Hi
I have been working on a couple of projects at home to reduce the noise generated by two machines.
I have borrowed a decibel meter and obtained some readings but now having obtained the readings I am struggling to interprate the results.
The first machine runs at around 73.20 dB, I then reduced this to 63.02 dB i.e. a reduction of 10.18dB
The second machine runs at around 70.87 dB, I have reduced this to around 66.60 dB i.e. a reduction of 4.27 dB
What I would like to do is convert these figures into a % reduction i.e. determine that I cut the sound down by %50 or whatever
I can certainly hear that I have made big difference but would love to have a calculation to back this up and understand exactly how much by.
I have looked on the web an understand that in acoust terms decibels are not on a linea , that is a 5dB reduction is not half that of a 10dB reduction.
I am good with the mechanical stuff but when it comes the electronic (and related stuff) I leave it you clever guys
Thanks for your help
Enfield in NZ
I have been working on a couple of projects at home to reduce the noise generated by two machines.
I have borrowed a decibel meter and obtained some readings but now having obtained the readings I am struggling to interprate the results.
The first machine runs at around 73.20 dB, I then reduced this to 63.02 dB i.e. a reduction of 10.18dB
The second machine runs at around 70.87 dB, I have reduced this to around 66.60 dB i.e. a reduction of 4.27 dB
What I would like to do is convert these figures into a % reduction i.e. determine that I cut the sound down by %50 or whatever
I can certainly hear that I have made big difference but would love to have a calculation to back this up and understand exactly how much by.
I have looked on the web an understand that in acoust terms decibels are not on a linea , that is a 5dB reduction is not half that of a 10dB reduction.
I am good with the mechanical stuff but when it comes the electronic (and related stuff) I leave it you clever guys
Thanks for your help
Enfield in NZ