Hi,
I am looking for a converter kit from HDMI to I2S. I will connect the HDMI out of my laptop to the input of HDMI to I2S converter and will get I2S signals. Then i will connect the I2S out to my TDA1541A dac and listen music. Anybody can recommend me such convertor kit? Any comment welcome.
Thanks
I am looking for a converter kit from HDMI to I2S. I will connect the HDMI out of my laptop to the input of HDMI to I2S converter and will get I2S signals. Then i will connect the I2S out to my TDA1541A dac and listen music. Anybody can recommend me such convertor kit? Any comment welcome.
Thanks
Ditto here.
Also looking for an HDMI + i2s so I can inject back into the stream. 🙂
Have not yet found a suitable solution. I've read about issues with DHCP.
Also looking for an HDMI + i2s so I can inject back into the stream. 🙂
Have not yet found a suitable solution. I've read about issues with DHCP.
I bought a usb to i2s kit from ebay but sound quality is not good like a cd player. I want to try HDMI to i2s.
Kitsune use this Audio-GD module as upgrade:
Audio-GD HDMi Input module Upgrade for M11/NOS11 | Kitsune HiFi - HoloAudio USA
响
I bought this from ebay:
AUDIO-GD DIY HDMI to I2S Input Module | eBay
It uses a Texas Instrument LVDS interface chip (serial number is unreadable -sanded-).
Audiophonics (in France) sell several LVDS interfaces:
Search - Audiophonics
Audio-GD HDMi Input module Upgrade for M11/NOS11 | Kitsune HiFi - HoloAudio USA
响
I bought this from ebay:
AUDIO-GD DIY HDMI to I2S Input Module | eBay
It uses a Texas Instrument LVDS interface chip (serial number is unreadable -sanded-).
Audiophonics (in France) sell several LVDS interfaces:
Search - Audiophonics
HDMI out from laptop (mixed video and audio) and "I2S over HDMI" are apples and oranges.
Many device use -proprietary- HDMI (LVDS - Low Voltage Differential Signaling -) protocol to transport -"long" distance sending- sensitive I2S signal to another device (I2S over HDMI), but it's not standard method.
Usually used USB (or Ethernet) input - several output (SPDIF, I2S over HDMI), like Singxer SU-1.
There are many reasons why the sound is poor and not necessarily connected to the usb/i2s interface. Do you prefer a computer source with an spdif/i2s connection?
Worth also mentioning that the different USB interfaces may sound dramatically different. Forget about the hdmi stuff.
To my knowledge there is no I2S signal in HDMI standard, so impossible to extract it.
Like mentioned before HDMI (cable) can be used to transport I2S, but this is not what you are probably looking for.
Maybe buy a Raspberry pi and use that as a streamer. Extract i2s from it.
Your question is not doable.
Either USB from your laptop og use another streaming method.
Your question is not doable.
Either USB from your laptop og use another streaming method.
Nice find but then he need an i2s(lvds) to normal i2s converter in his dac.
All rpi sounds the same I guess. Choose one with wireless
All rpi sounds the same I guess. Choose one with wireless
At the outset I consider it unfortunate that the original poster has asked for advice within a presumed solution
ie. that HDMI-to-I2S is likely to work better for them than USB-to-I2S.
Notwithstanding, let me make a few points about HDMI; if we ignore the special case of I2S-over-HDMI (via LVDS) - which is an uncommon feature associated with a limited range of high-end DAC's, HDMI is a proprietary method of multiplexing multiple video/audio/data streams, which are encoded to HDMI at the transmit end, and decoded at the receive end.
Can you separate out the I2S audio at the decoder? Of course. The Audiophonics board that ozcal mentioned is a good example, but there are many other products available on eBay - just do an eBay search for "HDMI audio extractor" and you will get hundreds of results.
But the "normal" I2S output is the 6pin JST connector.
So should the original poster go ahead and use such an HDMI-to-I2S extractor to feed their TDA1541A DAC? If the aim is high-fidelity audio playback (which the original poster never explicitly mentioned) - then NO !
HDMI is aimed mainly at video transmission. Audio is an add-on. The reference clocks for the majority of HDMI-equipped gear are chosen for suitability with video frame-rates and resolutions, and are often sub-optimal for audio. Audio from an HDMI decoder is high in jitter. You can Google this subject.
Let's go back to the first post - I believe a better question would have been;
I have a TDA1541A DAC and I have a laptop, what's the best solution for digital music playback?
Similar to what analog_sa said in the 9th post, my answer would be;
If you choose to use your laptop as music playback device, then you need a good USB-I2S interface - such as Amanero, or a (well-implemented) XMOS, or even an SA9227.
Then again, is your TDA1541A DAC worthy of such a digital transport upgrade?
It might be worth spending $100 to get yourself a good entry-level hifi USB DAC, instead, such as the Schiit Modi 3 or Topping D30.
Or if you choose to not use your laptop for music playback, and instead buy a separate digital audio player - by all means a Raspberry Pi with DAC-hat would be a good option.
ie. that HDMI-to-I2S is likely to work better for them than USB-to-I2S.
