Database Develop

Dolby Digital Plus demo files

They'd be great to test setting up my system.
http://www.dolby.com/us/en/consumer/technology/home-theater/dolby-digital-plus-download.html
The audio doesn't play at all on the CC though. Any reason for this? We know it supports DD+

generationgav said:
They'd be great to test setting up my system.
http://www.dolby.com/us/en/consumer/technology/home-theater/dolby-digital-plus-download.html
The audio doesn't play at all on the CC though. Any reason for this? We know it supports DD+
Click to expand...
Click to collapse
No we don't! The only multi-channel audio supported by the Chromecast is AAC:
Supported Media for Google Chromecast.

Restorer said:
No we don't! The only multi-channel audio supported by the Chromecast is AAC:
Supported Media for Google Chromecast.
Click to expand...
Click to collapse
Not entirely true....The Device itself is actually quite capable of spitting out Dolby Surround and does so using the Netflix app.....
The Issue is two fold....
1 - Dolby requires you to license the codec to be able to use it...Netflix did, Google did not....
2 - Netflix operates outside the Google "PROTECTED" Sandbox that all CCast SDK built apps operate in.And that allows it to operate without the usual restrictions imposed by Google on the hardware.
So it's not the device that is incapable it is really how Google has implemented using it.
And I'm not even sure that a Developer could buy a Dolby License and get it to work inside that sandbox either....
Google needs to add this capability by buying a license for Dolby and incorporating it into the Sandbox so other apps can benefit from it as well.
And truth is I wouldn't expect something like that until CCast II is announced. Lets hope it is announced at the next Google I/O

Nice post @Asphyx ! Great info, didn't know that one. Would be great to get plex to play my DD+ movies
Sent from my DROID RAZR HD using Tapatalk

abuttino said:
Nice post @Asphyx ! Great info, didn't know that one. Would be great to get plex to play my DD+ movies
Sent from my DROID RAZR HD using Tapatalk
Click to expand...
Click to collapse
I'm no audio freak but I do appreciate decent surround sound and, to these old ears at least, Plex does a great job of transcoding DTS, DTS-HD MA and DD (AC3 ) tracks to the AAC 5.1 that the Chromecast will accept.
I haven't tried personally but I wasn't aware Plex doesn't accept DD+ soundtracks for transcoding to the CC. Hopefully, Asphyx might enlighten us on this one too?

It accepts DD+ but will remix it to PCM, just like it does for DTS HD. Hell, Plex Home Theater doesn't even support DD+ at the moment.
I despise this downmix too. It plays at a much lower volume with half the dynamic range that DD+ has.
Sent from my DROID RAZR HD using Tapatalk

abuttino said:
It accepts DD+ but will remix it to PCM, just like it does for DTS HD. Hell, Plex Home Theater doesn't even support DD+ at the moment.
I despise this downmix too. It plays at a much lower volume with half the dynamic range that DD+ has.
Sent from my DROID RAZR HD using Tapatalk
Click to expand...
Click to collapse
Ah, so is your quibble more that DD+ is a such big jump up from AC3 that you don't want to revert to that level rather than that Plex messes up?
I am not familiar with DD+ but that is certainly the case (even to my tired old ears) with the lossless HD formats. I never really expected the CC to be able to handle these and Plex does a decent enough job with the few DTS-HD MA tracks I have tried. I do have a wired route to my amp via XBMC and tend to use that for the few rips I have with HD sound but the CC has the huge advantage of being so much more convenient to access :laugh:.
I've always assumed DD+ was something from back in the HD-DVD days? Is it still used much? Where does it sit IYO in the great scheme of multi-channel audio formats: let's say PCM stereo=2 and lossless HD (DTS-HD Master and Dolby TrueHD)=9. Where do your ears rank AC3, DTS, DTS-HD, DD+,

