Firmware and drivers for HXMelody?
Can someone give advice on software support with these chinese brands? Do they write their own firmware and drivers (which could mean dodgy support for the long run), or do they use generic support with stuff written by the original manufacturers?
Can someone give advice on software support with these chinese brands? Do they write their own firmware and drivers (which could mean dodgy support for the long run), or do they use generic support with stuff written by the original manufacturers?
Its not an EQ thing, FR looks flat in virtually all modern dacs. People who work with dacs have some ideas about dacs in relation to perceived bass and or perceived brightness, but there is no peer reviewed published research on it otherwise you would already know all about it.
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The link was to a russian site, but if you search HXMelody, you are directed to a chinese site.
What doesn't come from China these days....
What doesn't come from China these days....
Money. Also hoping for a smaller DIY board I can use together with something like the ADSP-SC573 and put everything into the case of my Img STA-2000D
Distortion. The Eval board measurements show significant LF distortion. Exactly which available DAC products have addressed this I have no idea.
TCD
I'm not sure Scott, I was certainly scratching my head after viewing eval
board data sheet. But have seen other implementations that didn't have it.
TCD
The AK4499EQ utilizes the cheap modern high distortion delta-sigma modulation method. The abundant quantization error noise and high frequency harmonic transients generated cannot be brushed under the rug and will impact the audible range.
The electrical characteristics of CMOS devices are horrible for the task of processing audio signals.
Op-amps are ill-suited for I/V conversion and filtering. Why use crappy op-amps in nonindustrial artisanal approaches at all?
Any attempt at analysing such a strongly nonlinear abstruse system is simply ridiculous. I love the hypocrisy, spiritualism and wishful thinking in audio.
The electrical characteristics of CMOS devices are horrible for the task of processing audio signals.
Op-amps are ill-suited for I/V conversion and filtering. Why use crappy op-amps in nonindustrial artisanal approaches at all?
Any attempt at analysing such a strongly nonlinear abstruse system is simply ridiculous. I love the hypocrisy, spiritualism and wishful thinking in audio.
As far as I/V conversion is concerned. Nelson Pass designed a beautifully simple discrete solution a long time ago (for his once and only DAC). Why don't people use something similar?
I might print and frame this post for everytime I need a laugh. Contains the highest density of audiofool BS in a few sentances I have seen for a while.
Because the OP Z of the 4499 is so low and the current swing so high, these
grounded base / source, open loop I-V's will produce a huge amount of
distortion.
It is possible to do but to keep the distortion down to a reasonable amount
requires really large quiescent current running through the IP device.
TCD
I wonder if anyone have been measured the out-of-band noise and harmonics (up until 1-2 MHz range) of AK4499, especially when the input signal is DSD and the AK4499 is used in direct DSD mode.
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The Zen I/V may not be up to the current requirements, but an adaptation of the D1 I/V stage was using IRF610 mosfets if I recall correctly and should be easily adapted to handle the current swing. It had noise floor lower than -120dB.
Cheers,
Terry
Cheers,
Terry