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Both sides previous revision Previous revision Next revision | Previous revision Next revision Both sides next revision | ||
sdr:fm [2015/08/22 23:53] r Better fm broadcast. |
sdr:fm [2015/08/22 23:55] r typo again. |
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Explanation: | Explanation: | ||
- | The audio source has the device name **pulse* which means it will appear as a recording device for pulseaudio. It uses a sample rate of 48KHz, which is a common sample rate for an audio output. It could have been 44.1KHz. It's set in the **audio_rate** variable. | + | The audio source has the device name **pulse** which means it will appear as a recording device for pulseaudio. It uses a sample rate of 48KHz, which is a common sample rate for an audio output. It could have been 44.1KHz. It's set in the **audio_rate** variable. |
The audio signal is passed to the **WBFM Transmit** module which gives the frequency modulated signal as the output. Its options **Audio Rate** and **Quadrature Rate** are the input sampling rate and the output sampling rate, respectively. | The audio signal is passed to the **WBFM Transmit** module which gives the frequency modulated signal as the output. Its options **Audio Rate** and **Quadrature Rate** are the input sampling rate and the output sampling rate, respectively. | ||
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<note tip> | <note tip> | ||
The sample rates supported by the rad1o can be listed using the hackrf_transfer command: | The sample rates supported by the rad1o can be listed using the hackrf_transfer command: | ||
- | # Sample rate in Hz (8/10/12.5/16/20MHz, default 10MHz). | + | |
+ | ## Sample rate in Hz (8/10/12.5/16/20MHz, default 10MHz). | ||
</note> | </note> |