iecset
Set or dump IEC958 (S/PDIF) status bits on ALSA devices
TLDR
Show current IEC958 status
$ iecset
Dump status as AES bytes$ iecset -x
Set professional mode$ iecset pro on
Set audio mode$ iecset audio on
Set sample rate$ iecset rate [48000]
Use a specific sound card$ iecset -c [1]
Read commands from stdin$ iecset -i
SYNOPSIS
iecset [options] [commands]
DESCRIPTION
iecset sets or dumps IEC958 (S/PDIF) status bits on ALSA devices. When started without commands, it shows the current IEC958 status in a human-readable form.The tool controls professional/consumer mode, sample rates, emphasis, and other S/PDIF parameters for digital audio output.
PARAMETERS
pro on|off
Professional mode (true) or consumer mode (false).audio on|off
Audio mode (true) or non-audio mode (false).rate RATE
Sample rate in Hz.emphasis 0|1|2
Emphasis: 0 = none, 1 = 50/15us, 2 = CCITT.copyright on|off
Copyright flag (consumer mode only).category VALUE
Category code 0-0x7f (consumer mode only).lock on|off
Rate lock (professional mode only).sbits VALUE
Sample bits: 2 = 20bit, 4 = 24bit, 6 = undefined (professional mode only).-c CARD
Sound card index number.-D DEVICE
Device name.-n INDEX
IEC958 control element index for multiple IEC958 devices.-x
Dump status in AESx byte format.-i
Read command sequences from stdin.
INSTALL
sudo apt install alsa-utils
sudo dnf install alsa-utils
sudo pacman -S alsa-utils
sudo apk add alsa-utils
sudo zypper install alsa-utils
nix profile install nixpkgs#alsa-utils
CAVEATS
Part of alsa-utils. Device must support IEC958. Settings may reset.
HISTORY
iecset is part of ALSA utilities for Linux digital audio configuration.
