Open core legacy patcher- Dropouts during playback, interference noise

Origin
1

hi there

For some time now, I have noticed that when I play a track, there is suddenly either a disturbance (no music for about 5 seconds, but instead a strange, ugly noise). After that it continues normally. If I play the same track again, it no longer occurs, so the suspicion that it could be a faulty music file is not correct. The error cannot be reproduced… strangely enough, everything runs flawlessly for a long time until it suddenly strikes again…

Glad for help

my config :

Macmini 2012 osx sonoma (hacking with open core legacy patcher)
NAD M501 Dac
Mcintosh C220 preamp
mcintosh MC275 amp
Marten Getz speakers

2

More infornation please… Past your Debug Info here so folks can best help…

At first glance… It seems you are trying to squeeze too much from this ancient Mac Mini and that has been monkey’d with, by applying a hack… :thinking:

3

The old MacMini worked without any problems until recently - with all applications…:-).

Audirvana Origin 2.5.7 (20507)

macOS Version 14.2 (Build 23C64) with 8GB physical RAM

Connected account of : Andre Natterer

NETWORK
Status: available

SIGNAL PROCESSING:

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

UPSAMPLING:
r8brain not in use
r8brain filter parameters
Bandwidth = 99.5%
Stop band attenuation 218dB
Phase linear

AUDIO VOLUME:
Max allowed volume: 100
Replay Gain: None
SW volume control: OFF

LIBRARY SETTINGS:
Sync list: 1 folders
AUTO: /Volumes/Music Toshiba/
iTunes/Music library synchronization: not synchronized
Library database path: /Users/viper1/Library/Application Support/Audirvana/AudirvanaDatabase.sqlite

Remote Control server:
Listening on 127.0.0.1 on port 49465

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

Active method: Local

Max. memory for audio buffers: 3100MB

Local Audio Engine: CoreAudio
Exclusive access: ON
Integer mode: ON
Use max I/O buffer size: ON
Actual I/O buffer frame size: 512

Preferred device:
NAD NAD USB Audio 2.0
Model UID:NAD USB Audio 2.0:17AE:0005
UID:AppleUSBAudioEngine:NAD :NAD USB Audio 2.0:0000:1,2

Currently playing in Integer Mode:
Device: 10ch Non-mixable linear PCM Interleaved 24bits little endian Signed Integer, 40 bytes per frame 48kHz

Active Sample Rate: 48kHz
Hog Mode is on

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

Selected device:NAD USB Audio 2.0
Manufacturer: NAD
Model name: NAD USB Audio 2.0
Model UID: NAD USB Audio 2.0:17AE:0005
UID: AppleUSBAudioEngine:NAD :NAD USB Audio 2.0:0000:1,2
USB Vendor ID: 0x17ae
USB Product ID: 0x0005
ID 0x47

6 available sample rates up to 192000Hz
44100
48000
88200
96000
176400
192000
Audio buffer frame size : 14 to 4096 frames
Current I/O buffer frame size : 512

Volume Control
Physical: Yes
Virtual: Yes
Max volume alert: Disabled

MQA capability
Auto-detect MQA devices: Yes
Not a MQA device, user set to not MQA
DSD capability: Unhandled

Device audio channels
Multichannel: 10 channels
Preferred stereo channels L:1 R:2
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1
Channel 2 unused
Channel 3 unused
Channel 4 unused
Channel 5 unused
Channel 6 unused
Channel 7 unused
Channel 8 unused
Channel 9 unused

Audio channels in use
Number of channels: 10
Use as stereo device only: Yes
Simple stereo device: No

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 0x48 10 channels starting at 1
12 virtual formats:
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 48kHz
10 ch Mixable linear PCM Interleaved 32 little endian Signed Float 44.1kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

12 physical formats
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
10 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
10 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

Local devices found : 3
Device #0: ID 0x87 Ausgang (integriert)
Manufacturer: Apple Inc.
Model UID: AppleHDA:88
UID: AppleHDAEngineOutput:1B,0,1,2:0
Model name: Apple Inc. Ausgang (integriert)
Device #1: ID 0x78 HDMI
Manufacturer: Apple Inc.
Model UID: AppleHDA:88
UID: AppleHDAEngineOutputDP:1B,3,1,2:0:{CB3D-1140-00000000}
Model name: Apple Inc. HDMI
Device #2: ID 0x47 NAD USB Audio 2.0
Manufacturer: NAD
Model UID: NAD USB Audio 2.0:17AE:0005
UID: AppleUSBAudioEngine:NAD :NAD USB Audio 2.0:0000:1,2
USB Vendor ID: 0x17ae
USB Product ID: 0x0005
Model name: NAD USB Audio 2.0

UPnP

UPnP devices found : 1
Device #0: ID 0x0 : [LG] webOS TV UP75006LF
UID: uuid:8203bbc9-8f0d-707e-6a6d-b6836cf3af72
Location: http://192.168.188.55:1482/
Manufacturer: LG Electronics.
Model name: LG TV

Chromecast

Chromecast devices found : 2
Device #0: 65PUS8102/12
ID: 3be8d3effd9326678c6fe3ff21734e5e
Model name: TPM171E
Device #1: Onkyo TX-NR474 E5CF48
ID: 44eaec3158a1c38fe8c4aa14eac0c18a
Model name: Onkyo TX-NR474

4

I think all-bets-are-off when this 2012 Mac Mini is not supported in macOS Sonoma (ver. 14)

:notes: :eye: :headphones: :eye: :notes:

5

Opencore legacy is maybe the best software on the planet… it works perfectly if you have a ssd disc to run it.

They perfectly show that Apple is fooling consumers to buy new computers to run new macos. It doesn’t run slower, it is running like it should as fast as you have your initial macos in.

3 Likes
6

@Viper1

have you seen this update form OpenCore… since you are on 14.2

7

Hi

Yes, thx, i installed 14.2 with this update from OpenCore and the mac run without any probles. i am sure the problem not come from the mac.
greeez

8

yes, totaly agree - i work since Mojave with it - run without any problems on a macbook pro 2012 and macMini 2012. They do a very good job

9

Why are you expecting a sub-system layer to operate on a macOS platform topology that has completely different I/O API’s than what macOS 14 is built to run on, to perform like it would on the correct hardware and firmware interfaces?

:notes: :eye: :headphones: :eye: :notes:

10

There is no reason to question the functionality in all respects of an unsupported but tuned old Mac. I have 3 Macs (Macbook, Macbook Pro and Macmini all 2012) which are without ever an abnormal ending or limited functionality and this since Mojave. That alone answers your question about correct hardware/Firmware - unsupported or appl.prog interfaces. The speed is also absolutely sufficient. Audirvana runs just as perfectly all these years, whether the current issue has anything to do with the Mac or even with an external disk or DAC is not yet clarified.

OpenCore Legacy Patcher

2 Likes