Re: Automatic transcription of rhythm - advice requested

["M.F. McKinney" <mckinney@xxxxxxxxxxxx>]

Andrew,

For tempo and beat tracking, there is a more recent article by Jean Laroche:
"Efficient tempo and beat tracking in audio recordings", J. Audio Eng. Soc.,
V51, N4, April 2003.

You could also check out the webpages and articles of Anssi Klapuri:
http://www.cs.tut.fi/~klap/iiro/

 A difficulty with tempo tracking is that the perceived beat of a piece of
music is often ambiguous.  This is true even for musicians who are
unfamiliar with the notation of a piece to which they are listening.

Also, Fabien Gouyon had a recent paper at the AES convention on classifying
audio tracks as either duple and triple meter:
"Determination of the meter of musical audio signals: Seeking recurrences in
beat segment descriptors.", 114th AES Convention, Paper 5811, Amsterdam
Netherlands, 22-25 March 2003.

Good luck.

Martin McKinney

-------
"If we knew what we were doing, it wouldn't be called research, would it?"
Albert Einstein (1879-1955)


----- Original Message -----
> Date:    Mon, 30 Jun 2003 14:25:49 +1000
> From:    Andrew Nesbit <alnesbit@STUDENTS.CS.MU.OZ.AU>
> Subject: Automatic transcription of rhythm - advice requested
>
> Dear List,
>
> I wrote several weeks ago concerning my starting out in CASA research,
> and I received very helpful advice.  I have now narrowed down the
> scope of my project, and I am requesting guidance in concentrating my
> reading to the most relevant published research.
>
> We have digital recordings of Indigenous Australian music.  It
> contains three instruments: yidaki (didjeridu), vocals and clapsticks.
> One of each instrument is present in the mix.  What makes this project
> interesting is that the music contains polyrhythms, changes of metre
> and changes of tempo.  My task is to develop a system (in Python) to
> automatically transcribe the rhythms in this music.  Transcription of
> pitch and other musical characteristics would be a bonus, but it is
> not the main goal.  The system is not a general-purpose CASA tool, but
> rather, tailored towards a specific application.
>
> Does anybody have any suggestions for published research which would
> be helpful for me to get insight into my project?
>
> (My overall plan, so far, is to separate out each of the instruments
> using various instrument models.  Next, perform detection of note
> onsets and other salient rhythmic features in each of the separated
> parts.  Then, using an (as-yet undetermined) "grid-laying" algorithm,
> which operates within a given part and also across different parts, to
> find a best-fit combination of metres and tempi which satisfy the
> rhythmic characteristics of the original mix.)
>
> Finally, is this the best list to be asking such questions?  If there
> is a more appropriate forum, could somebody please direct me to it?
>
> Thankyou in advance.
>
> Andrew.