5 accepted papers
This paper presents a noise-robust hearable device with an adaptive noise canceller. The hearable device has an inner-ear and an outer-ear microphone to collect ear-canal speech signal and the outer-ear environmental signal, respectively. The environmental signal drives an adaptive filter to generat…
This paper proposes automatic gain control with integrated signal enhancement for specified target and background-noise levels. The input signal is separated into a target signal and background noise by signal enhancement. The processing gains for the target and the noise are calculated from their e…
This paper proposes diagonal microphone placement for the landscape/portrait interchangeable mode of a personal computer. Two microphones are diagonally located at a screen corner to provide useful directivity for target-signal enhancement in both landscape and portrait modes. The diagonal microphon…
This paper proposes gain relaxation in signal enhancement designed for speech recognition with an unaware local noise source. An attention is drawn to a new performance degradation problem in signal enhancement combined with automatic speech recognition (ASR), which is encountered in real products w…
this paper proposes a directional noise suppressor with a specified constant beamwidth. A directional gain is calculated based on interchannel phase difference and combined with a spectral gain commonly used in single-channelnoise suppressors (NSs). The beamwidth can be specified as passband edges o…