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dimecres, 24 d’abril del 2013

Audio P-3


Good morning!
I am getting used to post in English and every day I think it's more useful.

In this new practice we are going to work with the tone generation and the frequency of tones. As you should know from last year, frequency stands for the number of cycles that a wave performs in a second. The inverse of frequency, period, stands for the time that a cycle needs to come back to its beginning. Finally, wavelenght stands for the distance between to wave peaks, understanding peaks as the highest point of each wave.

So, in music, for example, we know frequency values (in hertz) of each note:
Do: 261,63 Hz
Re: 293,66 Hz
Mi: 329,63 Hz
Fa: 349,23 Hz
Sol: 392 Hz
La: 440 Hz
Si: 493,88 Hz
Do (octave): 523,25 Hz

In audacity, we can add a lot of tracks and combine them in timeline, as we have seen in last practice. The objective of this second is to build, in tones, the melody of Frère Jacques (the most known French song). You will have to set up the lenght (in seconds) of each tone. For example, for the white notes use 1 second lenght, and for the black ones, use 500 ms (0.5 s)

Let's work!

Xavi

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