Question about Ensoniq AudioPCI es1370 support in FreeBSD 12.1

[Aki Ketolainen]

Hi,

I'm not sure if this question comes to the correct place but somebody on 
IRC
said you could maybe be able answer my question.

I'm testing helloSystem (https://github.com/helloSystem/hello) in a Qemu 
VM
on Linux. helloSystem is running FreeBSD 12.1.

The ALSA and es1370 sound card settings work in a CentOS 7 Qemu VM on
the same host with no audio crackling.

If I use the pulseaudio and Intel HDA options for the helloSystem Qemu 
VM,
the audio works ok but I can hear some crackling.

If I change the audio options for ALSA and es1370 sound card for the 
helloSystem
Qemu VM, the audio becomes weird, like it's stretched 10x.

Here's how I start the helloSystem Qemu VM:

QEMU_AUDIO_DRV=alsa qemu-system-x86_64 -machine type=q35,accel=kvm 
-enable-kvm -cpu host -smp 2 -m 4096 -device virtio-net,netdev=vmnic 
-netdev user,id=vmnic,hostfwd=tcp::5222-:22 -vga std -audiodev alsa,id=1 
-device ES1370,audiodev=1 -no-quit -drive 
format=raw,file=${HOME}/.qemu/hello/hello.img

Here's how I start the CentOS 7 Qemu VM:

QEMU_AUDIO_DRV=alsa qemu-system-x86_64 -machine type=q35,accel=kvm 
-enable-kvm -cpu host -smp 2 -m 2048 -device virtio-net,netdev=vmnic 
-netdev user,id=vmnic,hostfwd=tcp::5222-:22,hostfwd=tcp::5280-:80 
-device qemu-xhci,id=xhci -device usb-tablet,bus=xhci.0 -vga virtio 
-audiodev alsa,id=1 -device ES1370,audiodev=1 -no-quit -drive 
format=raw,file=${HOME}/.qemu/centos_linux_7/centos_linux_7.img

Would you have an idea where to look for the solution to the stretched
audio problem with ALSA and es1370 sound card for the helloSystem Qemu 
VM ?

Best regards,

Aki Ketolainen
Turku, Finland