2-5

Using the Setup Wizard

kUsing Setup Wizard to Configure Settings for FFT (Frequency

Characteristics) Data Sampling

When you perform sound sampling executed the EA-200’s built-in microphone (by specifying [CASIO] - [Microphone] as the sensor), Setup Wizard will provide you with three options: [Sound wave], [Sound wave & FFT], and [FFT only]. “Sound wave” records the following two dimensions for the sampled sound data: elapsed time (horizontal axis) and volume (vertical axis). “FFT” records the following two dimensions: frequency (horizontal axis) and volume (vertical axis).

The following shows the settings for recording FFT data.

1.Perform the first two steps of the procedure under “To configure an EA-200 setup using Setup Wizard” on page 2-2.

2.On the “Select Sensor” screen, select [CASIO] - [Microphone] - [Sound wave & FFT] or [CASIO] - [Microphone] - [FFT only].

• This causes a “Select FFT Range” screen to appear.

You can select one of four settings for FFT Range. The setting you select will automatically apply the applicable fixed parameters shown below.

Setting

 

2 - 1000 Hz:

4 - 2000 Hz:

6 - 3000 Hz:

8 - 4000 Hz:

Parameter

 

1

2

3

4

 

 

 

 

 

 

 

 

 

 

 

Frequency pitch

 

2 Hz

4 Hz

6 Hz

8 Hz

 

 

 

 

 

 

Frequency max

 

1000 Hz

2000 Hz

3000 Hz

4000 Hz

 

 

 

 

 

 

Sampling interval

 

61 μsec

31 μsec

20 μsec

31 μsec

 

 

 

 

 

 

Number of samples

 

8192

8192

8192

4096

 

 

 

 

 

 

The following explains the meaning of each parameter.

Frequency pitch: Pitch in Hz at which sampling is performed

Frequency max: Upper limit of sampling frequency (lower limit is fixed at 0 Hz)

Sampling interval: Interval in μ seconds at which sampling is performed

Number of samples: Number of times sampling is performed

3.Use function keys 1 through 4 to select an FFT Range setting.

• Selecting an FFT Range causes the final Setup Wizard screen to appear.

4.Perform step 10 under “To configure an EA-200 setup using Setup Wizard” on page 2-2 to finalize the procedure.

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