Restorer said:
Ah, so is your quibble more that DD+ is a such big jump up from AC3 that you don't want to revert to that level rather than that Plex messes up?
I am not familiar with DD+ but that is certainly the case (even to my tired old ears) with the lossless HD formats. I never really expected the CC to be able to handle these and Plex does a decent enough job with the few DTS-HD MA tracks I have tried. I do have a wired route to my amp via XBMC and tend to use that for the few rips I have with HD sound but the CC has the huge advantage of being so much more convenient to access :laugh:.
I've always assumed DD+ was something from back in the HD-DVD days? Is it still used much? Where does it sit IYO in the great scheme of multi-channel audio formats: let's say PCM stereo=2 and lossless HD (DTS-HD Master and Dolby TrueHD)=9. Where do your ears rank AC3, DTS, DTS-HD, DD+,
Click to expand...
Click to collapse
Yes, I am certain that AC3 is a big jump from any downmix.
When I play HD-DVD on Plex, it always starts with me increasing the volume about 20 db.. PCM has always been quite a loser in my eyes. DTS or DD has always been the winner. No matter what I am watching, it is always better to have at least one of these tracks. I am unsure of the difference between LPCM and PCM, but I believe it is the same thing in principal. The few disney movies I have with LPCM (Cars, Pirates of the Caribbean 1, 2 and 3) have a better soundtrack than what I hear when downmixed DD+ to PCM.
I can't really boast about my system, it's an 82" ISF and THX calibrated DLP, Pioneer amp, some awesome Inifity towers, Infinity Center and a super rich Velodyne subwoofer. Sounds awesome but, it's still what I'd call a budget system.. Waiting to get into a house I own for the McIntosh stuff
With respect to my system; Over the weekend, my son and I watched "The Amazing Spiderman 2" at theaters on an unfocused AMC Theaters projector. My system completely blew that theater away. Other than a couple effects in the surround channel, it wasn't candy to the ears like I expected it to be. Sony usually uses SDDS and not DD or DTS for theaters.
However, I digress, other than a heavy bass track, DTS has no advantages over DD. They both have splendid dynamic range.
PlexHT is going to get DD+ and other neat audio additions soon enough, but that's only for PlexHT as this thread describes.. So, I guess I am a little off topic and I am just rambling

Restorer said:
I'm no audio freak but I do appreciate decent surround sound and, to these old ears at least, Plex does a great job of transcoding DTS, DTS-HD MA and DD (AC3 ) tracks to the AAC 5.1 that the Chromecast will accept.
I haven't tried personally but I wasn't aware Plex doesn't accept DD+ soundtracks for transcoding to the CC. Hopefully, Asphyx might enlighten us on this one too?
Click to expand...
Click to collapse
Plex will transcode DD+. DHT, AC3 and pretty much any codec FFMPEG is capable of reading...But it usually selects AAC as the target output which the CCast sends as a PCM or LPCM stream to the receiver.
However FFMPEG has had some issues with some versions where it would get the tracks in the wrong place leaving some with no Back or Center Channel. I think most of that has been corrected recently but not sure.
As for the Volume issues you usually lose some volume for the sake of safety and not going over level on a transcode/encode.
In analog to digital work environment there are usually Bars and Tone that is supposed to allow you to set levels properly and be sure that no audio will be too hot for digitization as no audio that follows should be higher than the tone itself...But it's only as good a system as the guy who made the Original.
None of that exists in a digital file to file conversion. So what happens is during the encode it does Audio Leveling to make the loudest audio be good and bases the master volume based on that top mark respectively. Action movies are the worst offenders due to the difference in dynamics from Spoken Word to Action sounds.
AAC when transcoded to properly should be just as good as the Dolby is...It's the same audio the only difference is it is decoded and distinct in AAC but encoded and requires decoding by a Dolby Decoder when it's DHT or DD+. Whichthe transcoder is doing for you when it creates AAC.
The key to good sound is to really analyze the source your transcoding and really tweak the transcoding settings to optimal...
Since in Plex the server is doing the analyzing and the Hardware and source varies so much they tend to stick to transcoder settings that are SAFE FOR ALL as opposed to what is the best for any particular file.
In a situation ike Plex you really should do manual transcoding for each file before you add it to the Library. Then the server doesnt need to do it and you get the best output for each content.
If you find one where the Audio is low you can boost it and re-encode it...

