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Documentation

* Help System is automatically installed with the program

Video Tutorials

Product Updates

Below, please find an overview of the improvements and new features introduced in SeismoSignal over the years; do familiarise yourself in particular with those introduced in this latest release.

New features

1.  New Pulse identification module

2. Introduced Standarised Cumulative Absolute Velocity CAVSTD parameter in the ‘Ground Motion Parameters’ module

3. Support for the ESM format for opening accelerograms

Bug fixes

Some minor bug fixes.

New features

1. Support for the .eq files output by the SHAKE software for opening accelerograms

2. Introduced Number of Effective Cycles, Damage Index, IP index, Average Spectal Acceleration and Maximum Incremental Velocity in the ‘Ground Motion Parameters’ module

3. Introduced the option of acausal filtering of accelerograms

Bug fixes

Several minor bug fixes.

New features

1. Connection to the most well-known on-line earthquake record databases

2. Support for the SMC and the PEER NGA formats for opening accelerograms

3. Easier opening of the record files with automatic detection of the end of file

4. Ability to save and load the plot settings in the post-processor plots, which makes very easy the exportation of the format of one graph to the others

Bug fixes

Several minor bug fixes.

Minor updates and bug fixes

1. Updated the set of exemplificative accelerograms included with the program

2. Changed the default value of the first and last line in the ‘Input Parameters’ dialog box

3. Corrected bug that was leading to spurious (very large) values at the tail of the Fourier Spectrum

4. ‘Filter Gain’ plot now correctly indicates as upper-bound filtering frequency a value that is 1/2 of the record’s time-step frequency

5. Changed the default value of the Maximum dt/T paramenter in the ‘Program settings’ dialog box

6. Added links to the Video Tutorials and to the Discussion Forum both in the menu and in the toolbar

7. Minor updates to Help System

New features

1. Increased the maximum allowed number of accelerogram data points from 2^15 (still the maximum for Fourier and Power spectra analysis) to 2^18, i.e. 262144 points

2. Enabled the visualisation of Ground Motion Parameters for both unfiltered and filtered records

3. Introduced possibility of users saving the computed spectra (in a format compatible with SeismoSpect and SeismoMatch)

4. Introduced the possibility of using comma as decimal separator

5. Created a user defined default directory for input accelerograms (as well as one for saving data)

6. Introduced in the General Settings the possibility of disabling background shading of plots (useful for printing purposes)

Other minor updates

1. Extended coverage of cases where user is advised to save the file in DOS/Windows text format before trying to open it in SeismoSignal

2. Default decimal places changed to 5 (amongst other things, to facilitate reproduction of results when reopening and reprocessing saved records)

3. Introduced in the Help System two additional references to publications discussing issues of record filtering, plus other minor changes

4. Locked data copying and saving for unregistered users

Minor bug fixes

1. The decimal places settings were not being applied to spectra data

Minor updates

1. Pop-up advice to users on what to do when academic license email cannot be sent

2. Avoid false virus warnings (mainly Nod32), and incompatibilities with background monitoring software DeepFreeze

3. Updated Help System to note that ‘Total Duration’ is used in the calculations of a number of ground motion parameters and also to clarify criteria employed in the computation of SMA and SMV

4. Introduced Housner Intensity in the ‘Ground Motion Parameters’ module

5. Changed default dT and minT valus to 0.1 seconds

6. When reading an input file, consecutive values separated only by a “-” sign are now adequately recognised

7. Corrected minor bug in the definition of maximum and minimum values for the vertical axis of time-history plots

Minor updates to the registration and licensing modules. Corrected bug related to the occurence of a ‘Range Check Error’ when one sets the maximum period of interest to 9 seconds or higher and then activates the constant ductility inelastic spectra option.

Updated Help System and software licensing facility introduced in the program. Minor changes in the terminology employed in the ‘Elastic/Inelastic Response Spectra’ module.

New features

1. Option in the Settings to define the number of decimal places used for the Ground Motion Parameters

2. User-defined ductility convergence tolerance (for computation of inelastic constant-ductility spectra)

3. Milli-g and micro-g acceleration units (for ambient vibration signal processing)

4. Advanced spectra computation parameters moved into Program Settings menu

5. Tabled ‘Fourier phase’ output

Minor bug fixes

1. Some Ground Motion Parameters involving units (e.g. CAV, Vmax/Amax, etc) were not taking proper account of the actual units chosen by the user when he/she opened the accelerogram (e.g. a factor of ‘g’ was often missing)

2. The units in the ‘Response Time Histories’ were always shown as “cm”, independently of the units actually being employed

3. The computation of ‘effective duration’ was not based on the absolute values of the Arias Intensity

New features

Default filtering and baseline correction of loaded accelerograms has been removed (users will need to explicitly activate this functions, when so required).

Bug fixes

Minor bug fixes to the Graphical User Interface.

New features

New Baseline Correction and Filtering module, with enhanced user-flexibility and power features such as ‘Filter Gain’ plotting, definition of multiple baseline correction polynomial functions and contemporaneous visualisation of uncorrected and corrected time-histories and results. Support for US (Imperial) system of units. Re-designed Elastic/Inelastic Response Spectra module, now featuring the computation of overdamped inelastic response spectra for up to 7 different levels of damping. Addition of two new ground motion parameters (Mean Period and Predominant Period) together with the possibility of exporting Husid and Energy Flux plots data points. Facilitated access to accelerogram manipulation tools such as ‘Scaling’ and ‘Time-step change’. Possibility of exporting into a text file the displacement, velocity and acceleration time- histories. Other minor enhancements.

Bug fixes

Minor bug fixes to the Graphical User Interface.

New features

New graphical user interface with easier access to program facilities and easier definition of the acceleration time-history. New filtering capabilities. User-defined input/output units system. Calculation of new ground-motion parameters, including the Sustained maximum acceleration (SMA) and velocity (SMV), the Characteristic Intensity (Ic), the Cumulative Absolute Velocity (CAV) and many more. Computation of the Power Spectral Density Function. Ability to modify (scale or change the time-step) and to save as text file the acceleration time-history. Recent files’ list.

Bug fixes

Baseline correction and long period filtering applied when carrying out integration of time-histories.

SeismoSignal has been programmed from scratch, and in its entirety, at SeismoSoft, using the Delphi Pascal Integrated Development Environment.