Third octave filter and voltage obtained

This should be taken into account when plotting the data. In summary, during a laboratory measurement of third octave and 10% filters, values were recorded for frequency and corresponding voltage. However, in order to read the voltage, the knob for multiplier had to be adjusted when values were out of scale. The plotted data should take into account the multiplier used for each voltage measurement.
  • #1
Pole
9
0

Homework Statement


Hello!
Problem is as follows: during measurements laboratory we examined characteristics of a third octave and 10% filters, we were noting down two values at each step --> frequency (ranging from ~1000 to ~1600 Hz) and corresponding voltage. However, in order to read the voltage we had to move the knob for multiplier from time to time when values were out of scale.
The table approximately looks as follows:
voltage -------------- multiplier
1,7 -------------- 0,1
3 --------------
5--------------
6,7--------------

7,2 -------------- 0,3
8--------------

4 -------------- 0,1
1,6--------------

2,9 -------------- 0,03

Homework Equations


My question is: should I multiply the measured value by that multiplier or is it somehow already precalculated?

Any way I leave this, I get a wrong plot...

The Attempt at a Solution

 
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  • #2
Yes, you should multiply the measured value by the multiplier. When a value is out of scale, the voltage is multiplied by the corresponding multiplier in order to be visible on the scale.
 

1. What is a third octave filter?

A third octave filter is an electronic device used to filter out specific frequency bands from a signal. It is commonly used in audio and acoustics applications to narrow down the frequency range and improve the quality of the sound. It works by attenuating or reducing the amplitude of frequencies outside the specified range, while allowing frequencies within the range to pass through.

2. How does a third octave filter work?

A third octave filter works by using a combination of capacitors, resistors, and inductors to create a circuit that attenuates or blocks certain frequencies. The specific combination of these components creates a bandpass filter that allows frequencies within a specified range to pass through, while blocking frequencies outside that range.

3. What is the purpose of using a third octave filter?

The purpose of using a third octave filter is to improve the quality of sound by reducing unwanted frequencies. It can be used to eliminate background noise, improve speech intelligibility, or enhance the overall sound quality of a system. It is commonly used in audio systems, loudspeakers, and recording studios.

4. How is the voltage obtained from a third octave filter?

The voltage obtained from a third octave filter depends on the specific circuit design and the input voltage. The filter will attenuate or reduce the amplitude of certain frequencies, but the overall output voltage will depend on the input voltage and the frequencies that are allowed to pass through the filter.

5. What are the applications of a third octave filter?

A third octave filter has many applications in audio and acoustics, including sound reinforcement systems, equalizers, and noise reduction. It can also be used in scientific and industrial settings to analyze and control specific frequency ranges. Additionally, it is commonly used in music production and recording to enhance the overall sound quality of a recording.

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