Definitions for "Impulse response"
Keywords:  transient, brief, sfn, frf, fft
The response of a system to a "spike" input that abruptly rises from zero and then abruptly decays back to zero. The response of the system to any input can be predicted from the impulse response. The impulse response measured in a room also shows a series of echoes of the direct response, which are reflections from walls, etc. See the Signal Processing Section for more detail.
Response of the device to a digital impulse applied at the input. Typically used to characterize interpolation filters.
In essence, the way a particular device responds to an impulse. For example, the reverberation of a room can also be thought of as its impulse response. A great deal of information about a device can be determined by how it reacts to an impulse. The frequency response, phase response, and transient response are all tied to this specification, though this specification itself is rarely seen on a spec sheet.