Hello,
I came back to Audirvana a few days after a short trip. The application was working perfectly before my departure.
Now, not a sound comes out, why?
All my settings should be fine, I think.
It’s like I’m missing to identify an on/off button somewhere… (???)
I’m on a 27" iMac / OS 10.14.6. / DAC : HAPI MERGING AES 67 /
Any help in identifying this mystery?
Thank you.
Nice device, could it be a networking issues? Have to tried to play to it from some other app?
Yes, Damien. I can see the Merging in Audirvana. It was autoselected by Audirvana itself.
I have to say that Roon runs without any problem, but of course it is completely off if I choose to play Auvirvana.
Thanks
To reply more precisely Damien: I have all the settings available. If I click on a song, the scroll bar loads in grey, then after a few seconds it reads blue… except that no sound comes out. The ear near the speaker doesn’t even hear the mini-breath of any connection from the computer to the Merging and to the amplifiers.
Yes, Roon plays perfectly… 
Close Roon and all other software. Maybe something is hogging the device interface.
Roon is perfectly closed when I play Audirvana.
Well, I see that the subject is not progressing. So I’ll stay on Roon. Good listening to you.
It’s difficult to troubleshoot with so little information. How can somebody figure out why it suddenly stopped working? Have you tried to install the virtual audio device driver?
Hi, bitracer (Did you catch a lot of bits ? )
That is the problem : why ? … Unbelievable.
I play from my computer Macintosh 27" . OS 10.14.6
The signal comes out from the computer through Ethernet directly to the DAC (Merging Hapi Ravena AES67)
I have downloaded the last Merging driver (Aneman) to connect the system to the DAC. The configuration is now completely new.
The Audirvana application is 3.5.46.
Everything looks OK on the settings (Audirvana did itself the settings and I checked them to be sure).
It look like no signal goes out to the DAC.
A door stay closed/shut somewhere.
According to the virtual audio device driver (?) is there another driver I should download and use with the Audirvana application ?
Thanks.
Have you tried to play in Audrivana using the local audio device? Just to see that it outputs sound to any device.
it doesn’t work in these conditions either 
The scroll bar at the bottom of the screen loads in grey, then in blue. All visual indicators work as if the music is playing. The external hard drive flashes as it sends the music signals…
I don’t understand.
Try to switch off exclusive access.
Can you paste the debug info here? I have another idea but I need to see the debug info.
please find the debug infos :
Audirvana Mac Version 3.5.46 (3576)
macOS 10.14.6 with 32768MB RAM
Licence enregistrée pour Kostia MILHAKIEV
SIGNAL PROCESSING:
Polarity Inversion:
Globally: OFF
Per track: ON
Effects plugins NOT ACTIVE
UPSAMPLING:
SoX with device max frequency upsampling
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 66
AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: None
SW volume control: OFF
LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/Storeva SSD/ MUSIQUE
iTunes/Music library synchronization: not synchronized
Library database path: /Users/kostiamilhakiev/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite
ACTIVE STREAMING SERVICES
Qobuz: Connected as Qobuz Hi-Fi Sublime+
=================== AUDIO DEVICE ========================
CoreAudio audio path, buffer I/O frame size: 512
Max. memory for audio buffers: 29696MB
Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled
Preferred device:
Merging RAVENNA/AES67
Model UID:MergingRAVENNAAudioDeviceModelUID
UID:MergingRAVENNAAudioDevice:0
Active Sample Rate: 192kHz
Hog Mode is off
Bridge settings:
Sample rate limitation: none
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: ON
Selected device:
Local audio device
ID 0x3d Merging RAVENNA/AES67 Manufacturer:Merging Technologies S.A.
Model UID:MergingRAVENNAAudioDeviceModelUID UID:MergingRAVENNAAudioDevice:0
9 available sample rates up to 705600Hz
44100
48000
88200
96000
176400
192000
352800
384000
705600
Audio buffer frame size : 58 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: No
Virtual: No
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: DSD via PCM 1.1
Device audio channels
Multichannel: 8 channels
Preferred stereo channels L:1 R:2
Channel bitmap: Oxff, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1
Channel 2 mapped to 2
Channel 3 mapped to 3
Channel 4 mapped to 4
Channel 5 mapped to 5
Channel 6 mapped to 6
Channel 7 mapped to 7
Audio channels in use
Number of channels: 8
Use as stereo device only: No
Simple stereo device: No
1 output streams:
Number of active channels: 8, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1
Channel #2 :Stream 0 channel 2
Channel #3 :Stream 0 channel 3
Channel #4 :Stream 0 channel 4
Channel #5 :Stream 0 channel 5
Channel #6 :Stream 0 channel 6
Channel #7 :Stream 0 channel 7
Stream ID 0x3e 8 channels starting at 1
9 virtual formats:
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 705.6kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
9 physical formats
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 705.6kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
Local devices found : 2
Device #0: ID 0x2e Sortie intégrée Manufacturer: Apple Inc. Model UID: AppleHDA:122 UID: AppleHDAEngineOutput:1B,0,1,2:0
Device #1: ID 0x3d Merging RAVENNA/AES67 Manufacturer: Merging Technologies S.A. Model UID: MergingRAVENNAAudioDeviceModelUID UID: MergingRAVENNAAudioDevice:0
UPnP devices found : 0
Reduce the pre-load buffer to 5000MB. Try all combinations with integer mode and exclusive access. Disable upsampling. Also try with a 16/44.1 file.
