Video documental Edzná octubre 2021

Exploratory Visit to the Archaeological Zone of Tsja

Overview of the Archaeological Site

• The archaeological zone of Tsja is located 55 kilometers southeast of Campeche, situated in a northern valley surrounded by hills.

• The Mayans constructed hydraulic systems for irrigation and drainage to prevent flooding, essential for their agricultural practices.

Historical Context

• The first written information about Tsja dates back to the early 1900s. Restoration efforts began in 1958 but often altered original structures, leading to loss of historical characteristics.

• A significant central plaza exists within the site, bordered by a large grandstand known as 'nuevo', with staircases leading up to the Great Acropolis.

Architectural Features

• The Great Acropolis features several temples, including the main temple called "temple of five floors," which stands approximately 30 meters tall.

• There is also a smaller area known as the Little Acropolis surrounded by smaller pyramids.

Cultural Significance

• The development of this zone was linked to astronomy; temple positions corresponded with celestial phenomena like spring and autumn equinoxes.

Acoustic Measurements and Equipment Used

• An initial exploration allowed for acoustic measurements using various equipment: portable sound recorder, environmental thermometer, balloons for sound sources, and video cameras.

Methodology for Acoustic Study

• Five positions were determined around the archaeological site for balloon placement as sound sources during measurements.

• A total of 21 recording points were established using a portable recorder at different locations around these sound sources.

Data Collection Process

• Background noise was measured at 30 decibels; adjustments were made on recording equipment to ensure optimal signal capture without saturation.

Measurement Techniques

• Recordings followed specific standards (ISO 3382), ensuring proper distance from reflective surfaces during impulse response measurements.

Analysis Considerations

• The central plaza was identified as a primary sound emission point due to its likely use for recreational activities; recordings were taken from multiple surrounding points.

Final Recording Details

Acoustic Analysis of Archaeological Sites

Initial Signal Analysis and Background Noise Reduction

• The initial analysis of signals was conducted using McLaren software to process and eliminate existing background noise.

• This processing led to the extraction of relevant acoustic parameters, marking a significant step in the exploratory work aimed at identifying key areas within the archaeological site.

Identification of Key Areas for Acoustic Measurement

• The exploration revealed large open spaces believed to have been used for mass events, indicating their importance in the site's historical context.

• Sound sources were strategically placed in relevant positions around these areas, with 21 points recorded for acoustic parameter analysis.

Findings on Acoustic Phenomena

• Post-analysis indicated the presence of significant acoustic phenomena surrounding the archaeological zone.