frequency of each musical notes

[twiart]

Hello guys,do you know how to generate this table? https://i44.tinypic.com/4tok05.jpg

How to calculate actual frequency for each note in different octave,and how do we know the divider for each note,are they fixed? Thanks in advance.

 

[Nigel Goodwin]

Each octave is twice the previous one, it's a simple mathematical progression.

 

[twiart]

Each octave is twice the previous one, it's a simple mathematical progression.

What about the divider value for each note?

 

[Hero999]

Musical tuning - Wikipedia, the free encyclopedia

 

[KMoffett]

What about the divider value for each note?

That was the principal for the long obsolete (think I still have one) Mostek MK50240 a top octave generator. One IC generated all the notes in the top octave, and dividers were used to produced all the notes in the lower octaves.

Ken

 

[Hero999]

It's easy to build an oscillator using a Schmitt trigger.

You could use two hex Schmitt trigger ICs to get 12 different frequencies and divide them down using a divider.

I think an MCU is a better option but as this a college project it'll probably be forbidden.

 

[flat5]

In the equal tempered scale the notes are separated by the 12th root of two. (1.059463094)

So, A being 440, A# is 440 X 1.059463094 = 466.1637615

Multiply A# by the magic number and you get B.
Keep going 12 times and you get the octave of A - 880

On a calculator, take the log of 2, divide it by 12 and take the anti log to get the magic number.