WBFM Transmit: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
(Added example flowgraph) |
||
| (One intermediate revision by one other user not shown) | |||
| Line 26: | Line 26: | ||
== Example Flowgraph == | == Example Flowgraph == | ||
This example flowgraph can be found at [https://github.com/gnuradio/gnuradio/blob/main/gr-analog/examples/fm_tx.grc]. | |||
[[File:Fm_tx_fg.png]] | |||
== Source Files == | == Source Files == | ||
Latest revision as of 16:55, 16 April 2025
Wide Band FM Transmitter.
Takes a single float input stream of audio samples in the range [-1,+1] and produces a single FM modulated complex baseband output.
The only difference with NBFM Transmit is the size of the internal low pass filter for interpolation. Here it has a cutoff frequency of 16kHz with 2KHz of transition width.
Parameters
- Audio Rate
- Sample rate of audio stream, >= 16k (integer)
- Quadrature Rate
- Sample rate of output stream (integer). Must be an integer multiple of audio_rate.
- Tau
- Preemphasis time constant (default 75e-6) (float)
- Max Deviation
- Maximum deviation in Hz (default 75e3) (float)
- Preemphasis High Corner Freq
- High frequency at which to flatten preemphasis; < 0 means default of 0.925*quad_rate/2.0 (float)
Example Flowgraph
This example flowgraph can be found at [1].
Source Files
- Python files
- [2]
- Block definition
- [3]