Common Knowledge Points in Audio Embedded Product Development
1. Digital Gain Adjustment Method 20 * ln x = 8dB, calculating the value of x gives the multiple of the digital gain to be increased. for(int i=0;i<samples;i++){ pcm[i] = pcm[i] * powf(10.0,要调节增益大小/20.0);} 2. Dynamic Range Formula Dynamic Range = 20 * log( Maximum Value / Minimum Value) Example: The integer range represented by a … Read more