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Questions tagged [spdif]

S/PDIF is a digital audio interconnect

S/PDIF is a digital audio interconnect used in consumer audio equipment over relatively short distances. The signal is transmitted over either a coaxial cable with RCA connectors or a fibre optic cable with TOSLINK connectors. S/PDIF interconnects components in home theatres and other digital high fidelity systems. S/PDIF is based on the professional AES3 interconnect standard.[1] S/PDIF can carry two channels of PCM audio or a multi-channel compressed surround sound format such as Dolby Digital or DTS.

S/PDIF is a data link layer protocol and a set of physical layer specifications for carrying digital audio signals between devices and components over either optical or electrical cable. The name stands for Sony/Philips Digital Interconnect Format (more commonly known as Sony Philips Digital Interface

bib ref : From Wikipedia, the free encyclopedia

51 questions
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8 answers

Sound output starts delayed

Via SPDIF hearable sound starts late, e. g. in the Test Sound dialog I maximally can hear "Left" when the voice should say "Front Left". When I have pavucontrol open (in the background) whilst clicking on the Test Sound it starts…
type
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12
votes
1 answer

UAC1 DAC (ODAC): digital vs analog output

I am trying to get Ubuntu to output I2S output to my ODAC. When I go into sound settings, I get two options. Digital Output (S/PDIF) (IEC958, so it must actually mean S/PDIF...) Analogue Output (This is the one I am confused about) From what I…
Michael Yoo
  • 221
9
votes
5 answers

Is there any way to save alsamixer settings other than alsactl store?

The root problem: for some reason, on boot, Ubuntu 14.04 disables (mutes) the S/PDIF output on my sound card. This question and its answers indicate that sudo alsactl store will store the alsamixer settings once I've unmuted the S/PDIF output, but…
JeanSibelius
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7
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2 answers

How can I use digital output instead of analog output for USB headset on 14.04?

I previously used 12.04 where I was able to use digital output for my USB headset and it worked miles better than analog. Now I installed (fresh install, deleted previous ubuntu partitions) 14.04 on the same computer and can only select analog…
vijum
  • 71
6
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1 answer

How do I stop audio clicking/popping over SPDIF?

Here's a recording of what my audio output sounds like. I am using a USB sound card identified as C-Media Electronics, Inc. CM106 Like Sound Device which is outputed over optical SPDIF to a Denon 5.1 receiver. In Windows, I have no issues with the…
Bryan
  • 61
5
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0 answers

Linux supported 5.1 SPDIF out external sound cards

My only requirement is to get 6 channel (5.1) digital audio out from USB and output it with a S/PDIF (optical/coaxial) port. So I'll connect the receiver (DAC) and it does the decoding + playback. I'm looking for an external sound card with a…
inckka
  • 205
5
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2 answers

What does USB DAC "Analog Output" mean?

I just connected my new Rega DAC to the computer via USB, it popped up in the sound settings, and choosing it there directs sound to it just fine. What confuses me, however, is that it says "Analog Output". What does that mean in this context? I…
njlarsson
  • 190
5
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2 answers

How can I enable digital output on a FiiO E7 without ending session?

When I plug my FiiO E7 USB Audio DAC & Amp in Ubuntu 13.04, it is recognized as Audio DAC but only via the Analog Output port. I have to log-out and in again before the USB Audio DAC Digital Output (S/PDIF) comes available in Sound settings, which…
Janghou
  • 6,035
4
votes
4 answers

How to save volume settings for digital output (S/PDIF)?

In Sound Settings I can choose between analogue and digital output. When I choose "Digital Output (S/PDIF)" I have to decrease the volume every time after I boot up. What could I do for saving these settings automatically (at shut down)? These are…
Jakob
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4
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1 answer

How to turn the Red Light (infrared or optical sound output light) off?

There is a red light turned on (it seems an infrared light or optical sound) when I boot Ubuntu, and it remains always on, but not when I boot MacOS in a MacBook Pro. How can I save energy with Ubuntu as much as with MacOS and have it turned…
Robert
  • 131
4
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1 answer

IEC958 (S/PDIF) not working

I can't get my IEC958 output working. The optical wire is physically connected to a powered 192KHz DAC via my sound card: ツ sudo lspci |grep -i audio 00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio…
user70382
3
votes
2 answers

Optical S/PDIF activate rear output

I'm trying to use the optical audio output of my motherboard to send the sound to my AV Receiver. I only see the front channels received by my AV. Indeed rear channels don't seem to be activated. How can I activate the rear channels ?
Pierre de LESPINAY
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3
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0 answers

How to set S/PDIF IEC958 to be default audio out via ALSA config file?

Brief: speaker-test -c 2 -D iec958:vc4hdmi1 works just fine, so I want to make it default/persist so speaker-test also works. I'm looking for a solution that doesn't involve pulseaudio. Details: SW: server Ubuntu 20.10 (GNU/Linux 5.8.0-1016-raspi…
Pavel
  • 31
3
votes
0 answers

No SPDIF output through sound card

I built a PC to serve as a home media center, and for sound opted for a asus xonar ae sound card. I tested it with the analog outputs and everything seemed fine. But when I tried to use s/pdif output the card simply refuses to produce any output (no…
pedroply
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3
votes
1 answer

Alsamixer S/PDIF Volume [00]

I am trying to get my digital output to work. In alsamixer my S/PDIF is on but no frame around and I can't regulate the volume. Is it maby not activated or is my digital input on and output of? Specs: Ubuntu 16.04 (Linux Mint) Asus Xonar DG…
c00L
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