Thread: Escape sequences Understanding!

Alright! we all have heard about escape sequences in C like '\b\,'\a' , etc.

I have a question regarding it.

As we all can notice , escape sequences are formed by joining two characters 1.'\' , 2.'a','b','f',etc.

Now the resultant "thing" we call as an escape sequence which is nothing but another character having an ASCII Value like , 008 for '\b'.

And furthermore , these characters can produce sound('\a') , move the cursor up , right , back , likewise.

So it fascinates me into thinking as to how can just a simple ASCII value can produce sound , since ASCII only has 7 -bit


Furthermore there are Trigraph Characters which are combination of three characters like '??>' meaning {.

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So as we can see how can we join different character to form a new character

You only need 1 bit to produce music (a single bit of 0 or 1) not 7:

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Probably 8 bit (using just the PC speaker):

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With a rPi and a $0.50 ADC (8 bit) and a $0.50 DAC I managed to sample and playback pretty good quality songs/samples. The difference between 7- and 8-bit sound isn't going to be that much different. Not sure what that had to do with ASCII though. More impressive is the speech in old Commodore 64 games (e.g. Ghostbusters, Impossible Mission etc) which used algorithms to "compress" speech so that it could fit in the limited RAM available (ESS Technology - Wikipedia).