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GMU:Autonomous-Collaborative/Ludwig (view source)
Revision as of 20:53, 12 October 2019
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==Construction== | ==Construction== | ||
My goal was to use many different accustic materials. | |||
I started with a wooden frame which surrounds an inner base plate. I divided the plate into two halves, one with acoustic foam and the other with lines and circles engraved. On the front side I attached a wire frame and connected it loosely to the body. Furthermore, I have plastic hair of a broom built into the frame. The piezo microphone is glued to the base plate. Below it are the audio interface, a small power bench and the Raspberry PI, which are mounted on the feet. They are hidden by the frame. It is important to place damping bouncers under the feet. This prevents the transmission of foreign vibrations to the microphone. | |||
==Methods== | ==Methods== | ||
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=== control of channels === | === control of channels === | ||
[[File:channel control.PNG|600px]] | [[File:channel control.PNG|600px]] | ||
Because the experience is more immersive if there is no hard cut between the effects, I decided to implement a control for the channels which allow a fade-in and a fade-out after a change. | |||
=== sine-pitch === | === sine-pitch === | ||
[[File:sine_pitch.PNG|600px]] | [[File:sine_pitch.PNG|600px]] | ||
For this effect I used the pitch example in the PD-documentation by Miller Puckette. Because I did not wanted to have a static factor for the pitch I uses a sine wave as factor to modulate the input. For every instance pseudo-random growth rate and pitch range are generated. | |||
=== low and high pass filter === | === low and high pass filter === | ||
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I wanted to build a device that uses the piezo microphone and a raspberry to create relaxing mood with sounds and tactile media. The result is a first feasible approach. In my opinion listening to the device is surprisingly immersive. But that's a purely subjective assessment. For further improvement, it would be necessary to develop a user study that verifies the benefits. | I wanted to build a device that uses the piezo microphone and a raspberry to create relaxing mood with sounds and tactile media. The result is a first feasible approach. In my opinion listening to the device is surprisingly immersive. But that's a purely subjective assessment. For further improvement, it would be necessary to develop a user study that verifies the benefits. | ||
# The device is too big and difficult to transport. The sound processing should be optimized to a system on a chip, | # The device is too big and difficult to transport. The sound processing should be optimized to a system on a chip, such that the whole processing could fit in a regular fidget cube. | ||
# The audio processing doesn't show the potential yet. There a still too many random values. Instead of randomness I would like to use more input signals from the user. I think it would be cool to add harmonics dependend on the orientation of the device, which can be measured by a gyroscope. | # The audio processing doesn't show the potential yet. There a still too many random values. Instead of randomness I would like to use more input signals from the user. I think it would be cool to add harmonics dependend on the orientation of the device, which can be measured by a gyroscope. | ||