Atmospheric effects on voice command intelligibility from acoustic hail and warning devices
Voice command sound pressure levels (SPLs) were recorded at distances up to 1500 m. Received SPLs were related to the meteorological condition during sound propagation and compared with the outdoor sound propagation standard ISO 9613-2. Intelligibility of received signals was calculated using ANSI S...
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| Veröffentlicht in: | The Journal of the Acoustical Society of America 2011-04, Vol.129 (4), p.2237-2244 |
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| container_title | The Journal of the Acoustical Society of America |
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| creator | Bostron, Jason H. Brungart, Timothy A. Barnard, Andrew R. McDevitt, Timothy E. |
| description | Voice command sound pressure levels (SPLs) were recorded at distances up to 1500 m. Received SPLs were related to the meteorological condition during sound propagation and compared with the outdoor sound propagation standard ISO 9613-2. Intelligibility of received signals was calculated using ANSI S3.5. Intelligibility results for the present voice command indicate that meteorological condition imposes little to no effect on intelligibility when the signal-to-noise ratio (SNR) is low (0 dB). In these two cases the signal is firmly unintelligible or intelligible, respectively. However, at moderate SNRs, variations in received SPL can cause a fully intelligible voice command to become unintelligible, depending on the meteorological condition along the sound propagation path. These changes in voice command intelligibility often occur on time scales as short as minutes during upward refracting conditions, typically found above ground during the day or upwind of a sound source. Reliably predicting the intelligibility of a voice command in a moderate SNR environment can be challenging due to the inherent variability imposed by sound propagation through the atmosphere. |
| doi_str_mv | 10.1121/1.3559710 |
| format | Article |
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Received SPLs were related to the meteorological condition during sound propagation and compared with the outdoor sound propagation standard ISO 9613-2. Intelligibility of received signals was calculated using ANSI S3.5. Intelligibility results for the present voice command indicate that meteorological condition imposes little to no effect on intelligibility when the signal-to-noise ratio (SNR) is low (<−9 dB) or high (>0 dB). In these two cases the signal is firmly unintelligible or intelligible, respectively. However, at moderate SNRs, variations in received SPL can cause a fully intelligible voice command to become unintelligible, depending on the meteorological condition along the sound propagation path. These changes in voice command intelligibility often occur on time scales as short as minutes during upward refracting conditions, typically found above ground during the day or upwind of a sound source. 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Received SPLs were related to the meteorological condition during sound propagation and compared with the outdoor sound propagation standard ISO 9613-2. Intelligibility of received signals was calculated using ANSI S3.5. Intelligibility results for the present voice command indicate that meteorological condition imposes little to no effect on intelligibility when the signal-to-noise ratio (SNR) is low (<−9 dB) or high (>0 dB). In these two cases the signal is firmly unintelligible or intelligible, respectively. However, at moderate SNRs, variations in received SPL can cause a fully intelligible voice command to become unintelligible, depending on the meteorological condition along the sound propagation path. These changes in voice command intelligibility often occur on time scales as short as minutes during upward refracting conditions, typically found above ground during the day or upwind of a sound source. Reliably predicting the intelligibility of a voice command in a moderate SNR environment can be challenging due to the inherent variability imposed by sound propagation through the atmosphere.