chirp

Syntax

c = chirp(t)

c = chirp(t, f0)

c = chirp(t, f0, t1)

c = chirp(t, f0, t1, f1)

c = chirp(t, f0, t1, f1, shape)

c = chirp(t, f0, t1, f1, shape, phase)

Inputs

t

The times at which to evaluate the function.

Dimension: vector

f0

The frequency at t = 0 (default: 0 Hz).

Dimension: scalar

t1

The time at which to specify f1 (default: 1 sec).

Dimension: scalar

f1

The frequency at t = t1 (default: 100 Hz).

Dimension: scalar

shape

The shape of the chirp.

Type: string

The options are:

• 'linear' (default)
• 'quadratic'
• 'logarithmic'

phase

The phase shift at t = 0 (default: 0 degrees).

Dimension: scalar

Outputs

c

The chirp signal values.

Example

Plot a linear chirp signal.

t = [0:1:500]/250;
c = chirp(t, 5, 1, 10, 'linear');
plot (t, c);
xlabel('time');
ylabel('amplitude');

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