![]() Notes start from A0 and go to C8 from left to right. For example, A0 is equal to 27.5Hz, while A4 is equal to 440Hz. Use the piano reference within the activity to identify notes that you would like to use in your song based on notes, frequencies or key location.įrequencies are listed below the white keys and above the black keys in Hertz (Hz). It also has step-by-step screenshots with keypresses on how to change the code to meet the requirement. But the upside is the students absolutely love it! The activity includes a piano reference so students might have a better idea of how the notes match the frequencies. This part of the project will wear you out a little with all of the noise. To code the sound, students will modify an existing program where they try out different frequencies and durations. Once students finish modifying their program, they’ll try it out with the TI-Innovator™ Hub and the ranger (distance sensor). This will import the code for variables that can be adjusted. Press, then navigate to 8 TI Hub > 3 Add Input Device. tns file, “slide_whistle” (in the activity download). The screenshots below are a sample of the sequence of steps students would follow to modify the program. To code the Ultrasonic Ranger Module, students will follow step-by-step instructions on how to modify an existing Python program to actually measure distance. Note: To save time, you can divide this into smaller segments and/or prep the cardboard tube and slide at the end or beginning of a period, and then use another entire period to explore the sensor and play with the sounds.
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