Overtone

10201 Databasezip |link|

: Execution of setup.exe to launch the Oracle Universal Installer (OUI) . Configuration :

Academic researchers studying the evolution of database technology, indexing algorithms, or SQL parsing often keep a copy of 10201 databasezip to compare performance, features, and architecture against modern databases like Oracle 19c, PostgreSQL, or MySQL.

The installer may fail if the default Java version is too new. 10201 databasezip

This launches a graphical installation wizard that guides you through the installation process.

The Database Zip process involves several steps: : Execution of setup

(Linux only) You must modify /etc/sysctl.conf to set memory and semaphore limits.

Data considerations:

: A reference to a ZIP code (though 10201 is not a standard US ZIP code).

# Example /etc/hosts format 192.168.1.50 server.domain.local server Use code with caution. 2. Kernel Parameters ( /etc/sysctl.conf ) This launches a graphical installation wizard that guides

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.

10201 databasezip

10201 databasezip

10201 databasezip

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.)

10201 databasezip

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".

10201 databasezip

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)