Roland SC-88 Pro Uživatelský manuál stáhnout pdf (Strana 10)

compatibility is limited, but if this map 0 and controller #32 issue are not properly understood,

then upward compatibility will never be achieved!

With three maps being used by Sound Canvas users, three different sonic results are possible.

Sequences originally created for an SC-55 simply require a controller #32 = 1 event prior to

each patch event in each track to guarantee they will always sound like an SC-55 sequence no

matter what Sound Canvas plays them back.

SC-88 Sequences simply need to add 2 to the Normal bank value or change controller #32

from 0 to 2 prior to each patch call and they too will always sound like an SC-88 sequence on

any SC-88 or higher Sound Canvas.

Lastly if SC-88 Pro sequences shifted their SC-88 Pro bank values up by 3 or changed

controller #32 from 0 to 3 prior to patch calls, then they too would remain forever on every

future Sound Canvas a consistent sonic file always sounding like an SC-88 Pro.

If you understand your unit very well and you understand your sequencer very well and if you

understand the terminology used for bank switching, then you already know all you need to

know to write upward compatible sequences. However, that is a lot of ifs. If you only know

your sequencer, your Sound Canvas, and MIDI terminology well enough to use what you need,

then implementing this information might be difficult.

In fact, depending on how your sequencer works, a deep intimate knowledge of MIDI and your

Sound Canvas might still leave you in the dark. So in the chapter 3 we will look at this step by

step from three different scenarios.

Three Obstacles

There are actually three obstacles to compatibility between the three generations of Sound

Canvases. One of them is unalterable but the other two are easily remedied. The first obstacle is

the fact that the lower models do not have all the capabilities of the upper models. This of

course creates an incompatibility that can not be helped. Backward compatibility will be limited.

The second obstacle to compatibility is that the SC-55 unlike its brothers does not require

Normal bank switching to be fully exploited. However, since it can respond correctly to Normal

bank switching and since it can ignore controller #32, SC-55 users can create files that sound

correct on SC-88’s and SC-88 Pro’s.

The third obstacle is a misuse of map 0. Even though the SC-88 and the SC-88 Pro both use

normal bank switching, the practice of always using map 0 causes a mapping inconsistency

between them. This problem is further confused by the fact that SC-55 files that have not been

“corrected” for upward compatibility, also use the unstable map 0 on all higher units instead of

the SC-55 map.

In chapter 3 we will take a step by step explanation of several ways to implement the simple

solution around these obstacles for each of the three generations of Sound Canvas.

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Roland SC-88 Pro Uživatelský manuál Strana 10