Time-domain features First, we should implement ADC procedure, which converts analog signal to digital signal.Next, there is a framing procedure, which is needed in order to generate perceivable audio chunks(note that our ear's time resolution is about 10ms)It's noticeable that each frame overlaps with another. The reason will be revealed later.After framing, feature computation and it's aggrega..

The conversion of analog signals in nature to digital signals is one of the most important procedures in audio signal processing. Since sound waveforms can be understood in terms of two-dimensional graphs, there are two keywords when implementing ADC. SamplingSampling is a reduction of continuous-time signal to a discrete-time signal.It extracts values(especially air pressure) from original sign..