{"id":3490,"date":"2017-08-11T12:50:02","date_gmt":"2017-08-11T12:50:02","guid":{"rendered":"https:\/\/www.massa.com\/?page_id=3490"},"modified":"2026-03-02T13:43:25","modified_gmt":"2026-03-02T13:43:25","slug":"history","status":"publish","type":"page","link":"https:\/\/www.massa.com\/history\/","title":{"rendered":"History"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row type=&#8221;vc_default&#8221; full_width=&#8221;stretch_row_content&#8221;][vc_column width=&#8221;1\/4&#8243; offset=&#8221;vc_col-lg-3 vc_col-md-3 vc_hidden-sm vc_hidden-xs&#8221;]<div class=\"ult_row_spacer\"><div class=\"ult-sticky-anchor\"><div class=\"ult-sticky-section ult-sticky sticky-bg sticky-menu\"  data-gutter= '130' data-stick_behaviour= 'stick_with_scroll_row'  data-sticky_position= 'top' data-mobile='yes' data-support='no'>[vc_wp_custommenu title=&#8221;Resources&#8221; nav_menu=&#8221;73&#8243; el_id=&#8221;menu-products&#8221;]<\/div><div class=\"ult-space\"><\/div><\/div><\/div>[\/vc_column][vc_column width=&#8221;2\/3&#8243; offset=&#8221;vc_col-lg-6 vc_col-md-6 vc_col-xs-12&#8243;][vc_column_text]<\/p>\n<h3>Acoustics Is the Study of Sound<\/h3>\n<p>Until the 19th century, acoustics primarily consisted of the physics of sound propagation related to human hearing. During the early 1800\u2019s, electromagnetics was discovered and one of the first non-musical instrument sound generators, the telegraph, was developed. The invention of the telephone in 1876 resulted in the creation of microphones and loudspeakers, followed by the phonograph at the end of the 19th century. Radio was developed during the early 1900\u2019s.<\/p>\n<p>During the early part of the 20th century, a small group of researchers began applying engineering principles, such as equivalent circuits, to the science of acoustics in order to improve the design and construction of microphones and loudspeakers. This was the birth of the applied science of electroacoustics. The work was carried out in several universities and in the research laboratories of companies such as Bell Laboratories and Victor Talking Machine (which in 1929 became RCA Victor).<\/p>\n<p>To better communicate and share their discoveries, they formed the Acoustical Society of America in 1929, and the first text book on electroacoustics, Applied Acoustics, was authored by Frank Massa and Harry Olson in 1934. Many of the fundamental principles developed by these pioneers is still used today in the design of electroacoustic transducers and systems.<\/p>\n<p>For more information on some of these early developments in electroacoustics, see the following publications:<\/p>\n<p>[\/vc_column_text][vc_empty_space][vc_column_text css=&#8221;&#8221;]<\/p>\n<p><a title=\"Frank Massa - ASA Article\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Frank_Massa-ASA_Article-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Some Personal Recollections of Early Experiences on the New<\/a><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Frank_Massa-ASA_Article-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><\/a><br \/>\n<a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Frank_Massa-ASA_Article-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Frontier of Electroacoustics During the 1920&#8217;s and 1930&#8217;s<br \/>\n<\/a>This invited paper by Frank Massa was presented at the 106th meeting of the<br \/>\nAcoustical Society\u00a0of America in San Diego on November 10, 1983, and published in<br \/>\nthe April 1985 (Vol. 77, No. 4)\u00a0edition of the Journal of the Acoustical Society of America.<\/p>\n<p><a title=\"Frank Massa - Sonar Transducers: a History\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Frank_Massa-Sonar_Transducers-A_History.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Sonar Transducers: a History<\/a><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Frank_Massa-Sonar_Transducers-A_History.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><br \/>\n<\/a>This article was written by Frank Massa and published in the November 1989 issue<br \/>\nof Sea\u00a0Technology Magazine<em>.<\/em><\/p>\n<p><a title=\"Ultrasonic Transducers for Use in Air, by Frank Massa\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Ultrasonics-for-Use-in-Air-by-Frank-Massa-1.pdf\">Ultrasonic Transducers for Use in Air\u00a0<img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"24\" height=\"24\" \/><br \/>\n<\/a>by Frank Massa<br \/>\n<em>Preceedings of the IEEE, Volume 53, No. 10, October 1965<\/em><\/p>\n<p><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Radiation-of-Sound-by-Frank-Massa-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Radiation of Sound\u00a0<img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"25\" height=\"25\" \/><\/a><br \/>\nby Frank Massa<br \/>\n<em>American Institute of Physics Handbook, Third Edition, 1972<\/em><\/p>\n<p><br class=\"none\" \/>For printable copies of reports containing electroacoustic information written by Don Massa, please click the following links:<\/p>\n<p><a href=\"\/whitepapers\/\">Recent Whitepapers<\/a> by Donald P. Massa\u00a0and Dawn F. Massa Stancavish<\/p>\n<p><a title=\"Donald P. Massa - Fundamentals of Electroacoustics\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/DPM_Fundamentals_of_Electroacoustics.