A measurement
system has been made, which is used for analyzing the spatial& directional
variations in a reverberant sound arena. A spherical, thirty-two-element array
of microphones is utilized to produce a narrow beam, which is piloted in 60
directions. The direct index and directional diffusion of the arriving sound
can be calculated, as can the energy decay ratio in every direction.
An
analysis of the Microphone array measurements replies themselves permits the computation of the
point-to-point difference of reverberation time & sound pressure level, as
well as the 3-D cross-correlation coefficient, over the extent of the selection.
The system has been legalized in simple sound fields in a reverberation chamber
or in an an echoic chamber. The system symbolizes these sound fields as probable,
both qualitatively from plots of the arriving energy versus direction and
quantitatively from the measure. It is expected that the system will be of importance
in evaluating the directional distribution of arriving energy and the diffuseness
and degree of sound fields in rooms.
The Beam forming Microphone Array measurement
is the Pro-Audio manufacturing’s first specialized grade microphone array with
Beam forming and adaptive steering tech and upcoming-generation Acoustic Echo
Cancellation.
Sound
source localization is a significant topic in the functioning field of sound
and vibration, from the product development point to the end off line control
of products. Highly quick and perfect system for sound source localization is the Micro flown PU-based Near Field
Acoustic Camera. The sound pressure
can be gotten as an outcome of an object making too much noise where the element
velocity is very well appropriate to localize the reason of why an object is
making excessive noise. The Near Field Acoustic Camera can be utilized in actual
operating conditions and in reverberant situations, it is no longer wanted to
have or generate an echoic conditions. Unlike old techniques the array of sensors
does not contain single of sound pressure microphones, but it also measures of
PU sound intensity investigations.
The
Near Field Acoustic Camera measures
the particle velocity directly that means that there are no composite and incorrect
computation steps. Thus, the Micro flown Acoustic Camera yields a correct particle
velocity map in the full audible frequency range. Due to the fact that no reforms
are needed, simply a dynamic array of
plus 40dB can reach and visualized. The dynamic range is frequency
independent,thus for entire frequencies the similar high dynamic range can be
reached. The technique shows an absolute value for the particle velocity,sound
pressure and intensity of sound.
