Tone generator

Highest note define the position of chord.

Laryngologists use tuning forks in 432Hz becouse that's the frequency human body transcribes the best.

Chords contain tierces (thirds).

Some artists use oscilloscope waveforms to make certain patterns. They are able to create eye-catching mandalas or floral shap...

Drum sounds can't be compononents of a chord. Chords can only consist of certain notes.

In 1897 german physicist K.F.Braun engineered the first oscilloscope.

Chord consists of minimum three diffrent notes.

The first of real time computer games was made for oscilloscope. "Tennis for two" was programmed by William Higinbotham in 1958....

Following the discovery of fast Fourier transform, in 1962 the first spectrum analyzer was engineered.

Oscilloscopes are used to observe the change of electrical signal over time.

There are two types of spectrum analyzers: swept-tuned and time-sequence.

There are two type of chords- consonant chords and disonant chords.

Osciloscopes are used not only in the audio (music) industry, but also science laboratories, hospitals and clinics.

Since 1939 binding sound for pitching musical instruments is in 440Hz frequency. Formerly it was 432Hz.

Tuning fork was invented by lute musician.

Nowadays there are many kinds of spectrum analyzers: stationary, portable, handhled and networked.