NDLI: An ideal integrator for higher-order integrated wavetable synthesis

Content Provider	IEEE Xplore Digital Library
Author	Franck, A. Valimaki, V.
Copyright Year	2013
Description	Author affiliation: Acoust. Dept., Fraunhofer Inst. for Digital Media Technol. IDMT, Ilmenau, Germany (Franck, A.) \|\| Dept. of Signal Process. & Acoust., Aalto Univ., Espoo, Finland (Valimaki, V.)
Abstract	Higher-order integrated wavetable synthesis (HOIWS) is an efficient technique to reduce aliasing in wavetable and sampling synthesis. A periodic audio signal is integrated repeatedly before it is stored in a wavetable. During playback, the pitch of the audio signal can be changed using interpolation techniques and the resulting signal is differentiated as many times as the wavetable has been integrated. Previous discrete-time integrators approximate ideal integration, which leads to magnitude and phase errors. This paper proposes an ideal integration method, which is applied in the frequency domain with the help of the FFT. Its remarkable advantage is that both the magnitude and the phase errors are completely avoided in the special case of periodic signals. The proposed ideal integrator shows a superior performance over previous digital integration methods. It improves the sound quality of the HOIWS algorithm and helps it to maintain the original waveform after interpolation and differentiation stages.
Starting Page	41
Ending Page	45
File Size	542821
Page Count	5
File Format	PDF
ISBN	9781479903566
ISSN	15206149
DOI	10.1109/ICASSP.2013.6637605
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Discrete Fourier transforms Interpolation Signal processing algorithms Frequency response Time-domain analysis Harmonic analysis wavetable synthesis Acoustic signal processing alias reduction discrete-time integrators interpolation
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

Optimum binary windows for discrete Fourier transforms

Frequency-dependent signal windowing

Interpolation techniques for real-time multifrequency waveform analysis

An improvement of Tribolet's phase unwrapping algorithm

Discrete Stockwell Transform and Reduced Redundancy Versions from Frame Theory Viewpoint

Signal processing using Fourier & wavelet transform for pulse oximetry

Interpolation algorithm using Walsh-Hadamard and discrete Fourier/Hartley transforms

Analysis/Synthesis filter bank design based on time domain aliasing cancellation

An algorithm for bandlimited signal interpolation

An ideal integrator for higher-order integrated wavetable synthesis

Similar Documents

Optimum binary windows for discrete Fourier transforms

Frequency-dependent signal windowing

Interpolation techniques for real-time multifrequency waveform analysis

An improvement of Tribolet's phase unwrapping algorithm

Discrete Stockwell Transform and Reduced Redundancy Versions from Frame Theory Viewpoint

Signal processing using Fourier & wavelet transform for pulse oximetry

Interpolation algorithm using Walsh-Hadamard and discrete Fourier/Hartley transforms

Analysis/Synthesis filter bank design based on time domain aliasing cancellation

An algorithm for bandlimited signal interpolation

An ideal integrator for higher-order integrated wavetable synthesis