Audio Dropping on One Channel - DSD 512 Upsample

Hello, I’m using Audirvana 3.5.13 on Windows, streaming TIDAL, and using an iFi Micro iDSD Black Label. When upsampling to DSD512, some songs have a one second audio drop in one channel (either left or right) at consistent times during the song such as 1:24 or within the first 10 seconds. My debug log noted “DEBUG Audirvana.App - SDM filter has diverged on channel 1 => resetting it” on either channel 1 or 0 when the audio drops.

These audio drops on one channel appear to be released to the DSD filter used. For example. songs have no audio drops on B8, but B7 causes drops. I’ve experimented with different ASIO buffer and pre-load settings but the problem persists.

Debug info:
Audirvana 3.5.13

SIGNAL PROCESSING:

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

UPSAMPLING:
SoX to DSD512 with filter type B 8th order
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: D:\Music
Library database path: C:\Users-----\AppData\Local\Audirvana\AudirvanaPlus\AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES
TIDAL: Connected as HIFI

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

Max. memory for audio buffers: 10792MB

Local Audio Engine:ASIO 2 driver version 794

Preferred device:
iFi (by AMR) HD USB Audio
Model UID:iFi (by AMR) HD USB Audio
UID:iFi (by AMR) HD USB Audio

Active Sample Rate: 22579.2kHz

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
iFi (by AMR) HD USB Audio Manufacturer:
Model UID:iFi (by AMR) HD USB Audio UID:iFi (by AMR) HD USB Audio

14 available sample rates up to 22579200Hz
44100
48000
88200
96000
176400
192000
352800
384000
705600
768000
2822400
5644800
11289600
22579200
Volume Control
Physical: No
Virtual: No
MQA capability
Auto-detect MQA devices: No
Not a MQA device, user set to not MQA
DSD capability: Raw DSD (MSB)
Device audio channels
Preferred stereo channels L:0 R:1
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
2 ch Integer PCM 32bit little endian 44.1kHz
2 ch Integer PCM 32bit little endian 48kHz
2 ch Integer PCM 32bit little endian 88.2kHz
2 ch Integer PCM 32bit little endian 96kHz
2 ch Integer PCM 32bit little endian 176.4kHz
2 ch Integer PCM 32bit little endian 192kHz
2 ch Integer PCM 32bit little endian 352.8kHz
2 ch Integer PCM 32bit little endian 384kHz
2 ch Integer PCM 32bit little endian 705.6kHz
2 ch Integer PCM 32bit little endian 768kHz
2 ch DSD 8bit big endian in 8bit chunk 2822.4kHz
2 ch DSD 8bit big endian in 8bit chunk 5644.8kHz
2 ch DSD 8bit big endian in 8bit chunk 11289.6kHz
2 ch DSD 8bit big endian in 8bit chunk 22579.2kHz

Local devices found : 1
Device #0: iFi (by AMR) HD USB Audio Manufacturer: Model UID: iFi (by AMR) HD USB Audio UID: iFi (by AMR) HD USB Audio

UPnP devices found : 0

Audirvana do this to not have a loud noise to your speaker because the music has been registered at a too high volume level. There is two things you can do:

  • change the setting of the safe volume reduction to 3dB or more in the DSD upsampling settings.
  • calculate replay gain for the album which have this issue

Thanks for the suggestions! A volume reduction of -6DB doesn’t seem to help on B7/B8 filters. However, the C filter does not produce these issues with a reduction of -3DB. Do the SDM filters impact the volume of a track and is there an option within Audirvana to apply >-6DB volume reduction?

Since I primarily use TIDAL, the replay gain calculation doesn’t have an applicable option and enabling “preserve album dynamics” seems to impact audio quality by being excessively quiet (noticing a -12.9 gain reduction on a track).

Would you recommend sticking with the C filter for DSD512 upsampling, especially for TIDAL tracks with a high volume level?

You can stick to Filter C. Can you give us the track or the album you used for your test?