Erasmus+ arteducation.eu Upper secondary RO2 Time frequency

1. In Physics, the inverse of the period
(timeframe) is frequency.
With the help of frequency we can
characterize sounds and colors.
So:

2. THE SOUND

3. THE SOUNDS
and noises of every kind and origin are distinguished by
three major characteristics:
height, strength (intensity) and timbre.
The three characteristics are not independent.
At the level of perception,
strength and height affect each other.

4. The sound emitted by a source is complex because,
apart from sound fundamental
and different sound sources emit harmonics
(sounds that have frequencies equal to multiples of
the fundamental frequency of the sound).

5. A sound analysis of the structure allows for a
spectrum characteristic of each source
(so-called fingerprint noise).
This property allows individuals by voice recognition.

6. Sounds height refers to the frequency of vibration
of a column of air,
strings or membranes that produce sound.
This characteristic sound is relative,
depending on the height of a reference tone,
with increasing frequency and increasing height.

7. The process which assigns names of different heights
notes (frequencies) is called the award.
In contemporary music,
tuning is performed so that the frequency of 440Hz
match the grade La (A).

8. While the basic fundamental frequency
or pitch of sound can be determined precisely by
means of measurements may be different
from the height perceived by the human ear due to the
emergence harmonic vibration.

11. NOW GO PLAY WITH THE
SOUNDS!