python - Identifying audio's tempo from live input -

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this question has answer here:

i haven't been able find adequate answer yet, figured ask.

i'm trying build app takes audio signal (someone playing piano, not .wav or .mp3) follow player's tempo. application here live karaoke, there video screen lyrics follow tempo well.

right now, i'm trying solve audio portion, need write identifies tempo of incoming audio , able follow tempo. there libraries or resources directly relate problem?

i thinking coding in python (since that's i'm familiar with) wrapping in objc, i'm still neophyte programming, i'm open learning whatever need to.

any appreciated!

unfortunately, cannot tell way prepared solutions. think should listen every byte of discret audio signal.

any music has rythm, periodical pulsation of audio signal amplitude.

i recommend check level of signal , analyze pulsations. once can make assumption interval between volume jumps beat bar - can count tempo (inversely bar length)


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