What is DSP (Digital Signal Processor)

Many times, the signals come to us in a way that is not entirely understandable (and I am not referring to the ones that we emit people on a Saturday night in a bar), but if they are digitizable, they are capable of applying an improvement process on them and enhancement. This is what a DSP does.

A Digital Signal Processor (DSP) Digital Signal Processor) consists of a chip that acts on the digitized information of an analog signal (such as, for example, voice) to improve it in some sense or apply an operation on it.

The case of voice is very exemplary of what a DSP does. For example, if we digitize the voice in the middle of the street, it will be masked by a series of background noises, which will disturb us to hear it clearly.

This background noise can be captured with another microphone, so that we have a sample of the sounds that are not the voice, and then digitally minimize such background noises, enhancing what is the voice.

While this task can be done by the

CPU of team, in some cases it is more practical (for economy Y speed) to be done by a specialized chip. This would be the DSP.

Another example would be the video Recorded in not very good light conditions, such as at night, which we can improve with a digital treatment.

A DSP chip can be applied to sound (music, voice), video and still images, or to analog signals of any type that can be digitized.

DSPs work on an operations basis math applied to digitized data such as, for example, the app of the Fourier transform.

An important role in the quality of the future digital signal is played by the sample rate.

This is a figure that denotes the number of samples of the analog signal that are taken to digitize in a defined period of time. The higher the higher quality the sample, as the digital signal will look more like the analog.

By nature, rate sampling is finite. If we wanted to reproduce the analog signal identically, it should be infinite.

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