Notwithstanding, let me make a few points about HDMI; if we ignore the special case of I2S-over-HDMI (via LVDS) - which is an uncommon feature associated with a limited range of high-end DAC's, HDMI is a proprietary method of multiplexing multiple video/audio/data streams, which are encoded to HDMI at the transmit end, and decoded at the receive end.
Can you separate out the I2S audio at the decoder? Of course. The Audiophonics board that ozcal mentioned is a good example, but there are many other products available on eBay - just do an eBay search for "HDMI audio extractor" and you will get hundreds of results.
No no. Sure, the Audiophonics board does offer an I2S LVDS output - that's the HDMI connector next to the coaxial s/pdif connector.
But the "normal" I2S output is the 6pin JST connector.
No, it's the other way around; decoded audio from the HDMI chip is normal I2S, there's an LVDS transmitter chip to convert this to a higher level.
So should the original poster go ahead and use such an HDMI-to-I2S extractor to feed their TDA1541A DAC? If the aim is high-fidelity audio playback (which the original poster never explicitly mentioned) - then NO !
HDMI is aimed mainly at video transmission. Audio is an add-on. The reference clocks for the majority of HDMI-equipped gear are chosen for suitability with video frame-rates and resolutions, and are often sub-optimal for audio. Audio from an HDMI decoder is high in jitter. You can Google this subject.
Let's go back to the first post - I believe a better question would have been;
I have a TDA1541A DAC and I have a laptop, what's the best solution for digital music playback?
Similar to what analog_sa said in the 9th post, my answer would be;
If you choose to use your laptop as music playback device, then you need a good USB-I2S interface - such as Amanero, or a (well-implemented) XMOS, or even an SA9227.
Then again, is your TDA1541A DAC worthy of such a digital transport upgrade?
It might be worth spending $100 to get yourself a good entry-level hifi USB DAC, instead, such as the Schiit Modi 3 or Topping D30.
Or if you choose to not use your laptop for music playback, and instead buy a separate digital audio player - by all means a Raspberry Pi with DAC-hat would be a good option.
Would reclocking help in this matter?
A bit offtopic, but I'm looking for options to improve my TV STB audio. Could use SPDIF>I2S or HDMI extractor to get I2S signal and feed it to reclocking device and then DAC. This would probably work only on stereo audio channels, as DD or other multichannel audio are encoded.
Yes, most likely.
But there's one more element of the equation - the device which generates the HDMI signal is most often a video-related device, and in many cases it converts all audio sources to 48kHz, which is the video broadcast standard for audio samplerate. This is certainly the case with the Xiaomi MiBox 3, which I once used as a renderer for Spotify, by feeding its optical s/pdif into my DAC. My DAC display indicates that the incoming s/pdif from the MiBox is always 48kHz, although I know that most Spotify streams are 44.1kHz. So the MiBox is upsampling all audio to 48kHz, and it sounds quite dull and lifeless.
Now I have replaced the MiBox with a Chromecast Audio, which outputs s/pdif at the correct 44.1kHz samplerate, and it sounds so much better.
Apparently the situation is similar with Apple products - the AppleTV upsamples everything to 48kHz, but the AirPort Express maintains native samplerate.
Sorry to resurrect an almost year old thread but I have been trying to solve a similar problem with the board mentioned above. The OP did not elaborate on their situation but I am guessing it is similar to my goal.
Yes, there are easier ways to get digital audio out of a computer (USB or USB to S /PDIF converter). But if you are looking to play a SACD, DRM only allows DSD audio to pass through an HDMI (HDCP) encoded signal. Only AVRs are able to accept this signal. If you want an outboard DAC to get this DSD bitstream (remember, from a SACD disk, NOT a DSF file) then the only way to do it is to intercept the digital audio signal from the HDMI path.(or intercept it internally if the I2S bus is available.) This board separates the bitstream audio and can serve it up as I2S and outputs it to a number of connection choices. (I2S over HDMI or 6-pin bus).
I’d like to know if this board worked because I would like to capture the DSD bitstream from my universal Blu-Ray disk player so I can play my SACDs and utilize a higher quality outboard DAC that decides native DSD.
Yes, there are easier ways to get digital audio out of a computer (USB or USB to S /PDIF converter). But if you are looking to play a SACD, DRM only allows DSD audio to pass through an HDMI (HDCP) encoded signal. Only AVRs are able to accept this signal. If you want an outboard DAC to get this DSD bitstream (remember, from a SACD disk, NOT a DSF file) then the only way to do it is to intercept the digital audio signal from the HDMI path.(or intercept it internally if the I2S bus is available.) This board separates the bitstream audio and can serve it up as I2S and outputs it to a number of connection choices. (I2S over HDMI or 6-pin bus).
I’d like to know if this board worked because I would like to capture the DSD bitstream from my universal Blu-Ray disk player so I can play my SACDs and utilize a higher quality outboard DAC that decides native DSD.
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