Re: two USB sound cards on the same FreeBSD system with jackd

On Sat, 2023-04-01 at 17:51 +0200, Ralf Mardorf wrote:
> On Sat, 2023-04-01 at 16:35 +0200, white-wolf wrote:
> > to connect ardour and hydrogen with jack and alsa (or else)
> 
> Hi,
> 
> before I migrated from Linux real-time pro-audio to Apple for audio
> and
> other artwork, one of my domains was jackd with the alsa backend on
> Linux. On FreeBSD your backend is most likely "or else".

i use it on debian/Linux, it was worked
> 
> Most likely I cannot help you with FreeBSD audio, but at least I can
> contribute something related to your request in general, what ever
> operating system you are using.
> 
> While it's possible to use two audio devices on Linux and probably on
> FreeBSD, too, it requires to sync those audio devices, either by
> hardware, for low-end devices it might be possible via SPDIF
> (prosumer
> and professional devices provide word clock or the less good ADAT
> sync)
> or by software resampling.

my USB audiobox with my USB dongle was worked perfectly on debian

> 
> Is there any way to sync those two devices by hardware?
> 
> If not, google for FreeBSD and audio device sync by resampling
> software.

with jack and pluseaudio it's work
> 
> Related to the COVID-19 pandemic I was forced to use Zoom and similar
> hells on earth. It was already a PITA on iPadOS, just for video
> conferences without my guitars involved, by just using the integrated
> audio device.
> 
> In a nutshell, if possible use one audio device, don't try to make
> two
> audio devices a virtual single audio device, since you don't need two
> or
> more construction sites. Use one audio device, one input channel for
> the
> microphone and another channel for the guitar. Depending on your
> audio
> device you might need additional pre-amps.

i have

> 
> Using a wireless audio device makes it way more error prone. If
> possible
> avoid using a wireless device. Even if you should be fine with
> getting
> Bluetooth to work, the wireless related IRQs affect the whole audio
> chain.

no bluetooth headset but reconyze as sound card

> 
> Try to get a working setup by just using a single non-wireless audio
> device, you much likely have enough to struggle with getting Zoom or
> else to work, so don't make it more complicated by trying to sync two
> audio devices and don't make it extra complicated by using a wireless
> device.
> 
> Just my 2 Cents (I'm serious, this isn't an April hoax)
> Ralf

me too
regards,
white-wolf