Casio FX-9750GII-SC User Guide - Page 334
Using Setup Wizard to Con Settings for FFT Frequency, Characteristics Data Sampling, Setting
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2-5 Using the Setup Wizard k Using 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. Parameter Setting 2 - 1000 Hz: 1 Frequency pitch 2 Hz Frequency max 1000 Hz Sampling interval 61 μsec Number of samples 8192 4 - 2000 Hz: 2 4 Hz 2000 Hz 31 μsec 8192 6 - 3000 Hz: 3 6 Hz 3000 Hz 20 μsec 8192 8 - 4000 Hz: 4 8 Hz 4000 Hz 31 μsec 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. 20051101