Test coba coba test 21
If you are some fanatic about the tone quality of your car's stereo program, you will want to use a real-spare time analyzer (RTA). It can monitor each and every frequency about music across the spectrum from 20 Hertz (Hz) to 20,000 Hz and discover peaks and valleys in the frequency range. Once you know where the peaks also valleys are, you may make adjustments to eliminate them, ensuring a soft transition between frequencies.
Difficulty: Average
Instructions
things you'll need:
Real-time Analyzers Pink Noise CD
1 Find any CD that is performs pink noise. Pink noise remains all frequencies of the spectrum generated at the same level. It sounds like static whenever you play it.
2 Make certain that the RTA's battery remains properly charged. Most devices include a readout that informs you if the battery is charged or wants charging.
3 Make certain that you obtain any good stand for the RTA's microphone. The microphone will be attached to the stand and the assembly will be put on the driver's seat from the car . The endure needs to have a base securely weighted accordingly that is it will holiday in just one situation free of moving.
The Test
1 Set the microphone stand on the driver's seat, very that the microphone is 26 inches above the seat - roughly the position about the driver's ears.
2 Face the microphone toward the front of the dash.
3 Plug the microphone into the RTA.
4 Perform the CD along with pink noise by way of your noise system. Set the CD participant to repeat the track.
5 Make certainly that is all the doors are closed.
6 Carry the meter also remain outside the automobile whenever you run the test.
7 Place the RTA on the test form. A graph will appear on its display. This graph yous a visual reading regarding the sound of your system away from 20 Hz to 20,000 Hz. The dots beside the bars that define the frequency exhibit any sound level about either 1/10 or 3 dB. This helps you find the way much added seem level one frequency has over another. The RTA will print away some graph.
8 Use the graph to adjust your equalizer to eliminate the peaks and valleys and achieve any smooth transition from frequency to frequency.
Tips & Warnings
You can get a CD through pink noise out of any association that sponsors Sound Away contests. Use an RTA that is can adjust speeds and frequency and that is can require readings at flat, peak or RMS. Various devices include the IASCA test score seeing that component of their software. IASCA remains an association that sanctions also sponsors Sound Off contests. When you have a measurement, the software of the RTA notify you what your IASCA sound quality score would be. This might be beneficial because some reference.
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