I want to play Mono files in Stereo

I have some Mono files which only play in my left speaker on my laptop. I would like to change settings within Audirvana to be able to play the mono stream on both channels. I was able to fix this in Audirvana 3.5 and now I want to do this in Audirvana Studio as well. Thank you for your help in advance.

Hello @Telepatango,

Can you send us a copy of the “Debug Info” when you have this issue? You can get it in Audirvana Settings>My account

Please remove the line corresponding to your logged-in account to avoid displaying your email address and first name/last name publicly.

Note: By clicking on the Debug Info button, Audirvana automatically copies all its content, all you have to do is paste it in response to this message

Audirvana Studio 1.8.1 (10801)

macOS 12.0 with 16GB physical RAM

SIGNAL PROCESSING:

Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX not in use
SoX filter parameters
Bandwidth at 0dB = 99.5%
Filter max length = 30000
Anti-aliasing = 100
Phase = 66%

AUDIO VOLUME:
Max allowed volume: 65.5453
Replay Gain: None
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 5 folders
AUTO: /Users/dp/Music/Lossless Music PN
AUTO: /Users/dp/Music/Lossless Music/Neotango
AUTO: /Users/dp/Music/Lossless Music/Tango
AUTO: /Users/dp/Music/Lossy Tango
AUTO: /Users/dp/Music/Rare No Sharing Music
iTunes/Music library synchronization: not synchronized
Library database path: /Users/dp/Library/Application Support/Audirvana/AudirvanaDatabase.sqlite

Remote Control server:
Listening on 127.0.0.1 on port 61568

ACTIVE STREAMING SERVICES

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 480

Max. memory for audio buffers: 894MB
Exclusive access: Disabled
Integer mode: Enabled

Preferred device:
APPLE INC. SANS – AIRPODS PRO
Model UID:200e 4c
UID:50-1F-C6-88-25-03:output

Active Sample Rate: 48kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: 0.5s
Limit bitdepth to 24bit: ON
Mute during sample rate change: ON

Selected device:
Local audio device
ID 0x4a SANS – AirPods Pro
Manufacturer: Apple Inc.
Model Name: Apple Inc. SANS – AirPods Pro
Model UID: 200e 4c
UID: 50-1F-C6-88-25-03:output

2 available sample rates up to 48000Hz
16000
48000
Audio buffer frame size : 15 to 480 frames
Current I/O buffer frame size : 480
Volume Control
Physical: No
Virtual: Yes
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: Unhandled
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x4b 2 channels starting at 1
2 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
1 ch Mixable linear PCM Interleaved 32 little endian Signed Float 16kHz

2 physical formats
1 ch Mixable linear PCM Interleaved 16 little endian Signed Integer 16kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz

Local devices found : 4
Device #0: ID 0x4a SANS – AirPods Pro Manufacturer: Apple Inc. Model UID: 200e 4c UID: 50-1F-C6-88-25-03:output Model Name: Apple Inc. SANS – AirPods Pro
Device #1: ID 0x2a Apowersoft_AudioDevice Manufacturer: ma++ ingalls for Cycling '74 Model UID: com_apowersoft_driver_ApowersoftDevice:Soundflower UID: ApowersoftEngine:0 Model Name: ma++ ingalls for Cycling '74 Apowersoft_AudioDevice
Device #2: ID 0x46 U34G2G4R3 Manufacturer: Apple Inc. Model UID: AppleGFXHDA:0 UID: AppleGFXHDAEngineOutputDP:10001:0:{E305-3402-000005F5} Model Name: Apple Inc. U34G2G4R3
Device #3: ID 0x3c Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:57 UID: AppleHDAEngineOutput:1F,3,0,1,1:0 Model Name: Apple Inc. Built-in Output

UPnP devices found : 0

Can you select your speakers instead of your Airpod while you click on the debug info?

Audirvana Studio 1.8.1 (10801)

macOS 12.0 with 16GB physical RAM

SIGNAL PROCESSING:

Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

UPSAMPLING:
SoX not in use
SoX filter parameters
Bandwidth at 0dB = 99.5%
Filter max length = 30000
Anti-aliasing = 100
Phase = 66%

AUDIO VOLUME:
Max allowed volume: 65.5453
Replay Gain: None
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 5 folders
AUTO: /Users/dp/Music/Lossless Music PN
AUTO: /Users/dp/Music/Lossless Music/Neotango
AUTO: /Users/dp/Music/Lossless Music/Tango
AUTO: /Users/dp/Music/Lossy Tango
AUTO: /Users/dp/Music/Rare No Sharing Music
iTunes/Music library synchronization: not synchronized
Library database path: /Users/dp/Library/Application Support/Audirvana/AudirvanaDatabase.sqlite

Remote Control server:
Listening on 127.0.0.1 on port 64987

ACTIVE STREAMING SERVICES

=================== AUDIO DEVICE ========================

CoreAudio audio path, buffer I/O frame size: 4096

Max. memory for audio buffers: 894MB
Exclusive access: Disabled
Integer mode: Enabled

Preferred device:
APPLE INC. SANS – AIRPODS PRO
Model UID:200e 4c
UID:50-1F-C6-88-25-03:output

Currently playing in standard 32bit float mode
Device: 2ch Mixable linear PCM Interleaved 32bits little endian Signed Float, 8 bytes per frame 44.1kHz

Active Sample Rate: 44.1kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: none
Sample rate switching latency: 0.5s
Limit bitdepth to 24bit: ON
Mute during sample rate change: ON

Selected device:
Local audio device
ID 0x3c Built-in Output
Manufacturer: Apple Inc.
Model Name: Apple Inc. Built-in Output
Model UID: AppleHDA:57
UID: AppleHDAEngineOutput:1F,3,0,1,1:0

3 available sample rates up to 96000Hz
44100
48000
96000
Audio buffer frame size : 14 to 4096 frames
Current I/O buffer frame size : 4096
Volume Control
Physical: No
Virtual: Yes
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: Unhandled
Device audio channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x3d 2 channels starting at 1
3 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz

3 physical formats
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

Local devices found : 3
Device #0: ID 0x2a Apowersoft_AudioDevice Manufacturer: ma++ ingalls for Cycling '74 Model UID: com_apowersoft_driver_ApowersoftDevice:Soundflower UID: ApowersoftEngine:0 Model Name: ma++ ingalls for Cycling '74 Apowersoft_AudioDevice
Device #1: ID 0x46 U34G2G4R3 Manufacturer: Apple Inc. Model UID: AppleGFXHDA:0 UID: AppleGFXHDAEngineOutputDP:10001:0:{E305-3402-000005F5} Model Name: Apple Inc. U34G2G4R3
Device #2: ID 0x3c Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:57 UID: AppleHDAEngineOutput:1F,3,0,1,1:0 Model Name: Apple Inc. Built-in Output

UPnP devices found : 0

Have you made any change in the Audirvana 3.5 settings to make it works?

How did you do that with A 3.5 ??
It is easy to duplicate the mono/left into the right channel with any basic free sound editor or with GarageBand.

Some of my mono files are played on both left and right channels in Audirvana Studio. But many of my mono files are not. I still do not know why it suddenly worked in Audirvna 3.5. I was fooling around with the settings and suddenly the mono sound is sounding in both channels in Audirvana 3.5. I have about 1000 mono files I need to play in this app.

I believe it was this setting that solved the problem in Audirvana 3.5, from the debug information.

Audio channels in use
Number of channels: 2
Use as stereo device only: No
Simple stereo device: Yes

But I have the same debug settings in Audirvana Studio 1.8

What you can do is looking at a plugin that would help you about this: