A recreation from scratch of the iconic chirpy noises emitted by a communicator in the original series of Star Trek. This sequence of 10 chirps is patterned after an original sound effect, but not created from it in any way. The sound of each chirp is not just a downward sweep of tones (I used square waves), but the key aspect to getting it to sound right is a very steep pass-band filter. The envelope of each chirp is also patterned after the original, but not an exact duplicate. This might make a great ringtone for trekkies. I would use it myself if only I could figure out how to get it into my dumbphone. For that purpose, however, you might need to add a gap of silence at the end (not sure how ringtones are set up, really).

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