As I spend many hours in front of my pc drawing, surfing and writing, I wanted to listen to music from a sound device that performs much better than my laptop speakers. I also was wondering how many people out there practically do not listen to music. I don’t mean that they do not listen to music literally. The sound they hear is not music. It is just something that has rhythm, a lot of bizzzz and hizzzz and something like melody. But certenly not music. Laptop speakers do not produce even an average sound quality (unless your laptop is equipped with some state of the art laptop speakers but even then…). Continue reading
Due to economic growth, the number of the cars used has increased in the resent years. This accompanies the degradation of air quality, especially in industrialized countries and urban environments due to traffic congestion . In many areas, the traffic related air pollution is the main reason of air quality degradation. The pollutant concentrations are related directly with the duration of the congestion . The World Health Organization (2010) has set the maximum values of pollutant concentrations but in many measurements, these values are exceeded.
The concept is to build a low-cost, low power consuming device to monitor the quality of air. Continue reading