I'd rather play it in MPC-HC. Going through and re-encoding almost 1TB of data isn't going to happen
Thanks for the explanation though
Sent from my DROID RAZR HD using Tapatalk

abuttino said:
I'd rather play it in MPC-HC. Going through and re-encoding almost 1TB of data isn't going to happen
Thanks for the explanation though
Sent from my DROID RAZR HD using Tapatalk
Click to expand...
Click to collapse
I fully understand and agree....I have much more than that myself which was all encoded in MP4/H.264/AAC and MP3 for Android playback (worked for CCast as well) but since then I have decided I really prefer the MKV container with H.264 video and Multitrack Audio (One Stereo and one for Commentary (AAC or MP3), One Surround (AAC or Dolby) and Subtitle track (en) as my preferred Library format.
It would be very hard to impossible for me to re-encode my current library to get what I want...Especially since much of my library is missing the pieces I want included (like Commentary, Multitracks and Subtitles).
So I'm taking it one collection at a time (I'm working on Aliens right now) and re-ripping from Blue Ray to get all the tracks I prefer.
Then replacing the entire collection at once...
Even more time consuming than a simple re-encode but at least I know I will have the movies I really care about archived properly.
For most though Transcoding is more than good enough. I'm just a bit obsessed with how I keep my Library.

abuttino said:
I am unsure of the difference between LPCM and PCM, but I believe it is the same thing in principal. The few disney movies I have with LPCM (Cars, Pirates of the Caribbean 1, 2 and 3) have a better soundtrack than what I hear when downmixed DD+ to PCM.
Click to expand...
Click to collapse
Pretty sure too PCM and LPCM are the same thing i.e. totally uncompressed lossless audio. My amp seems to use PCM to indicate stereo and LPCM for multi-channel though I am not sure if this is a universal convention.
The way I understand it is everything is output from the CC as (L)PCM, having been delivered by Plex as AAC. So if you are saying your DD+ is getting down-mixed to emerge as (PCM) stereo then that should not be happening and will certainly sound way inferior to the original multichannel track. It should be getting output as 5.1 (L)PCM.
But even this is not going to sound as good as the soundtracks on the titles you mention since LPCM from the original source will be as good as it gets - delivered to your amp completely untouched, blank space and all. The (L)PCM delivered by CC to your amp is different to this though. This audio has already been compressed to DD+ and then converted by Plex to AAC. But, as Asphyx has indicated the resulting stream from the CC should sound, as near as makes no difference, just as good as the Dolby if it is getting properly transcoded.
It would probably be worth investigating further if your DD+ is actually getting down-mixed to stereo and if so why. Also, most of us using Windows did have a problem of missing rear channels when CC support by Plex was still in beta. That was soon sorted though, who knows, maybe not for some DD+ users?

Restorer said:
It would probably be worth investigating further if your DD+ is actually getting down-mixed to stereo and if so why. Also, most of us using Windows did have a problem of missing rear channels when CC support by Plex was still in beta. That was soon sorted though, who knows, maybe not for some DD+ users?
Click to expand...
Click to collapse
It is because DD+ is not supported in Plex at the moment. They were waiting for XBMC to get an update called "Gotham" then they were going to fork off that build.
https://forums.plex.tv/index.php/topic/109415-does-plex-support-dd/#entry648738

abuttino said:
It is because DD+ is not supported in Plex at the moment. They were waiting for XBMC to get an update called "Gotham" then they were going to fork off that build.
https://forums.plex.tv/index.php/topic/109415-does-plex-support-dd/#entry648738
Click to expand...
Click to collapse
Well Gotham has been out a few weeks now so hopefully you won't have long to wait :good:.

Restorer said:
Well Gotham has been out a few weeks now so hopefully you won't have long to wait :good:.
Click to expand...
Click to collapse
What was "good" about Gotham, other than support for DD+ ? I am interested to hear the commits that Plex might also fork.

abuttino said:
What was "good" about Gotham, other than support for DD+ ? I am interested to hear the commits that Plex might also fork.
Click to expand...
Click to collapse
I haven't upgraded yet - I'm being chicken and waiting for stable release of 13.1.
Apparently DD+ used to work fine in Eden (v 11) but Frodo (v12) broke it!
Here's the lowdown on what's new in Gotham:
XBMC Gotham FAQs
And more details here:
XBMC Gotham Changelog

[INFO] aptX audio codec support.

hey guys , this video is all about audio codec aptX support for one plus 5 and a small all around information about qualcomm aptX
https://www.youtube.com/watch?v=AyZynHfKMDg&t=16s
hope that helps

jai krishna said:
Click to expand...
Click to collapse
Whats the difference between aptX and aptX HD?

