measuring maximum subwoofer output according ansi/cea-2010 ...
measuring maximum subwoofer output according ansi/cea-2010 ...
measuring maximum subwoofer output according ansi/cea-2010 ...
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MEASURING MAXIMUM SUBWOOFER OUTPUT ACCORDING CEA-<strong>2010</strong> (ANSI)<br />
f LOW (Hz) f HIGH (Hz) Limit (dB) Notes<br />
16 1.59 f 0 0 Fundamental<br />
1.59 f 0 2.52 f 0 -10 2 nd harmonic<br />
2.52 f 0 3.78 f 0 -15 3 rd harmonic<br />
3.78 f 0 5.61 f 0 -20 4 th , 5 th harmonic<br />
5.61 f 0 8.50 f 0 -30 6 th , 7 th , 8 th<br />
8.50 f 0 10 k -40 Hi order >9 th<br />
Figure 3: Limit curve for fundamental frequency of 100 Hz and table with<br />
ANSI/CEA-<strong>2010</strong> limits<br />
PERFORMING A CEA-<strong>2010</strong> BURST TEST WITH CLIO<br />
The CLIO 10.31 software release features a new generator stimulus and custom<br />
FFT options that, when used together, allow to perform a CEA-<strong>2010</strong> burst test in a<br />
very simple way.<br />
CLIO CEA-<strong>2010</strong> TONE BURST GENERATOR<br />
A powerful hann-burst tone option has been added to the Signal Generator. Selecting<br />
the CEA Burst option in the generator opens a dialog with the burst options (figure 4).<br />
The generator settings are: burst frequency f 0 in Hz, Number of Cycles and Repetition<br />
Time in ms. While the CEA-<strong>2010</strong> standard requests for a 6.5 cycles burst, we left<br />
the possibility to modify this parameter as it gives the opportunity to use different<br />
“burst-on” durations. For example it is possible to use a 7 cycles burst which is amplitude<br />
symmetrical, instead of 6.5 cycles which is not amplitude symmetrical, while<br />
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