发明名称 |
CONFERENCING DEVICE SELF TEST |
摘要 |
A plurality of acoustic sensors in a non-anechoic environment are calibrated with the aim of removing manufacturing tolerances and degradation over time but preserving position-dependent differences between the sensors, The sensors are excited by an acoustic stimulus which has either time-dependent characteristics or finite duration. The calibration is to be based on diffuse-field excitation only, in which indirect propagation (including single or multiple reflections) dominate over any direct-path excitation. For this purpose, the calibration process considers only a non-initial portion of sensor outputs and/or of an impulse response derived there-from. Based on these data, a frequency-dependent magnitude response function is estimated and compared with a target response function, from which a calibration function is derived. |
申请公布号 |
HK1203267(A1) |
申请公布日期 |
2015.10.23 |
申请号 |
HK20150103680 |
申请日期 |
2015.04.15 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
NEAL, TIMOTHY, J.;DICKINS, GLENN, N. |
分类号 |
H04R |
主分类号 |
H04R |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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