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How to setup the audio output to 96KHz or 192Khz

  • 7 svar
  • 1 har dette problem
  • 57 visninger
  • Seneste svar af TyDraniu

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Hi! Chrome based browsers (like chromium or Vivaldi) permit to obtain 96KHz or even 192KHz float 32bit audio output. Firefox stuck at float32le 48KHz. This is not sufficient for me. i have a Linux LinuxMint 20 on a STRIX Z270G audio chip @ 96KHz and headsets like Sennheiser HD650 and GRADO RS1e so able to perfectly perceive the effects of harmonics up to frequency my chip can produce (96KHz band pass).

Question: Is possible in Firefox 78 for Linux to change the max frequency from 48KHz to 96KHz maintaining the float32le setup?

Thank you to all advices!


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Alle svar (7)

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Check out this bug, there's a discussion about this issue.

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I'll test them despite i'm on pulseaudio (i use ALSA too routed throug pulseaudio) I'll follow my experience here and on link you furnished me. Thank you.

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So, no way to have more than 48000 Hz. I read the link @TyDraniu kindly suggested but i didn't find any consisten especially for the pulseaudio configuration. This is my personal pulseaudio config file that override the default one and work perfectly for chromium based browsers:


  1. This file is part of PulseAudio.
  2. PulseAudio is free software; you can redistribute it and/or modify
  3. it under the terms of the GNU Lesser General Public License as published by
  4. the Free Software Foundation; either version 2 of the License, or
  5. (at your option) any later version.
  6. PulseAudio is distributed in the hope that it will be useful, but
  7. WITHOUT ANY WARRANTY; without even the implied warranty of
  9. General Public License for more details.
  10. You should have received a copy of the GNU Lesser General Public License
  11. along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
    1. Configuration file for the PulseAudio daemon. See pulse-daemon.conf(5) for
    2. more information. Default values are commented out. Use either ; or # for
    3. commenting.

daemonize = no

fail = yes
allow-module-loading = yes
allow-exit = yes
use-pid-file = yes
system-instance = no
local-server-type = user
enable-shm = yes
enable-memfd = yes
shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
lock-memory = no
cpu-limit = no

high-priority = yes nice-level = -11

realtime-scheduling = yes realtime-priority = 9

exit-idle-time = 20
scache-idle-time = 20
dl-search-path = (depends on architecture)
load-default-script-file = yes
default-script-file = /etc/pulse/default.pa
log-target = auto
log-level = notice
log-meta = no
log-time = no
log-backtrace = 0

resample-method = soxr-vhq

avoid-resampling = false

enable-remixing = yes remixing-use-all-sink-channels = yes enable-lfe-remixing = yes

lfe-crossover-freq = 0

flat-volumes = no

rlimit-fsize = -1
rlimit-data = -1
rlimit-stack = -1
rlimit-core = -1
rlimit-as = -1
rlimit-rss = -1
rlimit-nproc = -1
rlimit-nofile = 256
rlimit-memlock = -1
rlimit-locks = -1
rlimit-sigpending = -1
rlimit-msgqueue = -1
rlimit-nice = 31

rlimit-rtprio = 9

rlimit-rttime = 200000

default-sample-format = float32le default-sample-rate = 96000 alternate-sample-rate = 48000 default-sample-channels = 2 default-channel-map = front-left,front-right

default-fragments = 2 default-fragment-size-msec = 125

enable-deferred-volume = yes

deferred-volume-safety-margin-usec = 1

deferred-volume-extra-delay-usec = 0

Any idea where and what i can modify to test a good configuration that would go over the 48KHz limitation? This would be interesting for the people using pulseaudio & pulseeffects...

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To developers: Any tweak in about:config for this?

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Hi! First: Doing some digging i found this: https://developer.mozilla.org/en-US/docs/Web/API/AudioConfiguration

what if i try to test this code (please explain me how to do it since I'm not a developer anymore so if some brave can explain me how to do it would be very appreciated!) changing this line:

contentType : "audio/ogg", // valid content type in contentType : "audio/aac", // valid content type

and the subsequent parameters to match 96KHz float32le?

For simplicity i link here the AAC codec characteristics: https://developer.mozilla.org/en-US/docs/Web/Media/Formats/Audio_codecs#AAC

Second: In about:config i found this boolean paramenter:


Set = 0. What if i try to set it = 1?

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So, this is really incredible. This should be a support site for the best browser ever.

Result: Only one suggestion (thank you for that but old, really old one) And no other that can "support" me as the site said.

Not even a: "you can't go over 48KHz in FF" with no explanation on that!

Please: tell me who to contact directly. I can help too doing tests. Anyone can tell me the address/name(s) of the audio stack maintainer?

Ændret af davidemonge den

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Hi, this is a very specific question, so you can only file a new bug on bugzilla.