Microphone audio ok with 192000 sample rate but no audio with 384000

Software-Installation, SDR-Software, Modifikationen
Antworten
Benutzeravatar
hotel_charlie
Offline
Beiträge: 3
Registriert: Di Apr 05, 2016 11:02 am

Microphone audio ok with 192000 sample rate but no audio with 384000

Beitrag von hotel_charlie » Mo Apr 18, 2016 7:23 pm


Hi all. (I hope it is ok that I write also some English in your forum).

I have the RP running via ethernet fine. RX works well.

TX problem: I cannot get tx audio at all while using sample rate 384000 samples/sec in the Setup/Audio/primary dialog. When I set that sample rate to 192000 samples/sec it works. I would like to use 384000 samples/sek because then I can see at least the whole 20m band on rx (both cw and ssb segments of the band). Can you test and see if you experience the same on your system? In case, does anyone know why this happens?

(I have tested with two different USB headsets but not with soundcard and analog input yet).

Benutzeravatar
DD8JM
Site Admin
Offline
Beiträge: 378
Registriert: Mo Dez 01, 2014 1:41 pm

Re: Microphone audio ok with 192000 sample rate but no audio with 384000

Beitrag von DD8JM » Mo Apr 18, 2016 8:48 pm


Hi,

I just tested it, 384 KB Sample Rate, and 2048 Buffer size, it goes without problems.

I have a USB headset, but it heht with a normal headset to my Realtek sound card.

CPU utilization is then up to me at 21%.

Just try the buffer to reduce size, 1024 or 512th

My computer is a I7 and very fast.

I think it has something to do with the computer speed or the network.

I use openHPSDR 3.3.7

Best wishes

Jörg de DD8JM
Dateianhänge
ScreenShot177.jpg
ScreenShot176.jpg
ScreenShot175.jpg
Die Bässe breit die Höhen schmal das ist der Funk aus Wuppertal.

Benutzeravatar
hotel_charlie
Offline
Beiträge: 3
Registriert: Di Apr 05, 2016 11:02 am

Re: Microphone audio ok with 192000 sample rate but no audio with 384000

Beitrag von hotel_charlie » Mo Apr 18, 2016 10:05 pm


Hi Jorg, tnx for sreenshots. I had set the mic sample under VAC1 rate at a too low rate(I assumed it had to be set lower instead of higher). Now it works! Tnx!

Antworten