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标题: RME ADI-2 DAC FS固件更新到V35 [打印本页]

作者: alexiyan 时间: 2021-4-9 14:05
标题: RME ADI-2 DAC FS固件更新到V35
官网下载，一键更新！

作者: 白塔花园 时间: 2021-4-9 20:25
这次更新补齐了1Hz—200Hz低频jitter滤波，低频音质得到极大改善，管风琴极低频无比清晰了。

作者: walkere 时间: 2021-4-10 01:10
牛逼了，更新后觉得adi2 dac fs有了新的生命

作者: alexiyan 时间: 2021-4-10 08:21
Topic: Firmware Updates ADI-2 Pro 250 / 102 and DAC 35 / 35
As already mentioned in this forum the current state for developers and manufacturers is a mixture of hopeless and catastrophy. We face and fight with Corona, a global chip crisis, a never seen before component allocation (translation – unexpectedly cancelled shipments), AKM’s missing chips due to their manufacturing plant burning down, and some more. This all blocks a big amount of time and resources. Consequently the planned firmware updates for Pro and DAC with many improvements and new features are much delayed.
A few days ago we released firmware 249 for the Pro series (and 35 for the DAC series), which bring a completely overhauled SteadyClock. Today we release version 250 (FPGA) and 102 (DSP) for the ADI-2 Pro series, and 35 (DSP) for the ADI-2 DAC. Once working on the firmware we couldn’t hold back and added at least a few, easy to change points from our long list of upcoming stuff.
But let me start with the topic SteadyClock again. If one measures its jitter attenuation over frequency the attenuation will be high at higher jitter frequencies (1 kHz and up), and  lower at frequencies below 200 Hz. The reason is that one needs to follow the incoming clock, and if that one varies slowly or a bit quicker (intentional detuning, varipitch) you don't want to loose sync. But that would happen when the PLL filter – which also defines the jitter attenuation - does not let through such slow changes.
In version 249 (and 35 for the DAC) we finished what we had begun in version 238 (and 34). In those versions the jitter attenuation was 4 x times higher than before, but the PLL a bit unstable in the low frequency area. This is now resolved by adding a special, multiple filter stage of up to 65k samples (1k before, which indeed means 64 times higher filtering), and dynamically switched reaction times on frequency changes. As a result the new SteadyClock acts exactly like before, locks and syncs very quickly, and is able to follow varipitch sample rate changes with no or minimal sync loss. Testing this in detail you won’t find a difference to before. Which is good, as SteadyClock was absolutely unique and simply perfect in this regard.
Now on top of that jitter attenuation has a corner frequency of around 1 Hz, instead of 200 Hz before. That means more than 50 dB jitter reduction also at 50 Hz and similar real-world jitter frequencies (power lines, magnetic fields etc.). Absolutely top-notch for any kind of incoming clock signal. This improvement is added to all Pro models, even the non-FS ones, and all DAC models. Illustrating measurements will be released later.
Furthermore the firmware updates add these features/changes:
Sample Rate Converter (SRC) improvements (all Pro models)
The ISP (Intersample Peak) headroom for the SRC has been reduced from 6 dB to 3 dB. This improves low level accuracy and SNR, and improves low level THD. 6 dB was not necessary (plus  the Pro FS R BE already has 2.5 dB digital headroom).
So far this SRC ISP headroom was available for the analog outputs by turning down the output volume below 0 dB (level meters would clearly show Overs, so dialing volume back in such a case is intuitive and logical. ADI-2 Pro FS R BE and ADI-2 DAC V2 have 2.5 dB additional DAC headroom, so are mostly not affected even at a 0 dB volume setting).
But what about the digital paths, USB Record of the SPDIF/AES input signal and the SPDIF/AES pass-through in Basic Mode Dig Thru? Here the SRC signal clips at the maximum digital signal level, so the additional headroom during SRC conversion is lost again. The new option SRC Gain dig in SETUP / SPDIF / Remap Keys maintains the SRC ISP headroom also for these digital paths (SPDIF/AES In – SRC – USB Record and SPDIF/AES In – SRC – SPDIF/AES Out). Setting this option to -3 dB both digital paths will show -3 dBFS for a full scale sine. And undistorted 0 dBFS if one plays a +3 dBFS test tone through the SRC.
Level meter improvements (ADI-2 Pro FS R BE and ADI-2 DAC V2)
The level meter of  Analog Out 1/2 XLR and TRS rear, as well as the IEM out of the ADI-2 DAC V2, now shows OVR at output levels higher than +2.5 dBFS (before at 0 dBFS). This equals the real overload situation, as these outputs have a digital headroom of +2.5 dB (as mentioned in the manual VOLUME can be upped to +2.5 dB without clipping).
The level meter of Phones Out 1/2 and 3/4 now show OVR at output levels higher than +1 dBFS (before at 0 dBFS). This equals the real overload situation, as these are limited by the analog hardware stages to such a headroom.
Setup Load improvement (all ADI-2 DAC)
Loading a setup does not affect the current sample rate anymore. This feature made sense in the Pro, but not in the DAC, and has therefore been removed.
That’s it. We hope the next big firmware update won’t take too long anymore.

