Howtosignalprocessing
Diffuse-Field Equalisation (DFE) is the removal of the direction-independent aspect of a set of frequency responses measured at all directions on a sphere.
- What is diffuse field curve?
- What is diffuse field in headphones?
- What is diffuse field microphone?
- At what frequencies is diffuse field theory valid?
What is diffuse field curve?
Diffuse-field curve – one without wobbles
Instead of putting a single speaker directly in front of the head, we place the head in a very reverberant room, so that sound arrives at the head from all angles and from all directions equally.
What is diffuse field in headphones?
a diffuse field means that at every point in the space there's the same sound pressure, so the headphones are tuned to sound like a speaker would sound in such a space.
What is diffuse field microphone?
Diffuse-field microphones, also known as random-incidence microphones, are designed to have a flat response when signals arrive from all directions and are typically used to measure vehicle interior noise, or building acoustics.
At what frequencies is diffuse field theory valid?
Measurement of Diffuse-Field Absorption Coefficients
Values of α are published for a range of frequencies between 125 Hz and 4 kHz. Each coefficient represents the diffuse-field absorption averaged over a band of frequencies one octave wide. Occasionally absorption data are required for calculations beyond this range.
