Some remarks
The bandwidth can be calculated with other values depending on the tolerance needed :
Very high, for example : for accelerometers and instrumentation microphones
Low : to avoid cutting the bandwidth into small pieces, like for hearing aids .
The tolerance used must always be specified, for example: to . In some cases, the tolerance my be defined by a standardisation (ISO, AFNOR, AINSI, BSI), and as such may not be mentioned in the technical documentation.
In general, the measurement conditions must be mentioned, for example : the input voltage and load for a transducer.