Fiio M3k

[Julian67]

I there any possibility that Rockbox core could ever support 24/32-bit audio?

Possibility?  Of course.  But it's not terribly likely at the moment; only a handful of the players have hardware that supports it, and need to implement in a way that doesn't bloat things for 16-bit-only players, and there's not exactly a lot of folks contributing code.  Or contributing much of anything, really.

I'm just asking because I have no idea:  Would a change from 16-bit to 24 or 32-bit be a huge upheaval?  Would it be impossible to do without dropping support for 16-bit players? Technical query, not a feature request!

[cereal_killer]

I've got few measurements for digital filters and DAC power mode illustrations.
Test signal is local file generated in REW software. 4kHz square signal, 192k sample rate, PCM24.

I am curious what the interpretation of these graphs is.

[speachy]

I'm just asking because I have no idea:  Would a change from 16-bit to 24 or 32-bit be a huge upheaval?  Would it be impossible to do without dropping support for 16-bit players? Technical query, not a feature request!

At minimum, we'd need to make the audio path variable-width at compile time, so 16-bit only devices don't incur any performance penalty.

A basic question is if we want to unconditionally use 24/32-bit audio on platform that support it, or switch back and forth at runtime.  Switching makes everything a lot more complicated, with multiple code paths and new APIs.

Meanwhile. Our DSP/EQ/effect engine doesn't support >16bit.  Additionally, we'd have to implement 16-24bit conversion for the various codecs/plugins that don't support >16bit audio (that said some of our targets only support 24/32-bit audio so that's already implemented, just not in a generic manner)

[Julian67]

I'm just asking because I have no idea:  Would a change from 16-bit to 24 or 32-bit be a huge upheaval?  Would it be impossible to do without dropping support for 16-bit players? Technical query, not a feature request!

At minimum....

Thank you for a really comprehensive answer.  Appreciated.

[mario69]

good morning, I have a problem, my fiio m3k player after two years of excellent functioning with rockbox, I get a message like this:panic -updating size on empty dir entry 4 (and also others Number) Simeone have a solution?thanks

[Richie325]

Hi All, can someone please repost Vortex's build here! I want to install it again and check a couple of things

[vitt13]

please repost Vortex's build here

I have only triple boot firmware with XVortex build, OF and native RB bootloader. It's outdated and can revert your latest RB bootloader version. To boot in XVrortex build just use Vol+ and Power.
https://www.mediafire.com/folder/8voqo1pdm6k3o/M3K_fw_XVortex_1.4.3_dualboot_native_rb
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Found his original build (*.fw) and extracted Rockbox build (taken from *.fw)
https://www.mediafire.com/folder/izr547zpatrcx/Vortex-Rockbox
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The theme from his build posted here https://forums.rockbox.org/index.php/topic,52917.msg248809.html#msg248809

[alex64]

Hello! In the DAC settings, there is save battery and sharp fiter. But it seems to discharge faster than on the official firmware. Is it possible to reduce the discharge somehow?

[amachronic]

I don't use the official firmware, so... I only have general advice. The DAC power setting has a marginal effect on battery life. I haven't measured it, but going by the datasheet it's roughly a 2 mA difference between "high" and "low" power. At any rate it's small enough to not be very noticeable. The backlight and button light can consume a lot of power, so you can try reducing the brightness.

The codec you use will also affect battery life. Eg. Opus is CPU-intensive and will consume more power, but lossless codecs can also do that because they keep the SD card busy more often.

You can check the debug menu to see how much power you're actually using: View HW info > Power stats. I_dchg is the battery discharge current.

[alex64]

Thank you for the answer.

[alex64]

In rockbox, the player charges very slowly. And when you turn on the charge numbers can jump. At first, for example 93, after a few seconds 76. Why is that?

[laxesandz]

I found one bug, however.  The left-right balance does not work for me. Volume in both headphones is turned down instead of just one side.

[Thew]

That's very odd as it works fine on mine. I've just checked and there's no problem. Actually I have two Rockboxed M3Ks and they both work as expected.

[SteveDave]

I found one bug, however.  The left-right balance does not work for me. Volume in both headphones is turned down instead of just one side.

That's very odd as it works fine on mine. I've just checked and there's no problem. Actually I have two Rockboxed M3Ks and they both work as expected.

May I ask what versions you guys are running?
Mine works ok but I haven't updated it since 2022 I think.
Ver: ab71b9e334-220428

[Thew]

May I ask what versions you guys are running?
Mine works ok but I haven't updated it since 2022 I think.
Ver: ab71b9e334-220428

I'm running:
ver. b309fae2bc-220317