Featured Research

from universities, journals, and other organizations

Method developed to identify musical notes at any venue

Date:
April 25, 2010
Source:
FECYT - Spanish Foundation for Science and Technology
Summary:
A team of telecommunications engineers has created a new method to automatically detect and identify the musical notes in an audio file and generate sheet music. The system identifies the notes even when the type of instrument, musician, type of music or recording studio conditions vary.

A team of telecommunications engineers from the University of Jaen (UJA) has created a new method to automatically detect and identify the musical notes in an audio file and generate sheet music. The system identifies the notes even when the type of instrument, musician, type of music or recording studio conditions vary.

"We propose an automatic system to detect and transcribe musical notes for one-instrument musical signals which, unlike other methods, is capable of adapting to the music scene," Julio José Carabias, co-author of the paper and a researcher from the Department of Telecommunications Engineering at the University of Jaen explained.

The details of the method were published recently in IEEE Transactions on Audio, Speech, and Language Processing. The fact that the new system can "adapt" means it will work even if elements such as the type of instrument, music, style, studio or microphone position vary.

"Automatic music transcription has many practical applications for musicological analysis and is of enormous assistance, for example, in recovering musical content, separating audio sources and codifying or converting audio files," Carabias says.

The researchers start with a 'wav' file, a common format for audio recordings, and after applying the method they obtain a 'midi' file, a musical instrument communication protocol that makes it possible to visualise the sheet music and listen to the result.

Harmonic Dictionary

"Another advantage of this method is that it does not require prior training with a musical database," the engineer highlights. What the technique does determine is the note or 'spectral pattern' of the musical notes of an instrument, which are used to compile a harmonic dictionary.

In music, people talk about 'harmonicity' when the energy produced by a note is distributed across the multiple positions of a fundamental frequency. The distribution of the harmonic energy of a musical note is what defines its spectral pattern. The harmonic diction is a matrix in which the typical spectral patterns of all musical notes are represented.

With the help of this dictionary and a computer algorithm called 'Matching Pursuit', the musical notes with patterns that most resemble the harmonic dictionary are identified. While the method can only be applied to files with one sole instrument at present, the scientists are already investigating how it can be applied to several.


Story Source:

The above story is based on materials provided by FECYT - Spanish Foundation for Science and Technology. Note: Materials may be edited for content and length.


Journal Reference:

  1. J. J. Carabias-Orti, P. Vera-Candeas, F. J. Cañadas-Quesada y N. Ruiz-Reyes. Music Scene-Adaptive Harmonic Dictionary for Unsupervised Note-Event Detection. IEEE Transactions on Audio, Speech, and Language Processing, 18 (3): 473 -- 486, March 2010

Cite This Page:

FECYT - Spanish Foundation for Science and Technology. "Method developed to identify musical notes at any venue." ScienceDaily. ScienceDaily, 25 April 2010. <www.sciencedaily.com/releases/2010/04/100423113732.htm>.
FECYT - Spanish Foundation for Science and Technology. (2010, April 25). Method developed to identify musical notes at any venue. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2010/04/100423113732.htm
FECYT - Spanish Foundation for Science and Technology. "Method developed to identify musical notes at any venue." ScienceDaily. www.sciencedaily.com/releases/2010/04/100423113732.htm (accessed July 25, 2014).

Share This




More Computers & Math News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) — Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) — Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) — 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
Powered by NewsLook.com
Facebook Earnings Put Smile on Investors Faces

Facebook Earnings Put Smile on Investors Faces

Reuters - Business Video Online (July 23, 2014) — Facebook earnings beat forecasts- with revenue climbing 61 percent. Bobbi Rebell reports. Video provided by Reuters
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:  

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile iPhone Android Web
          Follow Facebook Twitter Google+
          Subscribe RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins