Tidal Firmware Update?

Does anyone know what the current status of the (delayed?) Tidal firmware update is?

Has it gone back to beta testing? Can the beta testers reveal anything yet?

As a lover of Tidal (and the new artists it has opened my eyes to), I would very much appreciate a further uplift in SQ that the anticipated update promises to provide.

Original Post
Ardbeg10y posted:
Dozey posted:

I am considering getting a Sonos connect to feed my NDS for tidal.

Why not using a ChromeCast Audio? Digital == Digital ... As long as you use the optical connection.

Why you need sonos or chrome cast for Tidal in NDS? 

Perhaps not an ideal solution, but Naim have welcomed many forum members to the Beta program...which has a focus on Tidal streaming and sound performance at the moment.

So if your Tidal experience is poor and you are willing to try out firmware that is not yet up to general release level (but certainly works and sometimes has features Naim are still trying out), then I recommend that you send a note to Naim service and ask to be admitted. There is a lull in test candidate evaluation at the moment perhaps due to summer and perhaps due to the "non testable" builds being evaluated in-house at Naim headquarters...but joining the Beta Test Program would allow you to see whether the fixes incorporated to date are an improvement for you, which is also valuable input to the Naim software team. Just an idea for those whose patience is wearing thin after these many months of solution development with no new production code released. 

Regards alan

hi guys

the R&D team poked me to say that update required, and being very honest, i thought i had updated you at same time as i updated the beta team a few weeks back, but obviously this didnt get posted. sorry for that.

status is that after alot of listening to alot of variants of different products, we are currently not satisfied that the sound meets the standards we expect, so the situation at present is that its back with R&D and a new internal release is expected this week, to re-review where we are.

once again, i apologise for the apparent missing post, not sure if i forgot to press "post reply" or it got lost in a wifi connectivity issue when travelling. will be in touch

Trevor

update as a nice member of beta forum poked me over a typo!

Dozey posted:

Because of drop outs. Using Sonos there are no drop outs.

The Sonos is ok, but as we know Digital is not the same across all transports  and the lack of precision in the Sonos transport clock does let the side down, but it is certainly better than nothing or where a Naim streamer might be currently unusable in your setup.

Dozey posted:

Because of drop outs. Using Sonos there are no drop outs.

So we buy a 7k£ streamer with tidal and had to add sonos because the 7k streamer is not delivering what is advertasing! You should send the sonos invoice to Naim! You should get a can of gas and call the press, burn the NDS in front of Naim building

Nooo that can't be true. You just killed my dream ...

charlesphoto posted:

Or you get a Sonore microRendu with a decent power supply, use the Lumin or Kazoo app for Tidal, and blow away the NDX in sound quality for a 1/7th of the price. Plenty of options out there....

Nooo that can't be true! you just killed my dream ...

charlesphoto posted:

Or you get a Sonore microRendu with a decent power supply, use the Lumin or Kazoo app for Tidal, and blow away the NDX in sound quality for a 1/7th of the price. Plenty of options out there....

another option being Tidal via Audirvana+ on a Mac Mini

with Damien working to improve your sound quality for free 

Trevor

Thanks for the (belated) update. Although it is somewhat disappointing to find the FW update is still not ready, I commend Naim for having the resilience to stall the release on the basis that SQ is not good enough. We would all be even more disappointed if the FW were launched with no appreciable difference in SQ.

So I fully support the R&D team in continuing their quest for a FW update that will deliver the best (well optimal) SQ.

Good luck chaps, but please don't leave us hanging for 8 months this time.

KRM posted:

...or you get the Naim R&D team working to improve your streamer for free.

Keith

There is a difference " improving my streamer for free " and fixing something which is not working....  If the Naim is trying to improve the SQ for us i respect that, but in the case mentioned above adding a SONOS is not for SQ at all because of the drops that makes the streamer's Tidal function unusable.  

Imagine you buy a TV and every 30 second it becomes black for an half second.... will you wait for Sony/LG to improve your TV for free or return it because it is not WORKING!  

If someone bought a Naim streamer after the TIDAL integration have all the right to rebel, ones who bought it before maybe less because it was a " free " improvement form Naim but not free from Tidal anyway... still 19,99 per month...

This is my situation also. The NDS was bought to play pack CD and higher resolution files stored on a NAS on our home network. A job that it does brilliantly. Not remotely interested in subscription based streaming. Sounds like a waste of a good NDS (in this house).

But others have different needs. If the NDS was bought with this capability and is failing it should go back, like any other hardware item which doesn't work properly (I've sent a Corsair keyboard back to Amazon today. Irritating but routine procedure for faulty hardware).

If it was bought in the expectation that such a feature WILL be made available I have zero understanding. Unless the purchaser was deliberately misled. It's unfortunate that the feature was released buggy but Naim will fix it.  Get your money back if the equipment was sold with the feature. 

I bought my NDS pre Tidal but I have very much enjoyed Tidal as an additional music source, discovering some wonderful new music and some wonderful new artists. It was however very frustrating when I was experiencing drop outs and that kind of failure is unacceptable. These days drop outs are rare and I am more interested in optimising the SQ available from Tidal - hence my interest in the progress of the FW update.

Tidal however is a secondary source of music for me, but I use it for more than just 'discovery'. Having said this, for me the primary function of the NDS has been, and will always be, the replay of ripped CDs and hi res downloads. It seems weird that anyone would buy such an expensive streamer to primarily play music from a subscription service. Surely not?

If you pay £19.99 (or foreign currency equivalent) per month for Tidal and you are still suffering drop outs then this is unacceptable. But who do you blame, your ISP, t'internet, Tidal, Naim, your own LAN installation? There is or course no guarantee that the much anticipated FW update will fix the drop out issue. We will have to wait and see. 

In theory Tidal hifi should be same/similar to cd rips, this is why we are paying the double of standart subscription, and there is no shame for a expensive 16/44 source, remember cd555?

I like tidal very much for discovery and mix taping, wife music

Absolutely - there are three differences I have measured which seem to affect SQ between Tidal streaming of FLAC and home streaming of WAV.

1) Tidal sends FLAC media - most with Naim stream WAV media - because they hear a difference on their equipment between rendering from FLAC and rendering from WAV.

2) The inter timing variation between media packets seems to affect the SQ on Naim streamers (measured and assessed on an NDX with various firmwares). I have found the inter timing variation from Tidal can vary significantly resulting in differing SQ. Home streaming is often (in my experience) more consistent  here on inter frame / packet timing - albeit not perfect - but  can vary on real time transcoding and the loading on the NAS/media server etc.

3) The Naim streamer seems to work optimally when the TCP stack on the streamer works in a specific mode - determined by the end to end TCP throughput - resulting in the use of zero window size flow control. However with Tidal the throughput can vary and when the throughput is of a level where a more dynamic window exchange occurs between the Naim streamer and Tidal media server - SQ seems to fall off slightly.

 

Simon

 

 

yes in theory - but I have tended to notice it more from track to track or even album to album - as they can often be sourced from different IP addresses and servers. I have also noticed it changing at different times of the day sometimes.

With respect to point 2) I have done some 'controlled' measurements using home streaming equipment and servers - and I see these characteristics repeated with Tidal but exaggerated.

I am coming around to the idea that this might explain in part the SQ the differences between differing streaming transport equipment - as any impact to SQ can  to my mind only be produced by processing noise generated by the streamer... kind of like the difference between FLAC and WAV decode.

If you think about it it starts to become more obvious as USB and Ethernet involves a fairly complex digital electronics state  machine and the switching/modulation of transmission lines - both renown for producing electrical noise... not what you ideally want next to sensitive analogue circuitry.. or precision clocks.

Why is it strange? Must admit never come across a SQ issue on Tidal.. but used to get dropouts occasionally.. But dropouts hugely improved I think for most in the forthcomg firmware.

Remember given my above provisos in the above posts as far as your NDS is concerned there is no difference between Internet streaming and local streaming .. it's the same FLAC media assuming you locally stream FLAC ... and the masters are the same. 

Simon

I've never been that great at articulating what I hear in words but somehow the Tidal streaming doesn't sound as good to me as local streaming. Maybe it's the content and honestly I just setup Tidal yesterday so not much listening via the NDS. But local streaming sounds better to my ears. There's a missing ambience to the Tidal sound. It's smaller and shut-in compared to the music coming from my NAS.

I actually prefer Europaradio (1,000 Kbps Lossless Uncompressed FLAC) on vTuner over Tidal. I have no issues with dropouts with either.

I didn't buy an NDS for Tidal or any other streaming service because I've never expected much from them. In my car with a Mark Levinson stereo, I find satellite radio unlistenable.

This is sort of like upsampling to me. How can you take something and make it look or sound better than the original by "filling in" the gaps? This is artificial and I don't particularly like it. I think Naim is trying to satisfy the demand and be competitive since other companies are offering it but I think it's great that Naim will only release an update once they are satisfied with the sq - it's one of the reasons I stay with Naim.

Arun

Belated thanks to Trevor for the update.  A question for the technical team:

If I'm not mistaken the emphasis now seems to be on sound quality, whereas originally it was both on drop outs and SQ.  Could there be a solution where a drop outs solution is released while the SQ development is ongoing?  I appreciate any SQ improvement will be appreciated by all Tidal users, but a drop out solution would at least make Tidal useable for those of us who still have issues.

Granted, I bought my NDX for streaming my own ripped content - but I HAVE been paying £20 pm for Tidal for 8 months in anticipation that the solution is imminent.  The problems are variable, but significant.  Yesterday managed 15 mins before first dropout.  Tonight, 5 seconds.  FYI I've spoken separately to Tidal and implemented all of their network config recommendations.

M

Arun Mehan posted:

I've never been that great at articulating what I hear in words but somehow the Tidal streaming doesn't sound as good to me as local streaming. Maybe it's the content and honestly I just setup Tidal yesterday so not much listening via the NDS. But local streaming sounds better to my ears. There's a missing ambience to the Tidal sound. It's smaller and shut-in compared to the music coming from my NAS.

I actually prefer Europaradio (1,000 Kbps Lossless Uncompressed FLAC) on vTuner over Tidal. I have no issues with dropouts with either.

I didn't buy an NDS for Tidal or any other streaming service because I've never expected much from them. In my car with a Mark Levinson stereo, I find satellite radio unlistenable.

This is sort of like upsampling to me. How can you take something and make it look or sound better than the original by "filling in" the gaps? This is artificial and I don't particularly like it. I think Naim is trying to satisfy the demand and be competitive since other companies are offering it but I think it's great that Naim will only release an update once they are satisfied with the sq - it's one of the reasons I stay with Naim.

Arun

Arun, can you explain how you set up the Europaradio 1000 on vTuner?

AndyL posted:
charlesphoto posted:

Or you get a Sonore microRendu with a decent power supply, use the Lumin or Kazoo app for Tidal, and blow away the NDX in sound quality for a 1/7th of the price. Plenty of options out there....

another option being Tidal via Audirvana+ on a Mac Mini

with Damien working to improve your sound quality for free 

Which sounds excellent and damned close to local files although I'm sure it will on Naim gear at some point too 

I think we need to be clear about what we are expecting from the FW update and what issues we are having with Tidal, which I would suggest fall into 2 categories: Dropouts and SQ.

I no longer suffer with dropouts but would also welcome improved SQ as I listen to Tidal quite a bit these days. The immediate problem must however be the dropout issues that some still appear to be suffering with. So the question is, does the new FW update address the dropout issue or SQ or both? A secondary question is, if the answer is both, then is one fix delaying the issue of the FW update?

I know the beta testing team might not be able to answer, but Trevor, can you tell us what the situation is? It's been a very, very long time coming.

Who knows, we may all be back to spinning silver (or even black) discs by the time the new FW update is launched! 

Richard Morris posted:
Arun Mehan posted:

I've never been that great at articulating what I hear in words but somehow the Tidal streaming doesn't sound as good to me as local streaming. Maybe it's the content and honestly I just setup Tidal yesterday so not much listening via the NDS. But local streaming sounds better to my ears. There's a missing ambience to the Tidal sound. It's smaller and shut-in compared to the music coming from my NAS.

I actually prefer Europaradio (1,000 Kbps Lossless Uncompressed FLAC) on vTuner over Tidal. I have no issues with dropouts with either.

I didn't buy an NDS for Tidal or any other streaming service because I've never expected much from them. In my car with a Mark Levinson stereo, I find satellite radio unlistenable.

This is sort of like upsampling to me. How can you take something and make it look or sound better than the original by "filling in" the gaps? This is artificial and I don't particularly like it. I think Naim is trying to satisfy the demand and be competitive since other companies are offering it but I think it's great that Naim will only release an update once they are satisfied with the sq - it's one of the reasons I stay with Naim.

Arun

Arun, can you explain how you set up the Europaradio 1000 on vTuner?

Hello Richard,

I believe it's been posted before on the forum but if you email me (see my profile), I can provide you instructions.

Arun

Arun send me the instructions, which are as detailed here once you have logged in.

The stream for Europajazz 1000 is http://www.europaradiojazz.org/stream.flac.m3u

As Arun advised I set the media type to Windows Media.

However the station (and others I have added) is not showing up on the naim iPhone app. I can Airplay from the website to a Mu-so, of course.

Once added the screen then says:

'Your added station EJ will appear on your Naim Uniti after it is next updated. You may update your Naim Uniti immediately by following the Manual Update instructions that came with your Naim Uniti.'

I wonder if this message is out of date (the website is rudimentary) or this only works with a Uniti? 

 

Added the station via Naim.vtuner.com (didn't know you could do that!) and found it in the added stations folder in the Naim app.

Unfortunately, despite specifying windows media stream at 1000kbps when adding it and double checking the stream address, it shows up as 320kbps AAC when playing on my 172. So can't make any comparisons with other streaming sources.

Just listening to Tidal HiFi at work and all of a sudden it stopped and started buffering which got me thinking... I wonder how man Tidal issues are related to sub-optimal networks or internet connections?  I use Tidal on my PC at work and do occasionally experience dropouts or buffering issues but do share the network with 19 other people and we do have the odd issue.  Whereas i've never had any issues at home where I stream Tidal Hifi through my NDX.  Maybe the firmware isn't to blame?  

Hi most of the Tidal issues have been down to duplex latency ... That is round trip time between the streamer , Tidal media server and streamer again . This can vary under load from the Tidal (or any server) as well load on the network route. The current firmwares are quite sensitive to this, however the firmwares that are in development for the streamers are more tolerant to latency here... and dropouts will be significantly improved.

This issue is not directly related to network bandwidth other than in extreme scenarios of congestion. RTD (round trip delay) is a normal TCP/IP network characteristic, and in short the clients need to be able to tolerate it over the typical operating environment with the supported applications. Typically you can mitigate RTD by having larger TCP window segmentation memory and/or well as having larger amounts of application buffer memory and/or improving the speed and efficiency of the client TCP/IP state machine responsiveness of the client.. I believe Naim ate focussing on the latter. The two former options tend to increase application delay and latency.

Simon

Dave***t posted:

Added the station via Naim.vtuner.com (didn't know you could do that!) and found it in the added stations folder in the Naim app.

Unfortunately, despite specifying windows media stream at 1000kbps when adding it and double checking the stream address, it shows up as 320kbps AAC when playing on my 172. So can't make any comparisons with other streaming sources.

Thanks to Richard for posting the instructions.

That's interesting  Is there a limitation in the 172 compared to the dedicated streamers? How does it sound to you?

I do hope Naim can improve the sq with Tidal (and other streaming services) but I have enough music to keep me occupied. Radio Paradise at 320 is enough to introduce me to new music let alone my friends who keep introducing me to new stuff all the time.

Arun

To those that say the firmware update is about nice to have add ons, I beg to differ. I have most of my hi-res stuff ripped to ALAC and as the last FW update was nearly a year ago I've effectively been living with a faulty SuperUniti for all that time, as I get the irritating loud snap/click between most tracks. I'm amazed its taking so long to rectify this.

Nice work Naim on the new gear - no doubt good for the business and for new customers.  

However, not convinced that blurb about  'much better internal buffer and memory' resulting in 'far fewer dropouts' bodes well for existing Tidal subscribers with constant dropouts using existing kit.  I think it's time to ask to be a Beta tester in the hope the firmware might fix the dropouts, or give up on Tidal altogether.

I have not suffered too much in recent months with drop outs but this afternoon Tidal was unlistenable. I realise that this is probably due to an overloaded or stressed out Tidal server somewhere in the world and not necessarily the sort of thing that the long-awaited firmware update can sort.

However, now the New Uniti range had been launched, any chance of an update on what is happening (if anything) with the firmware update? Trevor? I listen a lot to Tidal so this matters to me, especially if the update reduces drop outs and enhances SQ.

Simon-in-Suffolk posted:

Hi most of the Tidal issues have been down to duplex latency ... That is round trip time between the streamer , Tidal media server and streamer again . This can vary under load from the Tidal (or any server) as well load on the network route. The current firmwares are quite sensitive to this, however the firmwares that are in development for the streamers are more tolerant to latency here... and dropouts will be significantly improved.

This issue is not directly related to network bandwidth other than in extreme scenarios of congestion. RTD (round trip delay) is a normal TCP/IP network characteristic, and in short the clients need to be able to tolerate it over the typical operating environment with the supported applications. Typically you can mitigate RTD by having larger TCP window segmentation memory and/or well as having larger amounts of application buffer memory and/or improving the speed and efficiency of the client TCP/IP state machine responsiveness of the client.. I believe Naim ate focussing on the latter. The two former options tend to increase application delay and latency.

Simon

I have heard already quite long that the new firmware is coming, however it takes too long now. I hope the mentioned improvements will be soon rolled out. While I understand that a good testing processs is needed, it's not what we should expect in the world of software updates.

Dozey posted:

Personally I would prefer to have poor tidal sound quality with no dropouts than super sound quality for 5 seconds followed by a 20 second dropout, which is what I get at present.

Surely it is not too much to ask in this day and age to have both the best sound quality available and no (or very few) drop-outs. Actually I am reasonably satisfied with the SQ of full fat Tidal. It is just that there was more than a hint (from Naim and the Beta team) that the firmware update came with enhanced SQ.

Although I am happy to wait until Naim get the sound they want from the FW update, some communication would be nice. Not a running commentary, but some update. The silence is deafening.

audio1946 posted:

the quality of tidal is very good, it seems at busy time at the end of the day an occasional drop , so what  . 

Because there is the prospect of even better SQ and fewer dropouts with the long-awaited firmware update FREE! Can't turn your nose up at that!

I don't know if anyone's heard of this new project Tidal is working on regarding MQA file format. MQA is something Bob Stuart from Meridian has invented and Tidal, as well as a large portion of the industry, is thinking to embrace. Is Naim going to embrace the format as well? If anyone's interested to learn more about this there's a very informative video on YouTube from Rocky Mountain  Audio Fest 2015 called Streaming Audio: Preserving the past, protecting the future.

vinylrocks posted:

I don't know if anyone's heard of this new project Tidal is working on regarding MQA file format. MQA is something Bob Stuart from Meridian has invented and Tidal, as well as a large portion of the industry, is thinking to embrace. Is Naim going to embrace the format as well? If anyone's interested to learn more about this there's a very informative video on YouTube from Rocky Mountain  Audio Fest 2015 called Streaming Audio: Preserving the past, protecting the future.

Great question and one I would certainly like answered. But I am afraid we will not get a definitive answer from Naim as it has been stated many times on other threads that Naim do not comment on current or future developments prior to a formal launch.

Ooh, I hope I am proved wrong here.

Bananahead posted:

I'm not sure why Naim would be willing to pay a license fee for a lossy format that seems to have almost no industry support. 

As I understand it isn't lossy at all! You can have a go at their website to see the current status of industry support which includes pioneer, onkyo, NAD as well as Warner music, 2L  etc...also please have a look at the video I mention before you comment. 

Bananahead posted:

I'm not sure why Naim would be willing to pay a license fee for a lossy format that seems to have almost no industry support. 

That's my general thinking too. Not that I am bothered either way. 

MQA has been in gestation for longer than I can remember. Maybe one day. Or not.

vinylrocks posted:
Bananahead posted:

I'm not sure why Naim would be willing to pay a license fee for a lossy format that seems to have almost no industry support. 

As I understand it isn't lossy at all! You can have a go at their website to see the current status of industry support which includes pioneer, onkyo, NAD as well as Warner music, 2L  etc...also please have a look at the video I mention before you comment. 

It is lossy at least in a mathematical sense in that there is no reverse algorithm to restore the compressed data exactly to the original.

its like taking the sum "2+2+2+2+2+2". Lossily it can be stored as 10. Losslessly it can be stored as 5x2 (if you define the lossless algorithm as storing multiple addition algorithms as multiplication so you know how to restore it).

Eloise posted:
vinylrocks posted:
Bananahead posted:

I'm not sure why Naim would be willing to pay a license fee for a lossy format that seems to have almost no industry support. 

