28 Nov
2022
28 Nov
'22
9:16 a.m.
White noise is, in general, due to format mismatch. I mean data types,
sample rate, number of channels etc...
I can see 2 causes
* Jack should be queried for the format by the application. If you have
the problem with many, it is not the case
* jack relay on drivers that return wrong informations or no
information or a default information. Do you have a "layer" between the
drivers (alsa oss etc...) and jack?
On Mon, 2022-11-28 at 09:14 +0100, Patrick Pouget wrote:
White noise is, in general, due to format mismatch. I
mean data
types, sample rate, number of channels etc...
I can see 2 causes
* Jack should be queried for the format by the application. If you
have the problem with many, it is not the case
* jack relay on drivers that return wrong informations or no
information or a default information. Do you have a "layer" between
the drivers (alsa oss etc...) and jack?
On Mon, 2022-11-28 at 09:03 +0500, Fabio G wrote:
Hello to all!undefined
I am experimenting with audio production under Linux Mint 20.3
(based on Ubuntu 20.04). I managed to install a low latency kernel,
then I have installed JACK, and Qsynth, following the steps
described in this tutorial:
http://www.tedfelix.com/linux/linux-midi.html
Everything seems to work fine if I use Qsynth and pulseaudio: I use
the vmpk simple virtual keyboard, and I have good output sound.
I have also tested JACK, as suggested in the tutorial using
$ jack-play test.wav
and I hear the right clean output.
However, when I tell Qsynth to use JACK, I have a lot of noise.
When I hit a key I have "white noise" for few milliseconds instead
of the key sound, and only when it fades I have a little bit of the
note that I was supposed to play.
I have the same "white noise" problem is I use Rose Garden.
I have tried to change the sample rate and the frames/period
settings, and also the Timeout, in JACK, but the problem stays the
same.
Thank you in advance for any help you can give.
Best,
Fabio
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