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.
Your contractor can explain how the location and type of your surface affect costs, but on average, washing a sidewalk may cost $116, compared to $182 for a driveway, $123 for a walkway, $214 for a patio or deck and $312 for the exterior of a building.