That's a bit high definition kinda thing
ipredatorv said:
Whats the difference between aptX and aptX HD?
Click to expand...
Click to collapse
That will differ with the type of headphones u use

HTC One M7 aptX HD support.

Hello, I'm having a stock htc one M7 and I need aptX HD support. What rom does support it? Or is there a way just by flashing aptX hd on it without bricking anything?
Please help

wait aptx is a hardware thing,right?

Although Qualcomm own aptxHD it doesn't look like any HTC devices support it...
Which devices support aptX HD?
In order to take advantage of the benefits of aptX HD, you'll need to make sure you have a device that supports it. These devices will have the CSR8675 Bluetooth audio system-on-chip (SoC) as it's capable of supporting 24-bit audio from end-to-end.
When aptX HD first launched, not many devices supported it, but now more manufacturers are getting onboard with higher quality streaming.
Smartphones
LG G5
LG G6
LG V20
LG V30
Luna Smartphone
NuAns Neo Reloaded
Onkyo Granbeat
OnePlus 3
OnePlus 3T
OnePlus 5
Sharp SH-03J
Sharp SHV39
Sony Xperia XZ1
Sony Xperia XZ1 Compact
Vertu Constellation Octane
Headphones
Audio Technica ATH-DSR9BT
Audio Technica ATH-DSR7BT
Bowers & Wilkins PX Wireless
Beyerdynamic Aventho Wireless
Beyerdynamic Xelento Wireless
i.Tech ProStereo H2
LG Tone Active Wireless Stereo Headset
LG Tone Platinum
Meters OV-1B
Nuraphones
Sony WH-1000MX2
Sony h.ear in 2 WI-700
Sony h.ear in 2 Wireless NC
Portable Music Players
Astell & Kern Kann
Astell & Kern AK320
Astell & Kern AK380
Astell & Kern AK300
Astell & Kern AK70
Astell & Kern AK70 MKII
Astell & Kern A&Ultimata
Sony Walkman NW-A40
Sony Walkman NW-ZX300
Hi-Fi Components
Astell & Kern XB10
Bluewave Audio Get Wireless Hi-Fi Amplifier
Dali Callisto speaker system
Inateck BR1006 Bluetooth receiver
Naim Uniti Core
Naim Uniti Atom
Naim Uniti Nova
Naim Uniti Star
Don't forget to hit Thanks

If the Qualcomm CPU supports aptX then it would get automatically updated to aptX HD on the phones that ware still supported when it came out. M7 has aptX support but HTC doesn't support this phone anymore so i have switched the support to open source.

You'll get AptX with Oreo i think, bat that will be it...

daedric said:
You'll get AptX with Oreo i think, bat that will be it...
Click to expand...
Click to collapse
Looking to donate to them.

I have found the solution. Have nicely installed the latest stock ROM backup trough TWRP and nicely installed LDAC and aptX HD zips after it. Only kernel doesn't detect it so you can only hear it.

Links:
https://forum.xda-developers.com/htc-one/general/m7-ul-stock-7-19-401-51-europe-wwe-twrp-t3493081
https://forum.xda-developers.com/cr...-xperia-x-ldac-ahc-port-enjoy-hi-res-t3370105
https://forum.xda-developers.com/android/software/mod-aptx-hd-bluetooth-hi-res-audio-t3501991

