Engineering and technology notes

Zaide – Mozart

Jovan Stosic March 13, 2019

Zaide (originally, Das Serail) is an unfinished German-language opera, K. 344, written by Wolfgang Amadeus Mozart in 1780. Emperor Joseph II, in 1778, was in the process of setting up an opera company for the purpose of performing German opera. One condition required of the composer to join this company was that he should write a comic opera. At Salzburg in 1779 Mozart began work on a new opera (now known as Zaide although Mozart did not give it such a title). It contains spoken dialogue, which also classifies it as a Singspiel (literally, “singing play”). Only the arias and ensembles from the first two acts were composed. Missing are an overture and third act.

https://en.wikipedia.org/wiki/Zaide

VPN: How to Setup and Use SSH Tunneling

Jovan Stosic March 13, 2019

Windows

  1. Download PuTTY and open the program.
  2. In the “Host Name” box, enter the address of your VPN.
  3. In the menu tree to the left, unfold “SSH” and click on “Tunnels”
  4. Enter 8080 as the port. Make sure both “Auto” and “Dynamic” are selected, then click “Add”
  5. Click “Session” on the left menu to back to the main screen.
  6. Type a name in the top box beneath “Saved Sessions”, then click “Save”
  7. Click “Open” to connect to the server.
  8. A PuTTY security alert window will open. Click “Yes”
  9. Enter your server username and password and press ENTER.

Linux/MAC

ssh -ND 8080 user@your.server.com

 

Source: VPN Doesn’t Work: How to Setup and Use SSH Tunneling

Solfège

Jovan Stosic February 23, 2019

In music, solfège (UK: /ˈsɒlfɛdʒ/, US: /sɒlˈfɛʒ/; French: [sɔlfɛʒ]) or solfeggio (/sɒlˈfɛdʒioʊ/; Italian: [solˈfeddʒo]), also called sol-fa, solfa, solfeo, among many names, is a music education method used to teach pitch and sight singing of Western music. Solfège is a form of solmization, and though the two terms are sometimes used interchangeably, the systems used in other music cultures such as swara, durar mufaṣṣalāt and Jianpu are discussed in their respective articles.

Syllables are assigned to the notes of the scale and enable the musician to audiate, or mentally hear, the pitches of a piece of music which he or she is seeing for the first time and then to sing them aloud. Through the Renaissance (and much later in some shapenotepublications) various interlocking 4, 5 and 6-note systems were employed to cover the octave. The tonic sol-fa method popularized the seven syllables commonly used in English-speaking countries: do (or doh in tonic sol-fa), re, mi, fa, so(l), la, and si (or ti), see below).

There are two current ways of applying solfège: 1) fixed do, where the syllables are always tied to specific pitches (e.g. “do” is always “C-natural”) and 2) movable do, where the syllables are assigned to scale degrees (“do” is always the first degree of the major scale).

https://en.wikipedia.org/wiki/Solf%C3%A8ge