REMOVING NOISE FROM A LEGACY LOUDSPEAKER

Project Info

butterworth-filter-design-3

Case

The client loudspeakers did not produce a clear sound and this had bothered him for a long time. He was accustomed to his loudspeakers and did not want to replace them. He requested us to make some electrical changes in the speaker so that it could produce a clear audio streaming.

Challenges

The main challenge was that to retain the same old speaker. Since the loudspeakers were almost obsolete with such unreliable electronic parts such as capacitors and inductances losing their original electronic specifications during the course of time, the first choice was to replace them. But even doing this, the issue might have remained unresolved.

Solution:

In order to fully fulfill the client’s request, we rather designed two parallel filters. The operational frequency of the speaker was about 800 Hz. Based on this information and electrical configuration of the filter, values of filter’s capacitors and inductors needed for providing a proper output while deleting side band and white noises were calculated. The next step was making the PCB design of the filters and this was done in eagle. Since the current was about 5A, the proper thickness of the board and wirings were also considered to meet the current requirement.

Results and impacts

While the project was a simple one, it fulfilled the request of the client making him fully satisfied. He was able to use his old speaker with the quality of a new speaker.

Description

The client loudspeakers did not produce a clear sound and this had bothered him for a long time. He was accustomed to his loudspeakers and did not want to replace them. He requested us to make some electrical changes in the speaker so that it could produce a clear audio streaming.

Client:
Date:
November 17, 2016
Location:
Category:
Electrical and Electronic Engineering
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