DSP-Tools

A framework for prototyping DSP systems. Includes a collection of sources and blocks which allow for operations on the sources. The framework will fetch data from a source when necessary as opposed to having a big queue. Part of the reason for this is that the system is designed to operate over an unbounded horizon.

Take the following example:

from signal_generators.basic_signals import StepNumber

step_number = StepNumber()

# THIS WILL INFINITE LOOP
for step in step_number():
    print step

While this may seem undesirable, virtually all real DSP systems are running over an unbounded horizon. This allows for taking any code developed with the framework and using it in a more realistic environment, where sources and sinks are interacting with external systems.

However, preventing infinite loops is easy! DSP-Tools supports a few signal types such as Finite Length Signals. Because of the lazy data fetch, the output signals from a system can just be wrapped into a FiniteLengthSignal as shown below.

from signal_generators.basic_signals import StepNumber
from signal_generators.signal_types import FiniteLengthSignal


NUM_STEPS = 10


step_number = StepNumber()
step_number_finite = FiniteLengthSignal(NUM_STEPS, step_number)

for step in step_number_finite():
    print step