Overtone

Golden Software Surfer 11 Portable — Quick

Calculating cut-and-fill volumes for construction sites.

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Compute the cut-and-fill volume between two surfaces, essential for civil engineering and mining applications. Best Practices for Using Portable Software To ensure the best performance with Surfer 11 Portable: golden software surfer 11 portable

QGIS offers a portable version via . Once installed, add the GRASS plugin and the r.contour or r.surf.contour modules. While not as polished as Surfer for variograms, it handles 95% of gridding tasks. Cost: Free.

Key capabilities that matter

Structural frameworks showing the skeleton of a terrain or data surface.

If you need portable gridding capabilities without legal or security nightmares, consider these legitimate options: Calculating cut-and-fill volumes for construction sites

Field geologists collecting raw borehole or topographical data can insert a portable drive into any local field laptop. They can instantly grid the XYZ coordinates to check for data gaps before leaving the survey site, omitting any software installation delays. 2. Multi-Workstation Academic Environments

Create detailed contour maps with customized intervals. Once installed, add the GRASS plugin and the r

Examples

In synthesizer experiments you select the amplitudes and phases of the fundamental and 9 overtones to construct the beginning of a Fourier series. The sum is seen on a graphics display and the signal is available as sound card output.

golden software surfer 11 portable

golden software surfer 11 portable

golden software surfer 11 portable

You can test the Helmholtz assumption that the relative phases of the overtones are irrelevant to hearing.

In analyser experiments you capture sound from the sound card or from a WAV file up to several seconds long, select the starting time of the time slice and analyse time and frequency responses. The example shows the spectrum of a piano playing a middle C (262 Hz). The non-harmonic overtones are clearly seen. (Due to the stiffness of the string, the frequencies of the partials are too high.)

golden software surfer 11 portable

You may filter data with a digital filter and display spectrograms in color mode. This example shows the spectrogram taken from the word "harris" in the frequency range 0..10 kHz with a 4096-point-FFT every 2 ms (post processing). The formants of "i" and the high spectral components of "s" are clearly visible.

Sonogram

Short time spectral information may also be displayed in a 3-D representation, called "waterfall". The following example shows the waterfall spectrum of the same word "harris" as before. The red layer picks out the spectrum of "i" where the formants are visible again. The presentation may be rotated automatically or manually with scroll bars, in order to select the best "camera point".

golden software surfer 11 portable

Download version 1.15, June 2009: OVERTONE.ZIP (1.55 MB)

Unpack in a new folder, read README.TXT and start OVERTONE.EXE
(Some firewalls or User Access Control (UAC) may block execution. Give OVERTONE the necessary permissions.
Make sure, that the sound device is not used by another application.)

For more information, send e-mail to address given in README.TXT

Unterrichtseinheit Analyse von Klangspektren von Alain Hauser (in German)