Visual Feature Hierarchy - APC40

Top view of Akai APC40

Top view plus annotated control groupings

The Akai APC40 is a multifunctional piece of music making hardware designed for performing DJs. The equipment as a whole, and its subcomponents (knobs, buttons, and faders), correspond directly to the DAW (Digital Audio Workstation) Ableton Live. 

The large array of buttons, knobs, and faders on the APC40 are arranged to correspond with their function within Ableton; for example, the large 8x8 grid of squares in the upper-left of the device are each assigned to sounds or loops within Ableton, and are activated when pressed. Thus, highest in the visual feature hierarchy of the object is spatial layout. 

Next down the feature hierarchy chain is shape. Each control has a unique shape that corresponds to the function under its command. Faders are sliding rectangles, volume controls are round knobs that turn, and squares activate sound as well as other functions. 

Finally, color is the last visual feature used in the object's hierarchy. When an effect, noise, loop, or track is activated in the program, the corresponding button, knob, or fader is illuminated on the hardware. Green signifies active, red signifies stop, and flashing red signifies about to stop. 

The Akai APC40 with all its functionality must make use of visual feature hierarchies and does so excellently. 

The Rock Stadium, by MZ Architects is an example of effective visual syntax guidelines. The stadium, soon to be built in the UAE, displays use of balance as well as positive and negative space. The balance used in the structure is level; there are clear visual axises that are effective in the structures function. The balance draws clear lines to the openings of the structure, and allows for the smooth transition from desert to roof in a single plane. The stadiums positive/negative balance is also important for its function. The positive space creates protection from the harsh desert sun, while the negative space lets light shine down upon the field.

Eolica, by Fran Silvestre Arquitectos, is an example of ineffective visual syntax guidline use. The tower which is intended to allow for spectacular views across the reflecting pool from the towers top, actually prevents views because of its sharp, unbalanced, angle of viewing.