As I understand it isn't lossy at all! You can have a go at their website to see the current status of industry support which includes pioneer, onkyo, NAD as well as Warner music, 2L  etc...also please have a look at the video I mention before you comment. 

It is lossy at least in a mathematical sense in that there is no reverse algorithm to restore the compressed data exactly to the original.

its like taking the sum "2+2+2+2+2+2". Lossily it can be stored as 10. Losslessly it can be stored as 5x2 (if you define the lossless algorithm as storing multiple addition algorithms as multiplication so you know how to restore it).

I count myself as being somewhat mathematically challenged, but surely you mean 2+2+2+2+2 

vinylrocks posted:

That's very interesting! I'm not very familiar to the subject myself but all the research I've done shows otherwise. 

Take a look in this very detailed presentation https://youtu.be/T5o6XHVK2HA

if you don't want to be bothered just keep the part from 14.23-17.50 where he explains the lossless uncompression of the files.

Hi, yes MQA is lossy, here is a wiki https://en.m.wikipedia.org/wik...uality_Authenticated with some references.

However just because it's lossy, don't discount it... the interesting thing with MQA is the calibrated construction and reconstruction filtering at both ends of the ADC and DAC chain. If you study DSP and digital encoding you know that theoretically both should be matched for optimum conversion and reconstruction... and is an Achilles heel of current and ubiquitous digital audio processing in the audio industry and I suspect limits conventional hidef. Unfortunately this beneficial area of the MQA description seems to be full of flowery slightly obviscating language (IMO)

However my concern is how it handles high speed timing info as opposed to frequencies.. research shows (as documented by various papers at the AES) that for many true hidef is down to inter timing information  as opposed to extended frequency information in the analogue domain. True hidef is described by some as being indistinguishable from reality... as opposed to technical parameters.

Also looking at the MQA implementation discussions, I can't see how  MQA could work effectively with the current Naim streamer architectures.

Simon

Simon I get it there is a lossy part of the compression process that only affects information over 48K which almost always is nothing but noise. We have to make some distinctions though between audio sampling and frequency response. Normal PCM digital files may be 44.1k but carry information that goes up to 21-22K. MQA promises lossless 0-48K frequency response and lossy 48-192 in one file that could replace red book format and could be transmitted near today's cd quality streaming bit rates. On top this technology carrys a digital fingerprint inside the file so when the file is corrupted or parts are missing it can let you know you are playing a non perfect file.

As we know I doubt it if there is a microphone used in recording studios today that captures more than 40K frequency response. So do we need 24/192? The answer is yes but for recording purposes where multichannel recordings with various effects take space without being compressed. 

Anyway, maybe I'm wrong but I was intrigued with the thought...

vinylrocks posted:

Simon I get it there is a lossy part of the compression process that only affects information over 48K which almost always is nothing but noise. We have to make some distinctions though between audio sampling and frequency response. Normal PCM digital files may be 44.1k but carry information that goes up to 21-22K. MQA promises lossless 0-48K frequency response and lossy 48-192 in one file that could replace red book format and could be transmitted near today's cd quality streaming bit rates. On top this technology carrys a digital fingerprint inside the file so when the file is corrupted or parts are missing it can let you know you are playing a non perfect file.

As we know I doubt it if there is a microphone used in recording studios today that captures more than 40K frequency response. So do we need 24/192? The answer is yes but for recording purposes where multichannel recordings with various effects take space without being compressed. 

Anyway, maybe I'm wrong but I was intrigued with the thought...

Just a minor correction, since the bandwidth of frequencies is as a rule of a thumb half of the frequency rate (hence 44.1 leads to 22,05) the upper frequency we get with 192 is 96K. So as I understand it is the 48-96K frequency bandwidth which is lossyly compressed. 

Yes, and don't be constrained in thinking the Nyquist sample frequency only relates to acoustic frequency pitch. They key consideration with Human hearing is also the  inter sound timing.. and as we get older this is only marginally affected where as pitch detection more distinctly deteriorates. Of course the Nyquist sampling theory doesn't differentiate between these two which is why we can see a preference for higher sample rates with a significantly lower pass reconstruction filter. It is this timing info I am uncertain how it is constrained by MQA, and perhaps its limited to the 'base band lossless ' sample rate element of the MQA encoding

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