There are two signals in the code provided in the question. I am assuming here that only the first signal is used and the second one is unused. Accordingly, I have mentioned some reference input values for the first signal, and these values can be referred for the second signal too (if used).
- Center-frequency of signal1 in Hz-
signal_freq1 = 1000 % since we want to generate 1 khz frequency
- num_cycles1 = 5 % since 5 is a common cycle number
- Time increment1 (del_t1)-
For audio, a common sampling rate is 44100 Hz, so-
del_t1 = 1/44100
- Total signal duration (total_time1)-
This must be at least as long as your window, ie, Window duration = num_cycles1 / signal_freq1
For 5 cycles at 1000 Hz:
total_time1 = 5 / 1000 = 0.005 sec
total_time1 = 0.01 (10 ms - approx)
- Offset time-
If you want the signal to start at the beginning:
offset_time1 = 0
We can set the second signal parameters to 0 (if unused). On using the above input values, we can generate the following 1 khz frequency, as seen in the screenshot below.
I hope the above response answers the question.
