开云体育

We zero out all bins except the central bins as a part of convolution filtering.

And for transmit / speaker, should such offset be used or 0 centered sample signal can be used? - Rafael

This offset will show as dc spike (and it does) on bin zero. We don't display or use that bin at all. - f

The resistor that supplies power to LM380 is probably charred. Replace or short it.

There seem to be an offset according to capture level and signal intensity, but I can not (at least not easily) determine the offset. - Rafael

Paul, See the mixer functions of sound_sbitx.c, they should help.

Essentially that is what the loopback interfaces are. So what I have done is identified the existing loopback interfaces and how they are used, I have then created a new pair ready to route the sbitx

Is there a constant offset? Try listening to a steady carrier which should result in a sine wave in the audio.

There is something wrong. I'm looking at the samples I get from the radio rx path - I don't see negative samples, just positive ones, but the sample format is signed 32 bits. When reading from

Robert, The audio frequency final amplifier uses LM380N, which can operate from 10V to 22V. If you use it from an external battery, it is possible that the voltage of the battery drops below 10V. In

I searched for LOG programs because the sBitx 7" LCD display with 800x480 pixels is too small for all the published programs. The useful surface of the screen determines what can fit and I found quite

Hi Gordon While that may be possible I think it might need a bit more work, however once the routing of audio is possible to a USB headset or other audio device, then yes if for example you had

Just to be aware, when there is no USB boot drive connected, a splash screen is displayed until the pi boots from the SD card inviting you to press a key, don’t, be patient and wait for the pi to

Hi, is anyone using full FlDigi?? Still curious about questions and the original post.

Regarding booting from an external USB device ... ... you can change the boot order in the "raspi-config" terminal program, and just leave the micro-SDcard in place. Just be aware that the Pi will

Paul, do I understand this properly: with your solution, a straight-through USB cable from your headset output to a USB connector on a DIFFERENT computer, would appear to be the digital output of

Hi Ben. The same as above except change the values after MONO and ARIAL. I've made the values to change in *BOLD *

And while we’re on the subject, I’m legally blind and plugged in an external monitor, but sadly, whichever were used to draw on the screen cleverly arrange things rather than make stuff

I hit the send button too soon.. Anyway, here is the rest of the file where changes are needed.. I've highlighted the areas in bold that could affect RED/GREEN colorblindness. They are in RGB

I forgot another key area.. Let me get that to you in my next post.. Sorry.