NDLI: Integer-based wavetable synthesis for low-computational embedded systems

Content Provider	IEEE Xplore Digital Library
Author	Wright, B. Sukittanon, S.
Copyright Year	2013
Description	Author affiliation: Dept. of Eng., Univ. of Tennessee at Martin, Martin, TN, USA (Wright, B.; Sukittanon, S.)
Abstract	The evolution of digital music synthesis spans from tried-and-true frequency modulation to string modeling with neural networks. This project begins from a wavetable basis. The audio waveform was modeled as a superposition of formant sinusoids at various frequencies relative to the fundamental frequency. Piano sounds were reverse-engineered to derive a basis for the final formant structure, and used to create a wavetable. The quality of reproduction hangs in a trade-off between rich notes and sampling frequency. For lowcomputational systems, this calls for an approach that avoids burdensome floating-point calculations. To speed up calculations while preserving resolution, floating-point math was avoided entirely--all numbers involved are integral. The method was built into the Laser Piano. Along its 12-foot length are 24 “keys,” each consisting of a laser aligned with a photoresistive sensor connected to 8-bit MCU. The synthesis is processed in the sensor array by four microcontrollers running a strictly synchronous wavetable synthesis algorithm. In the laser array is integrated a microcontroller that can toggle each laser, allowing the piano to play itself or limit playable keys.
Starting Page	1
Ending Page	4
File Size	857743
Page Count	4
File Format	PDF
ISBN	9781479900527
ISSN	1558058X
e-ISBN	9781479900534
DOI	10.1109/SECON.2013.6567477
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-04-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Lasers Eigenvalues and eigenfunctions Arrays Music MATLAB Frequency modulation Microcontrollers
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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