Visualize an audio signal Use the scope~ object to visualize and audio signal using an oscilloscope-style display. Cycling '74 MSP MSP U/I (signal) X Display, int Sets Buffers Per Pixel TEXT_HERE (signal) Y Display, Samples Per Buffer TEXT_HERE Function depends on inlet Left inlet: Number of samples collected for each value in the display buffer. Smaller numbers expand the image but make it scroll by on the screen faster. The minimum value is 2, the maximum is 8092, and the default initial value is 256. In X or Y mode, the most maximum or minimum value seen within this period is used. In X-Y mode, a representative sample from this period is used.

Right inlet: Size of the display buffer. This controls the rate at which scope~ redisplays new information as well as the scaling of that information. If the buffer size is larger, the signal image will stay on the screen longer and be visually compressed. If the buffer size is smaller, the signal image will stay on the screen a shorter time before it is refreshed and will be visually expanded.

It might appear that the samples per display buffer element and the display buffer size controls do the same thing but they have subtly different effects. You may need to experiment with both controls to find the optimum display parameters for your application. Click to freeze the display for as long as you hold the click TEXT_HERE Function depends on inlet Left inlet: signal to display on the X axis of the oscilloscope
Right inlet: signal to display on the Y axis of the oscilloscope

If signal objects are connected to both the left and right inlets, scope~ operates in X-Y mode, plotting points whose horizontal position corresponds to the value of the signal coming into the left (X) inlet and whose vertical position corresponds to the value of the signal coming into the right (Y) inlet. If the two signals are identical and in phase, a straight line increasing from left to right will be seen. If the two signals are identical and 180 degrees out of phase, a straight line decreasing from left to right will be seen. Other combinations may produce circles, ellipses, and Lissajous figures. Background Color Sets the background color in RGBA format. TEXT_HERE TEXT_HERE Buffer Size Number of samples stored in the buffer Calccount - samples per pixel Sets the number of samples per pixel to display Onset Delay Delay between each "trace" of oscilloscope in milliseconds Drawing Style Toggles an alternate drawing style which may make some waveforms more easily visible Phosphor Color Sets the phosphor color in RGBA format. The fgcolor attribute is mapped to the color style color. Grid Color Sets the grid color in RGBA format. The gridcolor attribute is mapped to the elementcolor style color. Lo and Hi display range (Y-axis) Minimum/maximum amplitudes displayed vertically TEXT_HERE TEXT_HERE Style Sets the style to be applied to the object. Styles can be set using the Format palette. Trigger mode Trigger mode determines when a new waveform trace begins (following the delay ).
trigger 1 sets an upward trigger in which the signal must go from being below the triglevel to being equal to it or above it.
trigger 2 sets a downward trigger in which the signal must go from being above the triglevel level to being equal to it or below it.
The default trigger mode is 0, which does not wait after a non-zero delay period before collecting samples again. TEXT_HERE TEXT_HERE TEXT_HERE TEXT_HERE TEXT_HERE TEXT_HERE Trigger threshold Threshold to trip trigger mode. When trigger mode is 1 or 2, the waveform must increase or decrease past this value to trigger a new trace. If you are displaying a periodic waveform, slight changes to the trigger level will shift the waveform to the left or right. Visual peak level indicator The waveform of the incoming signal is displayed within the oscilloscope display.