48Askp50pfk1nOX2wM1EKDmZD1ovdx_1n1ocoHW2JPC-4OfbLbyg4-9mOLriRbDfmolYRIc0mDK0NCX_mYRhz7_eiHuC2YOrv_zrfkKthtxtlpTsl6-fixeKar16eXRbuikUuQtDYhoGy4A8uc5EEgD50BBoCiNr4DVA67TrnxcNGhlhp0g-A5Wu-MU3JK7v_2RkTcHFLc2fSzOX1I_gLtiFet</recordid><startdate>200910</startdate><enddate>200910</enddate><creator>Pinto, F.</creator><creator>Vetterli, M.</creator><general>IEEE</general><scope>6IE</scope><scope>6IL</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIL</scope></search><sort><creationdate>200910</creationdate><title>Coding of spatio-temporal audio spectra using tree-structured directional filterbanks</title><author>Pinto, F. ; Vetterli, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i1343-59ffe371c4a0c31f2e1fb94044e259db4e6cebb6c2002be838487e4d1eadc9c63</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2009</creationdate><topic>Acoustic applications</topic><topic>Acoustic propagation</topic><topic>Acoustic signal processing</topic><topic>Audio coding</topic><topic>Conferences</topic><topic>directional filterbanks</topic><topic>Frequency</topic><topic>multidimensional processing</topic><topic>Multidimensional signal processing</topic><topic>Signal analysis</topic><topic>Signal processing</topic><topic>Spatial audio coding</topic><topic>Spatiotemporal phenomena</topic><toplevel>online_resources</toplevel><creatorcontrib>Pinto, F.</creatorcontrib><creatorcontrib>Vetterli, M.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Pinto, F.</au><au>Vetterli, M.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Coding of spatio-temporal audio spectra using tree-structured directional filterbanks</atitle><btitle>2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics</btitle><stitle>ASPAA</stitle><date>2009-10</date><risdate>2009</risdate><spage>277</spage><epage>280</epage><pages>277-280</pages><issn>1931-1168</issn><eissn>1947-1629</eissn><isbn>1424436788</isbn><isbn>9781424436781</isbn><eisbn>9781424436798</eisbn><eisbn>1424436796</eisbn><abstract>We address the problem of integrating directional analysis of sound into the filterbank of a spatial audio coder, with the purpose of processing and coding with some degree of independence the plane waves traveling in different directions. A plane wave represents an elementary waveform in the spatio-temporal analysis of the sound field, the same way a complex exponential is an elementary waveform in the time domain analysis of signals. Since a two-dimensional separable filterbank is not flexible enough for this purpose, we propose a non-separable approach based on the quincunx filterbank with diamond-shaped filters, cascaded with a base transform filterbank. This solution provides an invertible and critically sampled decomposition of the spatio-temporal spectra into subbands representing the different directions of wave propagation.</abstract><pub>IEEE</pub><doi>10.1109/ASPAA.2009.5346473</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| identifier | ISSN: 1931-1168 |
| ispartof | 2009 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, 2009, p.277-280 |
| issn | 1931-1168 1947-1629 |
| language | eng |
| recordid | cdi_ieee_primary_5346473 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Acoustic applications Acoustic propagation Acoustic signal processing Audio coding Conferences directional filterbanks Frequency multidimensional processing Multidimensional signal processing Signal analysis Signal processing Spatial audio coding Spatiotemporal phenomena |
| title | Coding of spatio-temporal audio spectra using tree-structured directional filterbanks |
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