Digital signal processing (DSP) is the numerical manipulation of signals, usually with the intention to measure, filter, produce or compress continuous analog signals.umerical methods require a digital signal, such as those produced by an analog-to-digital converter (ADC). The processed result might be a frequency spectrum or a set of statistics. But often it is another digital signal that is converted back to analog form by a digital-to-analog converter (DAC).
1 On average, the cost to repair a sidewalk could be anywhere from $4 to as much as $10 per square foot. 2  If a higher quality finish is used, the price can reach as high as $15 per square foot. They can charge differently depending on their location as well as the experience and knowledge that they offer. 2  On average, the cost to repair a sidewalk could be anywhere from $4 to as much as $10 per square foot.
Considerations. Major contributors to cost include the type of sidewalk and the extent of the damage. Root damage, for example, tends to be very costly and often results in some of the highest prices for sidewalk repair.