Hello to every body, and congartullations for tis forum.

I´m trying to make audio measurements with a machine who will work with a pump (who genarates a low frecuency noise). After I will analize it with a dsp (it is doned).
I´m having problems with some noise in low frecuencies, I like to eliminate this frecuencies (becouse i don´t need it), i´m looking betwin 200 - 10Khz only.
I would like to find an active high pas filter integrate circuit with tuenable frecuenci but with a good order on the filter (like 4 or 8). If it is a band pass filter for audio is also ok.
Many thaks for your help
Aren from Spain
I´m trying to make audio measurements with a machine who will work with a pump (who genarates a low frecuency noise). After I will analize it with a dsp (it is doned).
I´m having problems with some noise in low frecuencies, I like to eliminate this frecuencies (becouse i don´t need it), i´m looking betwin 200 - 10Khz only.
I would like to find an active high pas filter integrate circuit with tuenable frecuenci but with a good order on the filter (like 4 or 8). If it is a band pass filter for audio is also ok.
Many thaks for your help
Aren from Spain
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