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The module summarizes the Conclusions from Project Treble Maker.


After completing the project, we concluded the following:

  • Frequency reassignment is necessary for music transcription
  • There is significant room to improve upon this system in order to create a comprehensive music transcription technology.

Ultimately, it’s clear that this music transcription technology has great potential for expansion and could eventually become a useful tool for music lovers everywhere.

The necessity of frequency reassignment

After attempting music transcription with both reassigned time-frequency representations of signals and standard ones, it is clear that frequency reassignment is necessary to achieve a high level of accuracy in note identification. The “smearing” of the frequency domain that occurs with a standard representation is simply too great to provide an accurate indication of what note has been played. A “smeared” spectrum might include significant power at frequencies ranging of several distinct notes. For example, if an “E” was played, the power might be distributed across the “Eb” below that “E” and the “E” itself in a manner that prevents the “E” from being correctly identified. As such, the high frequency resolution provided by reassignment is necessary for transcription accuracy.

Expanding on the foundation

If this project were expanded, the next steps would include expanding the range of inputs that the transcription system can handle. Obviously, music is not limited to single tonal inputs. The system could be expanded to include chords and non tonal sounds by analyzing reassigned spectrograms of those signals and creating a template for comparison for unknown musical signals. Essentially, this would mean expanding upon the library of note “envelopes” employed by the “identify_note” MATLAB function discussed earlier to include entries for these other signals. This process would also involve modifying the algorithm for distinguishing between different notes to account for these expanded inputs.

Additionally, provision could be made for recorded signals by either improving the computational resources available (improved processor, additional MATLAB memory) or by finding a faster algorithm to compute reassigned time-frequency representations of signals.

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
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Source:  OpenStax, Music transcription through frequency reassignment. OpenStax CNX. Dec 19, 2011 Download for free at http://cnx.org/content/col11393/1.1
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