Easy HVSR 1.0

Easy HVSR by GeoStru is a dedicated tool for single-station microtremor analysis using the Horizontal-to-Vertical Spectral Ratio (HVSR/Nakamura) method. It helps geotechnical and geophysical professionals quickly identify a site’s fundamental resonance frequency and estimate amplification characteristics for tasks such as seismic microzonation, preliminary site response screening, and foundation or building assessments.

Key capabilities:

• Intuitive workflow: Import ambient vibration recordings, preprocess, analyze, validate, and report in a guided sequence suitable for field and office use.
• Robust preprocessing: Demeaning, detrending, filtering, and window selection with controls to exclude transients and nonstationary segments.
• Standards-aligned processing: HVSR computation following widely adopted guidelines (e.g., SESAME), including Konno–Omachi smoothing and geometric averaging of horizontal components.
• Clear results: Automatic and manual peak picking to determine fundamental frequency (f0) and amplification (A0), with confidence indicators and quality control metrics to assess reliability.
• Visualization tools: Time histories, spectrograms, power spectral densities, and H/V curves with dispersion of estimates for transparent interpretation.
• Quality and traceability: Comprehensive metadata handling and repeatable settings to ensure consistent, defensible outcomes across multiple surveys.
• Efficient reporting: Professional plots and summaries ready for inclusion in technical reports, plus data export for further analysis in third-party tools.

With a user-friendly interface and a focus on reliable, standards-consistent results, Easy HVSR streamlines ambient noise measurements from raw data to actionable insights, helping practitioners make informed decisions about local site effects and seismic response.

Easy HVSR is developed by geostru. The most popular versions of this product among our users are: 0.0 and 1.0. The name of the program executable file is EasyHVSR.exe.