Acoustic products sound quick measure system (SoundQM)
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It is a state patent developed by Jiefu and Nanjing University Acoustic graduate school.
The splitting sweep speed minimum only needs 1second and the test error is not over than 0.5dB
It is applied for characteristic tests of Speaker, sound box, acoustic horn, earphone, receiver, buzzer, etc.
It adopts phase buffet adjust technique, and no need to reconnect the hardware to realize the in-pahase measurement of electricity parameters and sound parameters.
It is possible to monitor and manage the quality according to the preset upper and lower limit of SPL, Qts, Fo, Zo, and also check the polarity at the same time.
Sweep range:20-20000 Hz, Sweep alternation: 1/24-1/3 oct.
It is integrated sine wave generator, RMS voltmeter, track filter and level record in the software system.
It is installed Standard Microsoft Windows application
the measure data can be saved as text file for easy reference.
It is appended protect circuit to assure the high reliability.
It has particular characteristic for upgrade