Signal Processing Toolbox

Frequency Specifications Region: Raised Cosine

Raised Cosine - FIR Window

Select the units for frequency specifications from the Units list:

• Normalized (0 to 1), where 1 corresponds to the Nyquist frequency
• Hz (default)
• kHz
• MHz
• GHz

Specify the following frequencies in the text boxes:

• Fs (sampling frequency)--required when Hz, kHz, MHz, or GHz is selected
• Fc--cutoff frequency, the frequency at which the magnitude response is 6 dB below the passband gain

Select either:

• Bandwidth--enter the width of the transition zone.
• Rolloff--determines the excess bandwidth from ideal in the transition zone.
  Cutoff frequency * rolloff = excess bandwidth.
  For example, if the cutoff frequency is 12000 Hz and Rolloff is 0.25, the excess bandwidth is 3000 Hz so the transition would be from 9000 to 15000 Hz.

Frequency Specifications Region: Lowpass

Frequency Specifications Region: Highpass

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