Augmenting Environmental Interaction in Audio Feedback Systems

Audio feedback is defined as a positive feedback of acoustic signals where an audio input and output form a loop, and may be utilized artistically. This article presents new context-based controls over audio feedback, leading to the generation of desired sonic behaviors by enriching the influence of...

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Bibliographic Details
Published in:Applied sciences 2016, Vol.6 (5), p.125-125
Main Authors: Kim, Seunghun, Wakefield, Graham, Nam, Juhan
Format: Article
Language:English
Subjects:
Acoustic noise
Approximation
Architectural acoustics
audio feedback
Computer music
Control systems
Control theory
Design
digital filters
digital signal processing
Electric instruments
Feedback
Guitars
Mapping
Microphones
music
Musical instruments
Noise
reverberation
Signal processing
Sonics
Sound
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Summary:Audio feedback is defined as a positive feedback of acoustic signals where an audio input and output form a loop, and may be utilized artistically. This article presents new context-based controls over audio feedback, leading to the generation of desired sonic behaviors by enriching the influence of existing acoustic information such as room response and ambient noise. This ecological approach to audio feedback emphasizes mutual sonic interaction between signal processing and the acoustic environment. Mappings from analyses of the received signal to signal-processing parameters are designed to emphasize this specificity as an aesthetic goal. Our feedback system presents four types of mappings: approximate analyses of room reverberation to tempo-scale characteristics, ambient noise to amplitude and two different approximations of resonances to timbre. These mappings are validated computationally and evaluated experimentally in different acoustic conditions.
ISSN:2076-3417
2076-3417
DOI:10.3390/app6050125