Resist Fingerprinting
How to tell if you have Resist Fingerprinting enabled, and if so, disable it
_https://support.mozilla.org/en-US/kb/resist-fingerprinting

To disable Resist Fingerprinting:

    Type about:config in the address bar and press Enter.
    A warning page may appear. Click Accept the Risk and Continue to go to the about:config page.
    In the search bar at the top, search for privacy.resistFingerprinting.
    A number of preferences will appear but see if either privacy.resistFingerprinting or privacy.resistFingerprinting.pbMode have a value of true.
    To tell if an extension is controlling this preference, you can click toggle the value back to false and restart your browser. After restarting, visit about:config again, and see if the value has been returned to true.

If it has been, you will need to determine which of your extensions is controlling the preference and disable or remove them. One way to do this is to disable the installed extensions one by one, and restart the browser, seeing if the preference is changed upon restarting Firefox. Please be aware that, in rare cases, multiple extensions might be setting the preference.

Resisting Fingerprinting: By returning a standard sample rate of 44100 Hz when aShouldResistFingerprinting is true, the function PreferredSampleRate helps maintain user privacy.

Fingerprinting: In the context of web technologies, fingerprinting refers to the technique of tracking users based on their device and browser characteristics. The aShouldResistFingerprinting parameter suggests a consideration for privacy in audio playback decisions.

$ cat firefox/dom/media/CubebUtils.cpp | grep PreferredSampleRate\(bool -A14
uint32_t PreferredSampleRate(bool aShouldResistFingerprinting) {
  StaticMutexAutoLock lock(sMutex);
  if (sCubebForcedSampleRate) {
    return sCubebForcedSampleRate;
  }
  if (aShouldResistFingerprinting) {
    return 44100;
  }
  if (!InitPreferredSampleRate()) {
    return 44100;
  }
  MOZ_ASSERT(sPreferredSampleRate);
  return sPreferredSampleRate;
}

$ cat firefox/dom/media/VideoUtils.cpp | grep kSampleRate -A27
uint32_t DecideAudioPlaybackSampleRate(const AudioInfo& aInfo,
                                       bool aShouldResistFingerprinting) {
  bool resampling = StaticPrefs::media_resampling_enabled();

  uint32_t rate = 0;

  if (resampling) {
    rate = 48000;
  } else if (aInfo.mRate >= 44100) {
    // The original rate is of good quality and we want to minimize unecessary
    // resampling, so we let cubeb decide how to resample (if needed). Cap to
    // 384kHz for good measure.
    rate = std::min<unsigned>(aInfo.mRate, 384000u);
  } else {
    // We will resample all data to match cubeb's preferred sampling rate.
    rate = CubebUtils::PreferredSampleRate(aShouldResistFingerprinting);
    if (rate > 768000) {
      // bogus rate, fall back to something else;
      rate = 48000;
    }
  }
  MOZ_DIAGNOSTIC_ASSERT(rate, "output rate can't be 0.");
    
  return rate;
}

Best Audiophile Vocal 24 bit - Hi-Res Music 2025 - Audiophile Voices
_https://youtu.be/uO6jfQ5tQHM
Absolute High Resolution Audio Test 32bit Floating Point
_https://youtu.be/v5swkCSvryE
Hi-Res audio 32 bit floating point. Drums, acoustic guitar, bass guitar, trumpet, sax, violin
_https://youtu.be/YIHN0XUK2i8

1. It is not difficult to disable resampling in Firefox.
2. Firefox is easy to compile.