Digital Signal Processing Reference
In-Depth Information
(
a
)
(
b
)
FIGURE 10.30.
CCS plot of a PLL demodulator: (
a
) output showing eight different ampli-
tudes; (
b
) output buffer that receives only one period.
channel and the BPSK encoded voice signal through the left channel. See Example
2.3 for the use of an adapter or a stereo cable for obtaining stereo input and output.
In this case, you can use a stereo cable that connects the output of the first DSK
running the transmitter program to the input of the second DSK running
receiver.c
. Use voice or
TheForce.wav
as input. Verify the successful recep-
tion (demodulation) of the transmitted BPSK signal (
TheForce.wav
), with the
receiver output connected to a speaker.
See Example 4.13 for the use of an FIR filter function implemented in ASM code.
For this project,
N
8, so that the size of the circular buffer is 512 bytes (a 16-bit
value occupies two memory locations).
=
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