The BYTE Book of Computer Music by Christopher P. Morgan

By Christopher P. Morgan

Would-be musicologists and fugue fanciers take note!
The BYTE publication of desktop track combines the easiest computing device song articles from previous problems with BYTE journal with fascinating new material-all written for the pc experimenter attracted to this interesting field.
You will take pleasure in Hal Chamberlin's "A Sampling of ideas for machine functionality of Music," which indicates how one can create four-part melodies in your machine. For the price range minded, "A $19 track Interface" comprises functional instructional information-and organ fanatics will take pleasure in analyzing "Electronic Organ Chips to be used in laptop track Synthesis.'
New fabric contains "Polyphony Made effortless" and "A Terrain Reader:' the 1st describes a convenient circuit to be able to input multiple observe at a time into your machine from a musical keyboard. The "Terrain Reader" is a amazing software that creates random tune according to land terrain maps.
Other articles diversity from flights of fancy in regards to the reproductive platforms of pianos to speedy Fouriertransform courses written in uncomplicated and 6800 computer language, multi-computer tune platforms, Walsh capabilities, and lots more and plenty more.
For the 1st time, fabric tricky to procure has been amassed into one handy, effortless to learn ebook. An ardent do-it-yourselfer or armchair musicologist will locate this ebook to be an invaluable addition to the library.

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Extra info for The BYTE Book of Computer Music

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The key signature is the shorth~nd ~sed by musicians to specify the key at the beginning of each line of music : This tells the person playing the music that all of the Es, As, and Bs should be played one half step flat. Third, the major and minor modes sound different because different intervals are used for the third, sixth, and seventh. Fourth, the two most dissonant intervals, the minor second and the tritone, are not used in any major or minor key, but are needed for some key changes. Fifth, and perhaps most important for implementation on a "dinky" computer and for experimentation, is that the only prime numbers used in the pure pitch ratios are 2, 3, and 5.

In contrast, the powers of the twelfth root of two may be obtained from the moderately ex- pensive "top octave" integrated circuit, or calculated (but not accurately) in real time by the dinky itself. In the latter case there will be little computer power left for calculating the melody or harmony. From Music to Mathematics and Back Again Webster defines inversion of a musical interval as: "A simple interval with its upper tone transposed an octave downwards ... " A mathematical inversion Webster defines as: "A change in the order of terms of a proportion ...

The first rank is stored in locations 2001 through 2030. The second rank is stored in locations 3001 through 3030. Remember that the area set aside for each rank is larger than the actual space necessary (here three times as large) . There are two stop switches, stored in locations 4001 and 4002. There are two couplers. They are stored in 4003 and 4004. The first couples up five pipes high, the second down three pipes low. When the low order bit in 4001 is on (or high), the program adds 2010 to the key address to get the pipe address.

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