![]() OsciStudio users can modify sounds through a small plugin system and animate parameters through timelines.īut it’s also possible to generate audio files for creating audio for Lissajous patterns without buying any software or even without having access to a real oscilloscope. OsciStudio can accept files from basically any 3D image editing programs that generate OBJ-type files. Figures of animals imported into OsciStudio can be animated to see how the act of walking affects the necessary sound. OsciStudio as well lets the user rotate or otherwise change the imported geometry to see how, for example, changing the viewpoint changes the sound needed to generate the image. As Raber describes it, OsciStudio then equivalently figures out the mathematics of “how to draw the object with a pen but without lifting the pen off the paper.” The idea is to generate 3D images in a graphics program (such as the free Blender program), then send the resulting file to OsciStudio. Fenderson and his collaborator Hansi Raber have developed commercially available software called OsciStudio (about $40) for converting 3d shapes and animations into sounds. Fenderson has posted a number of YouTube videos showing his work and has even published albums of oscilloscope music. Among the most prominent is Jerobeam Fenderson in Austria. At bottom is a scene from the Quake video game.There are even musical artists using oscilloscopes as their medium. More mushrooms can be made to appear by randomly adding square waves.Ī few geometries created by judiciously feeding specific waveforms to the scope X and Y inputs. The number of mushrooms displayed can be increased by dividing the frequency of the cosine by two or three. The mushroom can be made to move by adding to the left channel another sawtooth multiplied by a cosine of a slightly different frequency. ![]() The display can be turned into the shape of a mushroom by multiplying the left channel with a sine wave of the same frequency as the sawtooth while only using the last quarter of the sine wave. Adding a sawtooth wave to the right channel makes the circle turn into a spiral. The size and shape of the circle can be adjusted by boosting or softening the volume of the two channels. So scope viewers both see geometric shapes and get serenaded by a lot of odd-sounding electronic-style “music.” To see how geometric shapes might arise, consider the previous example of the circle. The usual approach for these projects is to use signals in the audio range. The original images were created by the visual artist Jerobeam Fenderson. A YouTuber known as CuriousMarc displayed the mushroom images described in the text along with the actual waveforms used to create them (lower scope). One energetic enthusiast has even created scenes from the Quake video game that display on a scope. There is even a reddit channel devoted to oscilloscope music. The metrics typically of interest in a Lissajous pattern include frequency, ratio, relative amplitude and phase shift.īut in recent years, Lissajous patterns have become a source of entertainment on destinations such as YouTube thanks to a subculture of technologists interested in generating geometric figures on scope displays in the X-Y mode. Normally, engineers setup Lissajous patterns to get information about the relationship between the two signals driving the X and Y axes. Of course, the resultant image is known as a Lissajous pattern. The result is a display of a circle–just as you were taught in high school trigonometry. Then put a sine wave into the horizontal deflection channel and a cosine wave of the same frequency into the vertical deflection channel. But the situation changes if you use a stereo signal with the left channel used for horizontal deflection and the right channel used for vertical deflection. If you take an ordinary sound file and feed it to both channels of an oscilloscope operating in X-Y mode, you’ll get an image on the scope looking a lot like a pulsating straight line at some angle to the horizontal. Sending the same signal to both X and Y scope inputs generates something boring like this.
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