Tusy said:
I have found the solution. Have nicely installed the latest stock ROM backup trough TWRP and nicely installed LDAC and aptX HD zips after it. Only kernel doesn't detect it so you can only hear it.
Click to expand...
Click to collapse
Tusy said:
Links:
https://forum.xda-developers.com/htc-one/general/m7-ul-stock-7-19-401-51-europe-wwe-twrp-t3493081
https://forum.xda-developers.com/cr...-xperia-x-ldac-ahc-port-enjoy-hi-res-t3370105
https://forum.xda-developers.com/android/software/mod-aptx-hd-bluetooth-hi-res-audio-t3501991
Click to expand...
Click to collapse
Better yet, AR HD and those mods

daedric said:
Better yet, AR HD and those mods
Click to expand...
Click to collapse
I think it would be dirty to not use clean stock for that. Also i have found the best fully functional solution. Everything works, just better turn beats audio off.
Rom
https://forum.xda-developers.com/htc-one/general/m7-ul-stock-7-19-401-51-europe-wwe-twrp-t3493081
Mod
https://forum.xda-developers.com/android/software/mod-xperia-x-premium-walkman-clearaudio-t3373553/amp/

Built a new rom based on the latest XOSP for M7. Trying to find out how to release it.
Added Xperia X full audio port, aptX, aptX HD.
Fixed alot of audio bugs to match xperia and fixed bluetooth stuttering. Everything else already works.

aptX HD

Any news if S9/S9+ will support aptx HD? It says on qualcomm website that SD 845 supports aptX Classic/HD, but not sure if it will actually be available.

A big question! Plus Sony LDAC?

calinormy said:
A big question! Plus Sony LDAC?
Click to expand...
Click to collapse
LDAC is suported. Also somehing called Samsung HD no idea what that is.

Now I'm curious about MQA, since I have Tidal, and apparently the V30 supports MQA... Debating whether to get the S9 or the V30 now.... Slightly better hardware, or better sound? Tough choice...

LDAC will definitely be supported.

bbot3k said:
Any news if S9/S9+ will support aptx HD? It says on qualcomm website that SD 845 supports aptX Classic/HD, but not sure if it will actually be available.
Click to expand...
Click to collapse
At the Samsung event they told me it would support aptX HD and LDAC too

ramheer said:
At the Samsung event they told me it would support aptX HD and LDAC too
Click to expand...
Click to collapse
Thank you for this info! I've been looking all over the internet to find this answer and couldn't. :good:

Shadow12347 said:
Now I'm curious about MQA, since I have Tidal, and apparently the V30 supports MQA... Debating whether to get the S9 or the V30 now.... Slightly better hardware, or better sound? Tough choice...
Click to expand...
Click to collapse
As someone with a V30 who can't wait to get rid of the thing, in my opinion the audio quality boost just isn't worth the headaches of LG's crap software. They're basically about where Samsung was on the S4 as far as stability and usefulness goes.

Can someone explain what aptX HD is?

CuBz90 said:
Can someone explain what aptX HD is?
Click to expand...
Click to collapse
It's a Bluetooth codec it basically sends more data via Bluetooth to your Bluetooth headphones or speaker giving you better sound quality. The headphones or speaker needs to support aptx hd also for it to be effective

ramheer said:
It's a Bluetooth codec it basically sends more data via Bluetooth to your Bluetooth headphones or speaker giving you better sound quality. The headphones or speaker needs to support aptx hd also for it to be effective
Click to expand...
Click to collapse
Thanks for explaining

CuBz90 said:
Thanks for explaining
Click to expand...
Click to collapse
No aptxhd as I have the s9+ and when u go to developer settings and choose the bluetooth codec theres aptx only I'm using the exynos version

Interestingly, LDAC is not turned on automatically. You have to go to bluetooth settings, find relevant headphones, enter its settings and then trigger LDAC on.

Is there a way to see how each bluetooth connection is talking? Connect my headphones and see that it is currently using aptx or sbc and such?

Yes that is found in developer options in the settings menu
Sent from my 9th Guardian of the Galaxy

CuBz90 said:
Can someone explain what aptX HD is?
Click to expand...
Click to collapse
found a well written article : https://www.pocket-lint.com/headpho...-what-is-aptx-hd-and-which-devices-support-it
and apparently there is a site of apt-x indexing which products support their new codec https://www.aptx.com/products?field_aptx_type_tid=483
it's interesting as well as kinda confusing for customers to find product/s (in this case cellphone/s) that will be able to widely support many new acclaimed HD audio codecs.
in regards with samsung phones with Exynos chip, not sure if it supports aptX & aptX HD as of now.

