Skip to main content
padlock icon - secure page this page is secure

De-Noising of a Room Impulse Response by Applying Wavelets

Buy Article:

$30.00 + tax (Refund Policy)

One of the techniques most commonly used for de-noising of audio signals, images or speech is wavelet denoising. However, with regard to de-noising of room impulse responses (RIRs), the usage of wavelets can be hardly found in literature. This paper explores the potentials of applying wavelets for the reduction of negative effects of noise in these responses, since noise represents a serious problem in RIRs. The analysis is based on implementing various wavelets on both synthesized and measured RIRs containing different noises. The influence of changing the parameters of wavelets is observed in order to find an optimal set of parameters that will provide the best de-noising results. The dynamic range improvement of the backward integrated RIR as well as the noise floor reduction are used as control measures to assess the wavelet de-noising quality. The results show that the noise floor can be reduced and dynamic range can be improved significantly (e.g., by more than 10 dB) by applying the optimal set of wavelet parameters. The wavelet de-noising is compared with some other noise compensation methods using the estimated reverberation time as a control measure. In addition to de-noising, wavelets seem to be promising for detection of the truncation time of a RIR.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: May 1, 2018

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
  • Editorial Board
  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Information for Advertisers
  • Online User License
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more