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PODetect blow in Mic and do something
 

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    <p>i found this <a href="http://www.mobileorchard.com/tutorial-detecting-when-a-user-blows-into-the-mic/" rel="noreferrer">tutorial</a> , and it's good , but doesn't work for me ! </p> <p>here is the code : </p> <pre><code>- (void)listenForBlow:(NSTimer *)timer { [recorder updateMeters]; const double ALPHA = 0.05; double peakPowerForChannel = pow(10, (0.05 * [recorder peakPowerForChannel:0])); lowPassResults = ALPHA * peakPowerForChannel + (1.0 - ALPHA) * lowPassResults; if (lowPassResults &gt; 0.95) NSLog(@"Mic blow detected"); //change the background color e.g ! } </code></pre> <p>in the console show me the nslog reseult like this (without any bowling !):</p> <pre><code>2010-04-11 23:32:27.935 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:27.965 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:27.995 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.026 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.055 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.086 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.115 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.145 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.175 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.205 MicBlow[2358:207] Mic blow detected 2010-04-11 23:32:28.236 MicBlow[2358:207] Mic blow detected </code></pre> <p>i change this value : </p> <pre><code> if (lowPassResults &lt; 0.95) </code></pre> <p>to </p> <pre><code>if (lowPassResults &gt; 0.95) </code></pre> <p>so it seems work ! but doesn't chage anything , again if i put the background changing code the , my code change background but without any bowling !! what's the problem ?</p>
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    1. CO"again if i put the background changing code the , my code change background but without any bowling" This makes no sense whatsoever.
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