From what I see in the debug log, even though the exclusive access is turned on, the interface hogging is off. This makes me thing that something else is holding the Ravenna virtual audio interface busy. That could be the reason why you don’t get any sound.
It works, but I still don’t understand why.
I adjusted according to your advice, then I went back, step by step, to the previous settings made by the application itself to understand where the problem was precisely, and it still plays (?).
I think it has to do with the sampling frequency which should not exceed 192 Khz. I’ll send you the debug info. Maybe there’s something you’ll understand better than me. Thanks for the help.
Audirvana Mac Version 3.5.46 (3576)
macOS 10.14.6 with 32768MB RAM
Licence enregistrée pour Kostia MILHAKIEV
SIGNAL PROCESSING:
Polarity Inversion:
Globally: OFF
Per track: ON
Effects plugins NOT ACTIVE
UPSAMPLING:
SoX with device max frequency upsampling
SoX filter parameters
Bandwidth at 0dB = 99.5
Filter max length = 30000
Anti-aliasing = 100
Phase = 66
AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: None
SW volume control: OFF
LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/Storeva SSD/ MUSIQUE
iTunes/Music library synchronization: not synchronized
Library database path: /Users/kostiamilhakiev/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite
ACTIVE STREAMING SERVICES
Qobuz: Connected as Qobuz Hi-Fi Sublime+
=================== AUDIO DEVICE ========================
CoreAudio audio path, buffer I/O frame size: 512
Max. memory for audio buffers: 7814MB
Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled
Preferred device:
Merging RAVENNA/AES67
Model UID:MergingRAVENNAAudioDeviceModelUID
UID:MergingRAVENNAAudioDevice:0
Active Sample Rate: 192kHz
Hog Mode is off
Bridge settings:
Sample rate limitation: 192kHz
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: ON
Selected device:
Local audio device
ID 0x3d Merging RAVENNA/AES67 Manufacturer:Merging Technologies S.A.
Model UID:MergingRAVENNAAudioDeviceModelUID UID:MergingRAVENNAAudioDevice:0
9 available sample rates up to 705600Hz
44100
48000
88200
96000
176400
192000
352800
384000
705600
Audio buffer frame size : 58 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: No
Virtual: No
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: DSD via PCM 1.1
Device audio channels
Multichannel: 8 channels
Preferred stereo channels L:1 R:2
Channel bitmap: Oxff, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1
Channel 2 mapped to 2
Channel 3 mapped to 3
Channel 4 mapped to 4
Channel 5 mapped to 5
Channel 6 mapped to 6
Channel 7 mapped to 7
Audio channels in use
Number of channels: 8
Use as stereo device only: No
Simple stereo device: No
1 output streams:
Number of active channels: 8, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1
Channel #2 :Stream 0 channel 2
Channel #3 :Stream 0 channel 3
Channel #4 :Stream 0 channel 4
Channel #5 :Stream 0 channel 5
Channel #6 :Stream 0 channel 6
Channel #7 :Stream 0 channel 7
Stream ID 0x3e 8 channels starting at 1
9 virtual formats:
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 705.6kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
9 physical formats
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 705.6kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
8 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
Local devices found : 2
Device #0: ID 0x2e Sortie intégrée Manufacturer: Apple Inc. Model UID: AppleHDA:122 UID: AppleHDAEngineOutput:1B,0,1,2:0
Device #1: ID 0x3d Merging RAVENNA/AES67 Manufacturer: Merging Technologies S.A. Model UID: MergingRAVENNAAudioDeviceModelUID UID: MergingRAVENNAAudioDevice:0
UPnP devices found : 0
I would suggest you go with the power of 2 upsampling, if you must upsample. If it still works, keep the exclusive access on as well as the integer mode.