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">An Overview of Some of the Fundamentals Electroacoustics<img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><\/a><\/p>\n<p><a title=\"Donald P. Massa - Overview of Electroacoustic Transducers\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/DPM_Overview_of_Electroacoustic_Transducers.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">An Overview of Electroacoustic Transducers<img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><\/a><\/p>\n<p><a title=\"Massa - An Overview of Ultrasonic Sensors, Sensors Magazine\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/Sensors_February-March_1999-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">An Overview of Ultrasonic Sensors<\/a>\u00a0\u00a0<em>(Sensors Magazine, February &#8211; March 1999)<a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/DPM_Overview_of_Sonar_Operation.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><\/a><\/em><\/p>\n<p><a title=\"Donald P. Massa - A Brief Overview of Sonar Operation\" href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/DPM_Overview_of_Sonar_Operation.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">A Brief Overview of Sonar Operation<img decoding=\"async\" class=\" wp-image-6038 alignnone\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"pdf\" width=\"22\" height=\"22\" \/><\/a><\/p>\n<p>[\/vc_column_text][vc_column_text css=&#8221;.vc_custom_1772453922247{margin-top: 40px !important;}&#8221;]Massa Products Corporation engineers have been published in a number of professional journals and trade magazines. In addition, articles about Massa have been written for several distinguished publications. For printable copies of a few of these articles,<\/p>\n<p><strong>please follow the links below:<\/strong><\/p>\n<p><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2020\/10\/Massa-Abbreviated-FAQ-of-Ultrasonics-201030.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">An Abbreviated FAQ Regarding the Use of Ultrasonics<\/a><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2020\/10\/Massa-Abbreviated-FAQ-of-Ultrasonics-201030.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a><\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Sea_Technolgoy_November_2015.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Massa Celebrates 70 Years of Innovation and Invention, Sea Technology, November 2015<\/a> <a href=\"\/wp-content\/uploads\/2017\/08\/Sea_Technolgoy_November_2015.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a><\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Summary-Time_Magazine_Articles.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">The Unique Capabilities of Massa Have Been Recognized <\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Summary-Time_Magazine_Articles.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"> on Two Different Occasions by TIME Magazine<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Summary-Time_Magazine_Articles.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a><\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Frank_Massa-ASA_Article.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Some Personal Recollections of Early Experiences on the New Frontier of Electroacoustics During the Late 1920\u2019s and Early 1930\u2019s<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Frank_Massa-ASA_Article.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a>\u00a0&#8211; by Frank Massa, Journal of the Acoustic Society of America, April 1985<\/p>\n<hr \/>\n<p>[\/vc_column_text][vc_column_text css=&#8221;&#8221;]<a href=\"\/wp-content\/uploads\/2017\/08\/Sea_Technology_November_1985.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Massa Leads by \u2018Doing the Impossible\u2019<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Sea_Technology_November_1985.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; Sea Technology, November 1985<\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Frank_Massa-Sonar_Transducers-A_History.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Sonar Transducers: A History<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Frank_Massa-Sonar_Transducers-A_History.