| 摘要 |
<p>In a multi-microphone (MMic) arrangement (eg. in a mobile phone 10, fig. 2), a noise-suppressed audio signal is determined from either the signal from the two microphones nearest a desired audio source or the signal from all three microphones. Aspects of the invention include speech enhancement from front (101) and rear (103) near mics and a far mic (105) by employing beamforming on main-beam and anti-beam signals generated via various Finite Impulse Response filters (207, fig. 3) linked to audio interference canceller (AIC) modules. Signals containing no speech components or significant noise may be indicated, allowing the normalised signal selections to be compared.</p> |
