en_analyzer~ interface to The Echo Nests's audio analysis. en_analyzer~ is a Max external that provides an interface to The Echo Nest's audio analysis API. The Echo Nest provides automatic musical analysis that uses machine listening techniques to extract attributes such as tempo, key, time signature, harmony, timbre, and rhythmic structures. With en_analyzer~, Max users can use The Echo Nest's technology to analyze audio data from a buffer~ object. The resulting analysis data can then be used to manipulate the original audio. Possible applications include building visualization tools, filtering or sorting segments of a song based on their pitch or timbre, and using rhythmic and harmonic events in a song to trigger another musical or visual process.

Format : External Environment : max / msp freeware Max 5.x http://https://github.com/echonest/en_analyzer