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; by Frank Massa, Sea Technology, November 1989<\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/UnderSea_Technology_February_1972.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Frank Massa, a Pioneer in Electroacoustics<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/UnderSea_Technology_February_1972.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; Undersea Technology, February 1972<\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Boston-Sunday-Post-9-13-53-Bryan-Massa-FM-EM-for-Web-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">(Massa) Uses Sound to Clean Tools, Dye Cloth, Do Other Jobs<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Boston-Sunday-Post-9-13-53-Bryan-Massa-FM-EM-for-Web-1.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; Boston Sunday Post, September 13, 1953<\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Radiation-of-Sound-by-Frank-Massa.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Radiation of Sound\u00a0<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Radiation-of-Sound-by-Frank-Massa.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; by Frank Massa, American Institute of Physics Handbook, Third Edition, 1972<\/p>\n<hr \/>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Ultrasonics-for-Use-in-Air-by-Frank-Massa.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Ultrasonic Transducers for Use in Air\u00a0<\/a><a href=\"\/wp-content\/uploads\/2017\/08\/Ultrasonics-for-Use-in-Air-by-Frank-Massa.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"><img decoding=\"async\" class=\"alignnone wp-image-6038\" src=\"\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\".pdf\" width=\"24\" height=\"24\" \/><\/a> &#8211; by Frank Massa, Preceedings of the IEEE, Volume 53, No. 10, October 1965[\/vc_column_text][vc_column_text css=&#8221;&#8221;]<\/p>\n<hr \/>\n<p><strong>Choosing an Ultrasonic Sensor for Proximity or Distance Measurement<\/strong><br \/>\nby Donald P. Massa<\/p>\n<p><a href=\"\/wp-content\/uploads\/2017\/08\/Sensors_February-March_1999.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">Acoustic Considerations and Optimizing Sensor Selection\u00a0<img decoding=\"async\" class=\"alignnone size-full wp-image-3148\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf.png\" alt=\"\" width=\"36\" height=\"36\" \/><\/a> &#8211; Sensors, February-March 1999<\/p>\n<hr \/>\n<p><a href=\"https:\/\/www.massa.com\/wp-content\/uploads\/2019\/06\/Sensors-October-1987.pdf\">An Automatic Ultrasonic Bowling Scoring System<\/a><img decoding=\"async\" class=\"alignnone size-full wp-image-3148\" src=\"https:\/\/www.massa.com\/wp-content\/uploads\/2017\/08\/pdf-1.png\" alt=\"\" width=\"36\" height=\"36\" \/> &#8211; Sensors, October 1987<\/p>\n<hr \/>\n<p><a href=\"\/whitepapers\/\">Whitepapers by Massa Acoustic Experts<\/a>[\/vc_column_text][vc_empty_space height=&#8221;50px&#8221;][vc_column_text]<div class=\"printfriendly pf-button  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gfield--type-phone field_sublabel_below gfield--no-description field_description_below hidden_label field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_3'>Phone<\/label><div class='ginput_container ginput_container_phone'><input name='input_3' id='input_1_3' type='tel' value='' class='large'  placeholder='Phone Number'  aria-invalid=\"false\"   \/><\/div><\/li><li id=\"field_1_6\" class=\"gfield gfield--type-text field_sublabel_below gfield--no-description field_description_below hidden_label field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_6'>Company<\/label><div class='ginput_container ginput_container_text'><input name='input_6' id='input_1_6' type='text' value='' class='large'    placeholder='Company'  aria-invalid=\"false\"   \/><\/div><\/li><li id=\"field_1_4\" class=\"gfield gfield--type-textarea gfield_contains_required field_sublabel_below gfield--no-description field_description_below hidden_label field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_4'>Message<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_textarea'><textarea name='input_4' id='input_1_4' class='textarea medium'    placeholder='Type your message here' aria-required=\"true\" aria-invalid=\"false\"   rows='10' cols='50'><\/textarea><\/div><\/li><li id=\"field_1_7\" class=\"gfield gfield--type-radio gfield--type-choice gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' >How Did You Hear About Us?