</description><subject>Acoustics</subject><subject>Aeroacoustics, atmospheric sound</subject><subject>Airports</subject><subject>Atmosphere</subject><subject>Audition</subject><subject>Biological and medical sciences</subject><subject>Communications Media</subject><subject>Disaster Planning</subject><subject>Emergencies</subject><subject>Exact sciences and technology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Humans</subject><subject>Military Science</subject><subject>Models, Theoretical</subject><subject>Perception</subject><subject>Physics</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Speech Acoustics</subject><subject>Speech Intelligibility</subject><subject>Voice</subject><subject>Weather</subject><issn>0001-4966</issn><issn>1520-8524</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0UlLxTAQAOAgij6Xg39AchHxUM20TZscPIi4geBFTx7KJE010jbPJE_x3xt5dbmIpzDwzWQWQnaBHQHkcAxHBeeyBrZCZsBzlgmel6tkxhiDrJRVtUE2Q3hOIReFXCcbOZR1VdViRh5O4-DC_Ml4q6npOqNjoG6kr85qQ7UbBhxbasdo-t4-WmV7G99p591AUbtFiCntCW1PP9kb-tGOj7Q1ryk7bJO1DvtgdqZ3i9xfnN-dXWU3t5fXZ6c3mS4Zi5lkqsXUTilE0cpaVUoxztBUQupKMMVK5K2pFaKUUoMwwuQoAbTqVF0oVmyRg2XduXcvCxNiM9igU8M4mtRiI-o0L5Np9n9lBVxCzfMkD5dSexeCN10z93ZA_94Aaz6X3kAzLT3ZvanqQg2m_ZZfW05gfwIYNPadx1Hb8ONKAJFYcidLF7SNGK0b__71192a6W7FBw7SnpA</recordid><startdate>20110401</startdate><enddate>20110401</enddate><creator>Bostron, Jason H.</creator><creator>Brungart, Timothy A.</creator><creator>Barnard, Andrew R.</creator><creator>McDevitt, Timothy E.</creator><general>Acoustical Society of America</general><general>American Institute of Physics</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20110401</creationdate><title>Atmospheric effects on voice command intelligibility from acoustic hail and warning devices</title><author>Bostron, Jason H. ; Brungart, Timothy A. ; Barnard, Andrew R. ; McDevitt, Timothy E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-90bda7664883d97b6bb050ae689c680b04a5de7baa999c18e8e2a911cbfb73b03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acoustics</topic><topic>Aeroacoustics, atmospheric sound</topic><topic>Airports</topic><topic>Atmosphere</topic><topic>Audition</topic><topic>Biological and medical sciences</topic><topic>Communications Media</topic><topic>Disaster Planning</topic><topic>Emergencies</topic><topic>Exact sciences and technology</topic><topic>Fundamental and applied biological sciences. 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Psychophysiology</topic><topic>Speech Acoustics</topic><topic>Speech Intelligibility</topic><topic>Voice</topic><topic>Weather</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bostron, Jason H.</creatorcontrib><creatorcontrib>Brungart, Timothy A.</creatorcontrib><creatorcontrib>Barnard, Andrew R.</creatorcontrib><creatorcontrib>McDevitt, Timothy E.</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>The Journal of the Acoustical Society of America</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bostron, Jason H.</au><au>Brungart, Timothy A.</au><au>Barnard, Andrew R.</au><au>McDevitt, Timothy E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Atmospheric effects on voice command intelligibility from acoustic hail and warning devices</atitle><jtitle>The Journal of the Acoustical Society of America</jtitle><addtitle>J Acoust Soc Am</addtitle><date>2011-04-01</date><risdate>2011</risdate><volume>129</volume><issue>4</issue><spage>2237</spage><epage>2244</epage><pages>2237-2244</pages><issn>0001-4966</issn><eissn>1520-8524</eissn><coden>JASMAN</coden><abstract>Voice command sound pressure levels (SPLs) were recorded at distances up to 1500 m. Received SPLs were related to the meteorological condition during sound propagation and compared with the outdoor sound propagation standard ISO 9613-2. Intelligibility of received signals was calculated using ANSI S3.5. Intelligibility results for the present voice command indicate that meteorological condition imposes little to no effect on intelligibility when the signal-to-noise ratio (SNR) is low (<−9 dB) or high (>0 dB). In these two cases the signal is firmly unintelligible or intelligible, respectively. However, at moderate SNRs, variations in received SPL can cause a fully intelligible voice command to become unintelligible, depending on the meteorological condition along the sound propagation path. These changes in voice command intelligibility often occur on time scales as short as minutes during upward refracting conditions, typically found above ground during the day or upwind of a sound source. 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| subjects | Acoustics Aeroacoustics, atmospheric sound Airports Atmosphere Audition Biological and medical sciences Communications Media Disaster Planning Emergencies Exact sciences and technology Fundamental and applied biological sciences. Psychology Fundamental areas of phenomenology (including applications) Humans Military Science Models, Theoretical Perception Physics Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Speech Acoustics Speech Intelligibility Voice Weather |
| title | Atmospheric effects on voice command intelligibility from acoustic hail and warning devices |
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