Plus de résolution 16 bits

Bonjour,
J’espère que je suis dans la bonne section. Je viens d’acquérir un petit dac Topping D10S pour envoyer le flux USB de mon Mac mini vers le pré ampli. Le souci c’est quand je lis un fichier en 16 bits en streaming ou sur le disque, la lecture se fait en 32 bits… Je n’ai pas de souci avec les fichiers en 24 bits qui sont reconnus comme tels. La fréquence est elle toujours bonne. Avec le lecteur Qobuz, pas de souci la résolution est bien reconnue en 16 bits. A noter que quand je vais dans la sortie audio du mac quand je sélectionne le D10S la résolution 16 bits disparait, ne restent que 24 et 32 bits.
Connaissez vous ce problème?
Merci d’avance.

Bonjour @LETONDOR,

Pouvez-vous nous envoyer une copie de votre “Debug Info” ? Vous le trouverez dans les paramètres d’Audirvana>Général>Debug Info

Remarque: En cliquant sur le bouton Debug Info, Audirvana copie automatiquement tout son contenu, il ne vous reste plus qu’à le coller en réponse de ce message

Bonjour Damien,
Merci pour votre réponse.
Voici le Debug Info.
Et merci pour votre aide.

Audirvana Mac Version 3.5.44 (3574)
macOS 10.15.7 with 16384MB RAM

Licence enregistrée pour Thierry LETONDOR

SIGNAL PROCESSING:

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

UPSAMPLING:
SoX custom frequencies
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: 7 folders
AUTO: /Users/thierryletondor/Desktop/Musique/1745-2XHDST1074-ballads-dsd128-2ch
AUTO: /Users/thierryletondor/Desktop/Musique/2626-2XHDFT1143-audiophile-analog-collection-vol-1-dxd-2ch
AUTO: /Users/thierryletondor/Desktop/Musique/741-take-one-dxd-2ch
AUTO: /Users/thierryletondor/Desktop/Musique/Grace Mahya - Last Live at Dug (2007) [Japan] (FLAC Stereo 24-96)
AUTO: /Users/thierryletondor/Desktop/Musique/Higher
AUTO: /Users/thierryletondor/Desktop/Musique/Standard Request Live At The Keystone Korner Tokyo, Vol.1
AUTO: /Users/thierryletondor/Desktop/Musique/Standard Request Live in Tokyo #1
iTunes/Music library synchronization: last synchronized on Sat Feb 13 11:56:41 2021

Library database path: /Users/thierryletondor/Library/Application Support/Audirvana/AudirvanaPlusDatabaseV2.sqlite

ACTIVE STREAMING SERVICES
Qobuz: Connected as Qobuz Studio

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

CoreAudio audio path, buffer I/O frame size: 512

Max. memory for audio buffers: 14656MB

Local Audio Engine:
Exclusive access: Enabled
Integer mode: Enabled

Preferred device:
D10s
Model UID:D10s:152A:8750
UID:AppleUSBAudioEngine:Topping:D10s:14200000:1

Active Sample Rate: 384kHz
Hog Mode is off

Bridge settings:
Sample rate limitation: 384kHz
Sample rate switching latency: none
Limit bitdepth to 24bit: OFF
Mute during sample rate change: OFF

Selected device:
Local audio device
ID 0x29 D10s Manufacturer:Topping
Model UID:D10s:152A:8750 UID:AppleUSBAudioEngine:Topping:D10s:14200000:1

8 available sample rates up to 384000Hz
44100
48000
88200
96000
176400
192000
352800
384000
Audio buffer frame size : 116 to 4096 frames
Current I/O buffer frame size : 512
Volume Control
Physical: Yes
Virtual: Yes
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
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 0x2a 2 channels starting at 1
24 virtual formats:
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 384kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 352.8kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 192kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 176.4kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Float 88.2kHz
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
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 384kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 352.8kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 192kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 176.4kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 384kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 352.8kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

32 physical formats
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 384kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 352.8kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 192kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 176.4kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 96kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 88.2kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 48kHz
2 ch Mixable linear PCM Interleaved 32 little endian Signed Integer 44.1kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 384kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 352.8kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
2 ch Mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
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 88.2kHz
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
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 384kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 352.8kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 192kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 176.4kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 96kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 88.2kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 48kHz
2 ch Non-mixable linear PCM Interleaved 32 little endian Signed Integer 44.1kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 384kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 352.8kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 192kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 176.4kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 96kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 88.2kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 48kHz
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

Local devices found : 2
Device #0: ID 0x38 Sortie intégrée Manufacturer: Apple Inc. Model UID: AppleHDA:88 UID: AppleHDAEngineOutput:1B,0,1,2:0
Device #1: ID 0x29 D10s Manufacturer: Topping Model UID: D10s:152A:8750 UID: AppleUSBAudioEngine:Topping:D10s:14200000:1

UPnP devices found : 0

Audirvana dépend des capacités de votre DAC, pour du 16 bits vous aurez du 32 car il ne gère pas par défaut le 16 bit:

2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer aligned low in 32bit 44.1kHz

Merci beaucoup pour cette explication.
Est ce qu’à votre avis c’est un défaut du Dac?
Car il était sensé gérer de 16 à 32 bits