<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_radio'><ul class='gfield_radio' id='input_1_7'>\n\t\t\t<li class='gchoice gchoice_1_7_0'>\n\t\t\t\t<input name='input_7' type='radio' value='Company Ad'  id='choice_1_7_0'    \/>\n\t\t\t\t<label for='choice_1_7_0' id='label_1_7_0' class='gform-field-label gform-field-label--type-inline'>Company Ad<\/label>\n\t\t\t<\/li>\n\t\t\t<li class='gchoice gchoice_1_7_1'>\n\t\t\t\t<input name='input_7' type='radio' value='Internet Search'  id='choice_1_7_1'    \/>\n\t\t\t\t<label for='choice_1_7_1' id='label_1_7_1' class='gform-field-label gform-field-label--type-inline'>Internet Search<\/label>\n\t\t\t<\/li>\n\t\t\t<li class='gchoice gchoice_1_7_2'>\n\t\t\t\t<input name='input_7' type='radio' value='Other'  id='choice_1_7_2'    \/>\n\t\t\t\t<label for='choice_1_7_2' id='label_1_7_2' class='gform-field-label gform-field-label--type-inline'>Other<\/label>\n\t\t\t<\/li><\/ul><\/div><\/li><li id=\"field_1_8\" class=\"gfield gfield--type-select gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_8'>Which Company Ad?<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_select'><select name='input_8' id='input_1_8' class='medium gfield_select'    aria-required=\"true\" aria-invalid=\"false\" ><option value='Azo' >Azo<\/option><option value='Automation World' >Automation World<\/option><option value='Boston Private Bank' >Boston Private Bank<\/option><option value='Control Design' >Control Design<\/option><option value='Chemical Processing' >Chemical Processing<\/option><option value='Engineering 360' >Engineering 360<\/option><option value='Facebook' >Facebook<\/option><option value='Fierce Sensors' >Fierce Sensors<\/option><option value='Flow Control' >Flow Control<\/option><option value='Forbes Business Council' >Forbes Business Council<\/option><option value='Hingham Anchor' >Hingham Anchor<\/option><option value='LinkedIn' >LinkedIn<\/option><option value='Machine Design' >Machine Design<\/option><option value='Power Engineering' >Power Engineering<\/option><option value='Publication for USS Delaware Commissioning' >Publication for USS Delaware Commissioning<\/option><option value='Sea Technology' >Sea Technology<\/option><option value='Tech Briefs' >Tech Briefs<\/option><option value='Untold Content' >Untold Content<\/option><\/select><\/div><\/li><li id=\"field_1_9\" class=\"gfield gfield--type-text gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_9'>Internet Search<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_text'><input name='input_9' id='input_1_9' type='text' value='' class='large'    placeholder='What were you searching for?' aria-required=\"true\" aria-invalid=\"false\"   \/><\/div><\/li><li id=\"field_1_10\" class=\"gfield gfield--type-text gfield_contains_required field_sublabel_below gfield--no-description field_description_below field_validation_below gfield_visibility_visible\"  ><label class='gfield_label gform-field-label' for='input_1_10'>Other<span class=\"gfield_required\"><span class=\"gfield_required gfield_required_asterisk\">*<\/span><\/span><\/label><div class='ginput_container ginput_container_text'><input name='input_10' id='input_1_10' type='text' value='' class='large'    placeholder='Could you give us some details?' aria-required=\"true\" aria-invalid=\"false\"   \/><\/div><\/li><\/ul><\/div>\n        <div class='gform-footer gform_footer top_label'> <input type='submit' id='gform_submit_button_1' class='gform_button button' onclick='gform.submission.handleButtonClick(this);' data-submission-type='submit' value='Submit'  \/> \n            <input type='hidden' class='gform_hidden' name='gform_submission_method' data-js='gform_submission_method_1' value='postback' \/>\n            <input type='hidden' class='gform_hidden' name='gform_theme' data-js='gform_theme_1' id='gform_theme_1' value='legacy' \/>\n            <input type='hidden' class='gform_hidden' name='gform_style_settings' data-js='gform_style_settings_1' id='gform_style_settings_1' value='[]' \/>\n            <input type='hidden' class='gform_hidden' name='is_submit_1' value='1' \/>\n            <input type='hidden' class='gform_hidden' name='gform_submit' value='1' \/>\n            \n            <input type='hidden' class='gform_hidden' name='gform_currency' data-currency='USD' value='DDrZQ80dsuNyAome4RkVRMzHmfy3i6q3rWZmYSNP0fC41MYS4ZqemL9eN4od1GLuA9c3xry7ndlb0DgP4EbJTt51horWkk1MfcrnyVTPctUE9X8=' \/>\n            <input type='hidden' 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width=&#8221;1\/4&#8243; offset=&#8221;vc_col-lg-3 vc_col-md-3 vc_hidden-sm vc_hidden-xs&#8221;][\/vc_column][vc_column width=&#8221;2\/3&#8243; offset=&#8221;vc_col-lg-6 vc_col-md-6 vc_col-xs-12&#8243;][vc_column_text] Acoustics Is the Study of Sound Until the 19th century, acoustics primarily consisted of the physics of sound propagation related to human hearing. 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