Allowing microphone in Safari causes weird attenuation/glitchiness

[kestudi]

I am using Blackhole in Cubase to share DAW output with macOS / Quicktime screen recorder / Zoom /etc.

I was recording a Quicktime demo of a Safari page that required me to allow microphone to be used (a different microphone - my MacOs default mic is my webcam).

When I allowed the microphone on the page, the Blackhole input got super quiet and glitchy.

I tried the same test in Chrome and didn't run into the problem.

[devinroth]

You’ll have to tell me exactly how you had everything setup so I can try to replicate it. On Jan 4, 2021, 6:01 PM -0800, kestudi notifications@github.com, wrote:

I am using Blackhole in Cubase to share DAW output with macOS / Quicktime screen recorder / Zoom /etc. I was recording a Quicktime demo of a Safari page that required me to allow microphone to be used (a different microphone - my MacOs default mic is my webcam). When I allowed the microphone on the page, the Blackhole input got super quiet and glitchy. I tried the same test in Chrome and didn't run into the problem. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

[kestudi]

Running aggregate device: Duet USB + Built-in Output + Blackhole 16 ch (in that order), drift correction on the Duet.

I have an input-monitoring track in Cubase for my external Duet microphone, and then I rout it to multiple outputs (physical output + blackhole output, in the aggregate device).

I was recording a quicktime screen capture demo, capturing this page on Safari: https://singingcarrots.com/range-test

As soon as I clicked "Allow microphone" in Safari, the audio I was recording from blackhole got messed up.

Note: I noticed that even the MIC INPUT in Cubase got low (even though the Apogee Maestro - Duet interface UI - input level was unchanged). So the glitchiness might have been because I have a noise gate on the mic channel in Cubase, and the lowered input level made the gate stutter. So it may be a matter of attenuation. When I opened the "Audio Connections" menu in Cubase and simply delected and reselected the BlackHole device port, the level attenuation issue got fixed. But the problem would recur every time I allowed mic access on that page on Safari.

Hope that's clearer?

--

• Kc Daugirdas * Composer & Producer

www.daugirdasmusic.com http://www.daugirdasmusic.com www.elevantproductions.com http://www.elevantproductions.com

On Mon, Jan 4, 2021 at 9:58 PM Devin Roth notifications@github.com wrote:

You’ll have to tell me exactly how you had everything setup so I can try to replicate it. On Jan 4, 2021, 6:01 PM -0800, kestudi notifications@github.com, wrote:

I am using Blackhole in Cubase to share DAW output with macOS / Quicktime screen recorder / Zoom /etc. I was recording a Quicktime demo of a Safari page that required me to allow microphone to be used (a different microphone - my MacOs default mic is my webcam). When I allowed the microphone on the page, the Blackhole input got super quiet and glitchy. I tried the same test in Chrome and didn't run into the problem. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/ExistentialAudio/BlackHole/issues/256#issuecomment-754417662, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABUBFLP752ORMBJZ4RZJOY3SYKTCDANCNFSM4VUAFDWQ .

[devinroth]

Perfect. I’ll try to replicate the issue and let you know. On Jan 5, 2021, 3:02 PM -0800, kestudi notifications@github.com, wrote:

Running aggregate device: Duet USB + Built-in Output + Blackhole 16 ch (in that order), drift correction on the Duet.

I have an input-monitoring track in Cubase for my external Duet microphone, and then I rout it to multiple outputs (physical output + blackhole output, in the aggregate device).

I was recording a quicktime screen capture demo, capturing this page on Safari: https://singingcarrots.com/range-test

As soon as I clicked "Allow microphone" in Safari, the audio I was recording from blackhole got messed up.

Note: I noticed that even the MIC INPUT in Cubase got low (even though the Apogee Maestro - Duet interface UI - input level was unchanged). So the glitchiness might have been because I have a noise gate on the mic channel in Cubase, and the lowered input level made the gate stutter. So it may be a matter of attenuation. When I opened the "Audio Connections" menu in Cubase and simply delected and reselected the BlackHole device port, the level attenuation issue got fixed. But the problem would recur every time I allowed mic access on that page on Safari.

Hope that's clearer?

--

• Kc Daugirdas * Composer & Producer

www.daugirdasmusic.com http://www.daugirdasmusic.com www.elevantproductions.com http://www.elevantproductions.com

On Mon, Jan 4, 2021 at 9:58 PM Devin Roth notifications@github.com wrote:

You’ll have to tell me exactly how you had everything setup so I can try to replicate it. On Jan 4, 2021, 6:01 PM -0800, kestudi notifications@github.com, wrote:

I am using Blackhole in Cubase to share DAW output with macOS / Quicktime screen recorder / Zoom /etc. I was recording a Quicktime demo of a Safari page that required me to allow microphone to be used (a different microphone - my MacOs default mic is my webcam). When I allowed the microphone on the page, the Blackhole input got super quiet and glitchy. I tried the same test in Chrome and didn't run into the problem. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe.

— You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub https://github.com/ExistentialAudio/BlackHole/issues/256#issuecomment-754417662, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABUBFLP752ORMBJZ4RZJOY3SYKTCDANCNFSM4VUAFDWQ .

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe.

[kestudi]

Ps I’m on Mojave

[devinroth]

What is your audio buffer size in Cubase?

[kestudi]

256

[devinroth]

Don't worry. I haven't forgotten about this. Just need to find a way to reproduce it.

[devinroth]

You also need drift correction on BH.

[kestudi]

OK