Definitions for "Frequency Response"
How the different frequencies are reproduced in a system. The human ear, at its best, has a frequency response of about 20 Hz to about 20 KHz (20,000 cycles per second). Good electronic audio equipment may have a response of 20 Hz to 20 KHz plus or minus 1 dB.
The frequency response indicates how much of the audible range can be accurately reproduced. The human ear responds to frequencies from approximately 20-20,000 Hz
The range of frequencies over which a device operates as expected. (Course material/Ultrasonics/EquipmentTrans/tranducertesting2.htm)
Keywords:  torque, analyzer, filter, setting
Filter setting of a torque analyzer
The band of frequencies passed by a given component or system with little attenuation
Keywords:  bandwidth, see
see bandwidth
The changes in the sensitivity of a circuit or system with frequency.
The transfer of the frequency of the underlying data, usually prices, to the frequency of its moving average.
Keywords:  gain, change
The change of gain with frequency.