作者: hjf310 时间: 2021-4-10 08:34
pro已更

作者: 白塔花园 时间: 2021-4-10 09:40

四环一郎发表于 2021-4-9 21:51
白塔你用的83X1系列，显然没有我模拟系统感受明显...！！！

我有低音炮哦，越是超低频感受到的提升越明显哦

作者: 白塔花园 时间: 2021-4-10 10:59

四环一郎发表于 2021-4-10 10:51
忘记你买了W371......

W371米不动，是两只7360

作者: ivanking 时间: 2021-4-11 11:00
已升级，这个相当不错。

作者: walkere 时间: 2021-4-11 23:00

四环一郎发表于 2021-4-10 09:40
买专业大厂的产品就这点好，用户不会轻易被抛弃......一个产品定型多则20年少则5年以上才换代，即使直到 ...

呵呵，v34我基本也紧跟着更新的，但区别没有v35这么大

作者: walkere 时间: 2021-4-12 20:41

四环一郎发表于 2021-4-12 18:15
是的，我也感觉这次固件升级很特殊，是否因为AKM无法继续供应芯片，造成RME这种厂家在机器研制上出现困难 ...

如6楼所说
Now on top of that jitter attenuation has a corner frequency of around 1 Hz, instead of 200 Hz before. That means more than 50 dB jitter reduction also at 50 Hz and similar real-world jitter frequencies (power lines, magnetic fields etc.)
v35更像是对严重缺陷的修补，1hz的数据如何是没有人在意的，而200hz就很致命

作者: 战斗天使 时间: 2021-4-14 00:07
这次升级带来的效果比较意外，也提升了这个产品的完成度

作者: allenwt 时间: 2021-4-14 17:19
刚刚升级了，谢谢提醒

作者: 晓风朔月 时间: 2021-4-14 20:30
https://www.rme-audio.de/downloads.html 请选择Flash更新选项

作者: 小玩童 时间: 2021-4-15 14:47
解码同价位同国产比咋样？

作者: 小玩童 时间: 2021-4-15 22:10

四环一郎发表于 2021-4-15 20:03
同价位......？？？？

一万以内的呗，想入解码，有点混乱啊

作者: dancker 时间: 2021-4-27 08:27
听说RME ADI-3快要出来了，有人知道最新的消息吗？

作者: 战斗天使 时间: 2021-4-28 00:18

dancker 发表于 2021-4-27 08:27
听说RME ADI-3快要出来了，有人知道最新的消息吗？

ADI-192在售

作者: 8208866 时间: 2021-4-28 20:21
本帖最后由 8208866 于 2021-4-28 20:22 编辑

已升级了，觉得低频感受比V34更好了，提升的很明显

作者: 战斗天使 时间: 2021-4-28 22:50

8208866 发表于 2021-4-28 20:21
已升级了，觉得低频感受比V34更好了，提升的很明显

用户群里不少人这么说

作者: d2b00 时间: 2021-6-7 17:48
等adi3了，目前入2感觉有点49入国军的味道

作者: 偷钱大王 时间: 2021-7-12 07:42

战斗天使发表于 2021-4-28 22:50
用户群里不少人这么说

怎么进群？？

作者: 战斗天使 时间: 2021-7-13 01:52

偷钱大王发表于 2021-7-12 07:42
怎么进群？？

直接加群啊，搜RME ADI-2

作者: 战斗天使 时间: 2021-7-13 01:54

d2b00 发表于 2021-6-7 17:48
等adi3了，目前入2感觉有点49入国军的味道

adi-192都出很久了你知道不

作者: zhxmxm 时间: 2021-9-2 23:11
同问怎么进群？

作者: alexiyan 时间: 2021-9-3 06:41

zhxmxm 发表于 2021-9-2 23:11
同问怎么进群？

1125302805群号

作者: starfisher 时间: 2021-9-8 11:43
昨天官网又更新固件了，现在是V.41

作者: because3000 时间: 2021-9-8 12:38
看升级内容应该没什么，主要2点：1、针对ESS芯片设备的第一次升级。2、针对现有DAC，增加了一路USB信号返回，主要是针对USB录音时如果无法锁定输入码率，将会静音，同时会在屏幕上显示的码率用红色表示当前状态。

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