[Samsung Galaxy Note 8 Questions and Answers] ant0nwax:
Hi XDA Community

Setup:

Native Instruments Komplete Audio 6 (connected to a USB 3.1 HUB because otherwise 48V Phantom Power does not work)

Two Condenser MICs connected to INPUT 1 and INPUT2 of the USB Sound card, powered by 48V

Samsung DEX Dock

Samsung Galaxy Note 8 (Single Sim) running Android 9 (2020 May Security Updates)

Findings:

1) Signal Messenger App

recording Voice Messages seems to use 44100 Hz recording, and the USB is most likely set to 48000 Hz. This results in crackling and digital noise in the recorded audio file

i played around with the Voice Recorder (see 2) and many other things, and Signal Messenger on DEX Screen suddenly started to record nearly correctly on 48000 Hz..

No digital noise

Records Line 1 and Line 2 onto just the left side of a stereo signal. Playback of that recording plays only on Left Speaker

After rebooting, today i cannot get this behaviour back, digital noise is there and i struggle again to find a solution how to tell Android 9 to use 48000 Hz for Signal Voice Recording or any other app with the lack of settings

i tried Voice Call with Signal Messenger on DEX Screen, but the Audio was forced to Earpiece or Speakerphone, especially the other side complained about crackling in sound quality which only disappeared, when i started Signal Messenger on the Mobile Screen on the Note 8, then it used only the internal mic and the Speakerphone, and other party said the quality is really good, but not what i want with the external mics

2a) Voice Recorder (there are several) https://play.google.com/store/apps/d....app.voicenote

can choose 44100 and 48000 Hz after my USB Soundcard is recognized and it also shows recording from External Mic Notification.

If I choose 48000 Hz the sound has no crackling or digital noise, it is crystal clear, but mono, it records both inputs on a mono track, stereo setting is greyed out

if i chose 44100 Hz i have digital noise, crackling.

uses system audio drivXDA

2b) Voice Recorder (another on) https://play.google.com/store/apps/details?id=com.splendapps.voicerec

can choose 44100 and 32000 Hz and you can even chose stereo and here it works

with 44100 Hz there is digital noise, but stereo

with 32000 Hz there is no digital noise, it is a preset called FM quality and i would like to use this for voice recording for broadcasting on FM later, we run a show on the radio

3) Audio Evolution Mobile Studio DEMO Version

comes with custom audio drivers (like DAWs on Windows also use the ASIO Drivers that are invented by Steinberg Cubase)

can use all inputs from an USB soundcard for recording in any setup with any KHz or bit in mono or stereo setup

in my case this was the only tool where i can correctly record my stereo mic setup

very nice but cannot change System Settings since comes with custom LOW LATENCY driver

maybe i will buy this Actually i use Steinberg Cubase on Windows usually

4) Zoom App

i tried a Video Meeting with Zoom App on Android 9 on this Samsung Note 8 to a Windows Laptop in different country

did not work at all on DEX, crashed on the DEX screen after joining the meeting

neither external USB Soundcard worked

if you launch on the mobile only Speakerphone, Earpiece and Internal Mic is supported

video freezes for both parties if I switch to a different app and continues if i put Zoom App in foreground

5) Google Meet

runs on Samsung DEX Screen perfectly

can present my screen from DEX

did not test with external soundcard

other paties video continues to work in background

my camera that is shared to the other partie does not record if i switch Meet App to background

better than Zoom App on Android, no wonder its Google :)

6) WaveEditor

best Multitrack Audio Editor that I have seen so far

Works on Samsung DEX

not really for recording but for editing/cutting/postpro

Free Version has most features, but for pro editing like compressing/parametric EQ need to buy the Pro version, I am thinking about that

really good tool, I am very happy :)

Conclusion:

In Signal Messenger App I have also this crackling if I record a Voice Message (and it Runs on Dex), so I suppose I need to tell Android Audio Manager to use 48000 Hz on my USB Soundcard Inputs. But how? I would like to see a Audio Manager Configuration Tool, that can change this System Wide

How do I achieve this? Any Ideas are welcome. Thanks for reading and thanks for your time posting a reply. Good day.

PS, i also opened a support Case at Samsung (in Community and Support) kee p you updated if they answer.