Msb And Lsb - Kurzweil K2661 Musician’s Reference Manual

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SysEx Control of KDFX

MSB and LSB

Here's an example, which sets a value of 50% for the Wet/Dry mix of the effect on the Aux bus.

We've included both hexadecimal and decimal values.

The K2661 can accept either unsigned (positive only) or signed (positive and negative) values.

Unsigned values can range from 0 to 255, and signed values can range from -128 to 127. Both of

these ranges require eight bits of MIDI information. Since each byte of MIDI information

contains only 7 meaningful bits, you need two bytes to send eight bits of information. The K2661

interprets these bytes as a two-byte pair and not as unrelated bytes. The ﬁrst byte, called the

most-signiﬁcant byte (MSB) sets the general range of the value, while the second byte (the least-

signiﬁcant byte or LSB) sets the speciﬁc range. The following table shows several decimal values

and the corresponding MSB-LSB hexadecimal values.

Decimal Value

Corresponding

Hexadecimal Value

Corresponding SysEx Command