From ScavHunt 2011:
A lock that opens to a unique combination of musical inputs. The key may be either a series of tones that could be replicated by anyone or the direct mechanical operation of a customized instrument.
This item was never completed by Max Scav in 2011 but I pursued it on a whim in January 2014.
Back in 2011, most teams completed the item using a MIDI keyboard or something of that sort. While that is a perfectly valid way to complete the item, it doesn't really use a 'musical input' to unlock a secret. In the case of the MIDI keyboard, the music merely serves as audible feedback for an ordinary button-operated digital combination lock.
Instead, this musical lock takes a wave file as input and determines whether the encoded tune matches a preset list of frequencies. This way, any sound source can be used so long as the resulting wave file contains a well-formed sequence of tones.
Basic command line structure:
python musical_lock.py infile precision freqs [freqs ...]Working example:
python musical_lock.py test.wav 3 293.63 440.00 293.66 392.00- Add capacity to record sound files on the fly using PyAudio
- Add ability to unlock a secret through a musical input
- Improve UI to make more presentable