Acoustics - Acoustical Parameters Measurement
Acoustics plugin can be used for computing RT20, RT30, RT custom,
EDT, D50, C50, C custom and TS parameters (see the ISO 3382
1 - Room Impulse Response
2 - RT30 computed from Schroeder Plot of data in Figure 1
3 - RT30 and other acoustical parameters, computed for all octave
4 - RT30, graph for all octave bands
Impulse Response has to be measured by using the main program,
Sample Champion (more information in Application
note #11). The
Room Impulse Response gives information about the reverberation
time by mean of the Schroeder Plot (a detailed explanation
of this analysis technique is described in the Application
parameters computed by using this plugin:
EDT parameter (Early Decay Time) is the
reverberation time, measured over the first 10 dB of the decay.
D50 parameter (Definition or Deutlichkeit) is
the early to total sound energy ratio.
C50 parameter (Clarity or Klarheitsmass) is the early
to late arriving sound energy ratio.
TS parameter (Centre Time) is the time of the centre of gravity
of the squared impulse response.
Acoustics topics on this subject on PureBits site.
to Sample Champion features.
What is Sample Champion?
fast and powerful
Champion is an accurate and easy to use audio measurement
software. It has been designed for acoustical technicians,
sound engineers, scientists and students. With this
software you'll be able to easily perform Impulse Response
measurements, FFT analysis and much more.
very useful options are available, such as:
MLS pre-filtering (pink and/or custom spectrum)
in time and frequency domain
results (the Impulse Response can be monitored during
the averaging process)
calibrate the system using internal or external sources.
been designed with special attention to the possibility
of future improvements and expansions. Special purpose
signal processing plug-ins are available and others
will be released.
module allows to approximate BUTTERWORTH
and CHEBYSHEV low-pass, band-pass and high-pass
analog filters. Two banks of IEC 1260 Octave
and 1/3 Octave Filter Banks are implemented
module computes and plots a 3D Cumulative Spectral
Decay of an impulse response.
Time, Early Decay Time, Definition,
Clarity and Centre Time.
Go to Sample Champion features
or go directly to the download
page and try yourself the trial version of Sample
Champion! (Sample Champion requires Windows 95/98/2000
or NT4 and a full-duplex audio sound card).
Champion User Manual is now available as single printable
file . Click here.
| PRODUCTS | DOWNLOAD | ORDER | SUPPORT | RESOURCES
| CONTACT US | SITE MAP
2000 © PureBits.com - All Rights Reserved.