TY - GEN
T1 - Analysis of distortion in audio signals introduced by microphone motion
AU - Tourbabin, Vladimir
AU - Rafaely, Boaz
N1 - Publisher Copyright:
© 2016 IEEE.
PY - 2016/11/28
Y1 - 2016/11/28
N2 - Signals recorded by microphones form the basis for a wide range of audio signal processing systems. In some applications, such as humanoid robots, the microphones may be moving while recording the audio signals. A common practice is to assume that the microphone is stationary within a short time frame. Although this assumption may be reasonable under some conditions, there is currently no theoretical framework that predicts the level of signal distortion due to motion as a function of system parameters. This paper presents such a framework, for linear and circular microphone motion, providing upper bounds on the motioninduced distortion, and showing that the dependence of this upper bound on motion speed, signal frequency, and timeframe duration, is linear. A simulation study of a humanoid robot rotating its head while recording a speech signal validates the theoretical results.
AB - Signals recorded by microphones form the basis for a wide range of audio signal processing systems. In some applications, such as humanoid robots, the microphones may be moving while recording the audio signals. A common practice is to assume that the microphone is stationary within a short time frame. Although this assumption may be reasonable under some conditions, there is currently no theoretical framework that predicts the level of signal distortion due to motion as a function of system parameters. This paper presents such a framework, for linear and circular microphone motion, providing upper bounds on the motioninduced distortion, and showing that the dependence of this upper bound on motion speed, signal frequency, and timeframe duration, is linear. A simulation study of a humanoid robot rotating its head while recording a speech signal validates the theoretical results.
UR - http://www.scopus.com/inward/record.url?scp=85006070897&partnerID=8YFLogxK
U2 - 10.1109/EUSIPCO.2016.7760398
DO - 10.1109/EUSIPCO.2016.7760398
M3 - Conference contribution
AN - SCOPUS:85006070897
T3 - European Signal Processing Conference
SP - 998
EP - 1002
BT - 2016 24th European Signal Processing Conference, EUSIPCO 2016
PB - European Signal Processing Conference, EUSIPCO
T2 - 24th European Signal Processing Conference, EUSIPCO 2016
Y2 - 28 August 2016 through 2 September 2016
ER -