原來的計畫是想幫NXT裝上兩個耳朵
讓他能夠找出聲音的位置
先用一顆MIC Sensor
就發現 馬達(Servo)的聲音影響太大
背景雜音太高造成要辨識的聲音要很大聲才行
這樣就不好玩了
不然就是Robot要走走停停的 停的時候聽聲音
唉 Servo就是有這樣的問題
或許要裝上隔音器(耳朵的樣子)對準想收音的方向吧
PS.不然就是要另外用一個Board用兩顆MIC來做把Motor Noise Cancel掉
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March 04, 2009
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If the sound you intend to identify is much higher frequency than the servo-motor noise, then a simple low pass filter can do the job. Active noise cancellation is too complicated for a low quality MIC used for NXT.
Posted by: Fred | March 06, 2009 at 08:00 AM
Yes, It is impossible to use NXT to do that. I will use an external DSP to do that. I have 2 Motor Noise to cancel.....
Posted by: Tze-Chien Chu | March 06, 2009 at 05:05 PM