Due to slight halation of the light source, digital C-prints produced on high end equipment have true continuous tones not possible with images created with ink or pigments.
32.
"' Halftone "'is the reprographic technique that simulates continuous tone imagery through the use of dots, varying either in size or in spacing, thus generating a gradient-like effect.
33.
The nominal tone level is-24 dBm0 ( decibels relative to 1 mW measured at the 0 dB TLP ) with limits of ?.5 dB measured with a continuous tone.
34.
Continuous tone can be achieved with graphite on a smooth surface without blending, but the technique is laborious, involving small circular or oval strokes with a somewhat blunt point.
35.
The system in turns warns the driver with acoustic tones, the frequency indicating object distance, with faster tones indicating closer proximity and a continuous tone indicating a minimal pre-defined distance.
36.
Gimp and Photoshop both have a " find edges " filter which, with a bit of tweaking, can turn some continuous tone pictures into something similar-ish to a line drawing.
37.
And going into a room I think they'd probably make a click or pip noise rather than a continuous tone to determine its overall size, it certainly works better for me.
38.
In order to get the transmitter to key reliably, sometimes the continuous tone that holds the transmitter on may have to be set so it is heard in the transmit audio.
39.
Since modern computers can often display more than twice as many dots and far more colors, the compromises here occasionally prove disappointing, particularly with continuous tones such as flesh, sky or water.
40.
It is a single continuous tone with a frequency of either 1800 Hz or 550 Hz, sent at a level of-6dB or-3dB, respectively, below the level of the transmitted data signal power.
