Audio beat detection algorithm

Bill Cottman

vanakaru: yeah i tinkered in this direction also and liked the results! i think this will satisfy my needs for now.

ian: thx. i've forgotten about soundflower. thx for the reminder. will consider this if i need more control.

skulpture: thx for the links. i have the RTA Lite app on my iPhone so i can see the freq spectrum i'm listening to

Skulpture

I have just found this too:

[http://showsync.info/index.php/tools/beattracker/](http://showsync.info/index.php/tools/beattracker/)

_"Beattracker is a standalone beat tracker module that analyzes an incoming audio signal and accurately detects the tempo and the current beat position after feeding it an initial tempo by tapping. It outputs the tempo and beat information in various formats, such as MIDI clock, OSC and MA net."_

_ _

_@_[vanderzee](http://troikatronix.com/troikatronixforum/profile/252/vanderzee)

Bill Cottman

thx Skulpture. I'm playing with Arduino today

Skulpture

And this....

[http://wavesum.net/products.html](http://wavesum.net/products.html)

Bill Cottman

thanks

Skulpture

I keep finding stuff! lol

crystalhorizon

I´m trying a different approach: In Cubase I made a midi track with a short bass drum, tapped to my main Wave Track. I exported a midi and an audio file of this bass drum sync track: The idea was to start both tracks (audible track and inaudible sync track) with a keyboard watcher or enter scene trigger-the sync track should change after e.g. 8 beats -counter actor, some effect of the video. So now I have no idea what actor midi, audio, audio core, etc actor to use for the sync track, that triggers the counter and shoul be not audible. Its not about live capturing the audio. Any ideas?

crystalhorizon

no one?

Skulpture

The MIDI player in Isadora; actually plays a MIDI file; it doesn't send the note out.

This is where Ableton is perfect for Live stuff as that will and the MIDI out and play music at the same time.

I will have a think about the best solution today for you.

crystalhorizon

Yeah, saw your ableton tutorial. Thanx for helping.

Skulpture

Really what you need is something like Duration or Vezer

But these mostly deal with OSC (similar to MIDI in many ways really - in its simplest form they both send messages just via deferent methods/protocols)

Worth having a look anyway.

Michel

Duration is really worth a look.

Best
Michel

Skulpture

It is indeed. I don't think you can drag a MIDI file into Duration though.

But, saying that, I would swap the MIDI for OSC if I am totally honest.

It may be a bit more work but the workflow is much better and reliable.

Skulpture

http://vezerapp.hu/blog/vezer-talks-osc/

MIDI and OSC.

**Note:** This isn't out yet - due out very soon!

crystalhorizon

On my windows machine, I managed to send OSC data from duration to Isadora. cool. but how to import my sync (midi or audio) file into duration? Skulpure I think you´re right, that you cant import a midi file in duration.

Skulpture

The MIDI player in Isadora actually plays a MIDI file; it doesn't send the note out. It's not going to work.

I'd be tempted to create an OSC track in Duration with triggers on every beat. Scrap the MIDI file.

crystalhorizon

Ok, on the mac it works, on two windows machines: one is crashing (duration) and the other can only open an older version of duration, where you cant import audio files.
So Mac wins ;-)
Thanx for the advice!

Skulpture

I am sure you will figure it all out. :-)

crystalhorizon

;-)

DusX

Another.. no BPM detection, but still worth a mention.
http://ethnotekh.com/software/dataracket/