Turn on developer options, then scroll down and you'll find bluetooth codecs. You can select which one you want to use and quality over performance or vice versa etc.

I can confirm that the Exynos version doesn’t support aptX hd. Seeing as it’s a hardware issue, it’s very unlikely that it ever will. Shame as my new b&w px supports the codec. Guess I’ll have to wait for another phone.

Clemens2205 said:
I can confirm that the Exynos version doesn’t support aptX hd. Seeing as it’s a hardware issue, it’s very unlikely that it ever will. Shame as my new b&w px supports the codec. Guess I’ll have to wait for another phone.
Click to expand...
Click to collapse
I kinda have a feeling that the 'AptX' codec in dev options is just AptX HD but they decided to call it AptX for whatever reason.

Hi-Res Audio output

Does Nokia 7 Plus support Hi-Res Audio output?

Use poweramp alpha version for hi res output.

LDAC support already shown for the sony wi-h700 on android p dev beta

I am using poweramp alpha version 705 and the output via jack is 24bit 384Khz.
Auidio quality is great too and is improved after 2 updates..

vishuxperia said:
I am using poweramp alpha version 705 and the output via jack is 24bit 384Khz.
Auidio quality is great too and is improved after 2 updates..
Click to expand...
Click to collapse
I have now bought a N7+ myself and I can comment more thoroughly on this.
I was intrigued by the above comment as to my knowledge, sample rates beyond 192khz are reserved for the flagship snapdragon 835 and 845 processors.
I went into a shop and downloaded some 352.8khz samples for 2l.no and to my surprise, not only did they work in google play music, but it sounded great.
Using USB Audio Player plus, I can see that the 352.8khz audio is being downsampled to 192khz for playback by android, I have no idea how the downsampling is done and I would rather it have been downsampled to an exact multiple, but nonetheless at those sample rates, it still sounds great. If you're an audiophille, you'll have an external dac anyway, it's just convenient to be able to play it back.
Dsd dsf files also playback in google play music, and in usb audio player pro, when output to the Android system, they are being output as 24bit 176.4khz.
I accept this as this content is extremely rare, and flagship grade, you're not going to get everything in a midrange phone.
I'll post screenshots and elaborate more on this later.
What I will say is that the headphone output and amp on the N7+ is solid and very decent, it's not as good as the LG Quad Dac on the g7/v30 but it more than does the job for listening to music even on some over ear headphones. It just makes the removal of the headphone jack on many flagship and Apple phones infuriating when you can get hi res audio this easily!

Leonccyiu said:
I have now bought a N7+ myself and I can comment more thoroughly on this.
I was intrigued by the above comment as to my knowledge, sample rates beyond 192khz are reserved for the flagship snapdragon 835 and 845 processors.
I went into a shop and downloaded some 352.8khz samples for 2l.no and to my surprise, not only did they work in google play music, but it sounded great.
Using USB Audio Player plus, I can see that the 352.8khz audio is being downsampled to 192khz for playback by android, I have no idea how the downsampling is done and I would rather it have been downsampled to an exact multiple, but nonetheless at those sample rates, it still sounds great. If you're an audiophille, you'll have an external dac anyway, it's just convenient to be able to play it back.
Dsd dsf files also playback in google play music, and in usb audio player pro, when output to the Android system, they are being output as 24bit 176.4khz.
I accept this as this content is extremely rare, and flagship grade, you're not going to get everything in a midrange phone.
I'll post screenshots and elaborate more on this later.
What I will say is that the headphone output and amp on the N7+ is solid and very decent, it's not as good as the LG Quad Dac on the g7/v30 but it more than does the job for listening to music even on some over ear headphones. It just makes the removal of the headphone jack on many flagship and Apple phones infuriating when you can get hi res audio this easily!
Click to expand...
Click to collapse
I totally agree with you, The headphone output is so much better in N7+ compared to similar priced devices in market.
I also own an OP2, OP3, OP3t and LgV20 and among all of these LG is on top followed by N7+ which is saying something about this device.