From d01a134a46b38c3c1957cf3fda87640549db90ab Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A1s=20Retzler?= Date: Sun, 8 Nov 2015 16:07:32 +0100 Subject: [PATCH] Update README.md --- README.md | 1 + 1 file changed, 1 insertion(+) diff --git a/README.md b/README.md index 1a4cd1b..11e498a 100644 --- a/README.md +++ b/README.md @@ -41,6 +41,7 @@ We will play these files in a loop, you can stop it with Ctrl+C. * `csdr bandpass_fir_fft_cc -0.1 0` is the lower sideband * `csdr bandpass_fir_fft_cc 0 0.1` is the upper sideband * I have experienced that if the SSB signal is in the center of the I/Q signal, then it is not transmitted correctly. The solution was to shift it. So the exact frequency should be around: `rpitx frequency + 48000*0.2 = rpitx frequency + 9600 Hz` +* If you want to get some compression on the speech, you can try `csdr fastagc_ff` instead of `csdr gain_ff 2.0`. **Generate NFM modulation:**