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- Music Analyzer
-
- February 1995
-
-
- Music Analyzer is a little useless program for the Atari Falcon. It takes
- the incoming data from the AD-Converter and uses the DSP to analyze it. This
- means that it calculates a 14-band frequency spectrum for both channels.
- On the screen you can also see two vu-metres and two oscilloscopes.
- New in this version is the small left vs. right scope.
-
- The program should run on all VGA monitors and RGB monitors and TVs, but on
- a VGA monitor it looks much better! (no interlace)
-
- The average screen update frequency is about 20 Hz. The speed depends a lot
- of the input level. The screen update frequency is about 25 Hz when there's
- no input signal at all. But then there's not much to see either :-)
-
- In the directory SOURCE you'll find all the (assembler and pascal) sources
- necessary to compile the program. (The program itself is written in full
- assembler, the little pascal programs are for calculating log tables etc.)
- Also included is the program to calculate the fir-filter coefficients (written
- in C).
-
- The assembler I used is the assembler in the Turbo C package. For the pascal
- programs I used Pure Pascal. (Don't think I'm that rich that I can afford
- these programs (I'm only a poor Physics student), but my father does some
- programming too...)
-
- Some people asked me if I couldn't let Music Analyzer run under GEM. But I
- think that this will have the same effect as changing the Falcon clock
- frequency from 16 to 2 MHz. But if you want to try this yourself, you can;
- the sources are included :-)
-
- Running the program under MultiTOS gives no problems (as far as I know),
- it even doesn't run any slower. But you won't be able to switch task.
-
- Well, there's not much more to say. You can use the sources for your own
- programs if you like (else I wouldn't give them to you) and you may copy
- the program and give it to all Falcon owners you know. Don't forget to give
- them the sources too!!
-
- For some more information start the program NOW and press HELP.
-
- That's all
-
- Roel van de Kraats
- Beekweg 10
- 3881 LH Putten
- The Netherlands
- email: rkraats@dds.nl
-