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PostPosted: April 27th, 2019, 7:10 am 
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When I export broadcasts or Jingles, I used the highest quality possible: 48k 320kbps CBR
-16 dB LUFS

On the DAW everything is fine.
Also the file when exported: sounds really good.

I import it into SAM and it's sandy :-/

Then I tried to export at 44k 128 kbps CBR and also VBR

Nothing ... when SAM plays, I got sandy reproduction

P.S. I don't use any kind of manipulation into the DSP. Everything is Off ... Files as are recorded, are played.


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PostPosted: April 27th, 2019, 9:50 am 
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Is the sample rate for your Encoder set to 48K as well?

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PostPosted: April 27th, 2019, 10:39 am 
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DJ Cassio wrote:
Is the sample rate for your Encoder set to 48K as well?

the encoder is at 44k1

however the bad audio is earable even before the encoder ... thus out from the player(s)


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PostPosted: April 28th, 2019, 10:29 am 
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How is your pipeline setup? Are you doing any processing on the audio prior to air out? Personally I have by pass all enable and all processing turned off in SAM and apply a plugin on the airout audio only.

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PostPosted: April 28th, 2019, 10:40 am 
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DJ Cassio wrote:
How is your pipeline setup? Are you doing any processing on the audio prior to air out? Personally I have by pass all enable and all processing turned off in SAM and apply a plugin on the airout audio only.


As I said: no process is applied. The processes chain is totally bypassed. With IP radio it's useless.


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PostPosted: April 29th, 2019, 3:06 pm 
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Are you sure you disabled the AGC on the players as wel? (Bypass all)
Haven't heard about problems with audio quality while disabling all the things ever.
I heard about people trying to improve the encoded sound quality using StereoTool and other DSP plugins, but never about issues with worse sound than whatever was the original quality.

While we're at the sampling rate: Did you check to make sure your soundcard is outputting in 48kHz as well? There's a setting for that in Windows Audio Device settings.

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PostPosted: April 30th, 2019, 12:17 am 
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Mastacheata wrote:
Are you sure you disabled the AGC on the players as wel? (Bypass all)
Haven't heard about problems with audio quality while disabling all the things ever.
I heard about people trying to improve the encoded sound quality using StereoTool and other DSP plugins, but never about issues with worse sound than whatever was the original quality.

While we're at the sampling rate: Did you check to make sure your soundcard is outputting in 48kHz as well? There's a setting for that in Windows Audio Device settings.


Yes I'm sure. The button bypass is activated and not any processing item is selected.
The files, when played by any other player of the PC sounds good.
Only when played with SAM, they are sounding "sandy" (it's like there is some residual aliasing. I'm not sure if I explain myself in a way that you can have an idea of the sound).


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PostPosted: April 30th, 2019, 5:15 pm 
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Tormy wrote:
Yes I'm sure. The button bypass is activated and not any processing item is selected.

I was more targeting the different screens where the AGC panel is present.
It's not like I don't believe you, but that's basically the only common mistake one could make with regards to sound quality.

I get that you play some lossy format (MP3?), can you try with a lossless (FLAC) or completely uncompressed (WAVE, AIFF, etc.) format

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PostPosted: May 1st, 2019, 1:31 am 
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Mastacheata wrote:
Tormy wrote:
Yes I'm sure. The button bypass is activated and not any processing item is selected.

I was more targeting the different screens where the AGC panel is present.
It's not like I don't believe you, but that's basically the only common mistake one could make with regards to sound quality.

I get that you play some lossy format (MP3?), can you try with a lossless (FLAC) or completely uncompressed (WAVE, AIFF, etc.) format


Please in attachment the screenshot of the panel I use

I didn't know now SAM supports FLAC ... I will try within today


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SAM_AGC.JPG
SAM_AGC.JPG [ 123.63 KiB | Viewed 622 times ]
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PostPosted: May 1st, 2019, 6:47 am 
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Did you bypass the AGC on the Deck A and Deck B tab as well?
That's what I was asking about in the first place.
Some people miss that there are separate settings for the AGC on each Deck.

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PostPosted: May 1st, 2019, 9:58 am 
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Mastacheata wrote:
Did you bypass the AGC on the Deck A and Deck B tab as well?
That's what I was asking about in the first place.
Some people miss that there are separate settings for the AGC on each Deck.


Ah yes, on all: Deck A, Deck B and all the Aux

BTW I jsut finished a test with the FLAC

If the FLAC is quite compressed: it is played and it's ok (not sandy)
If the FLAC is less compressed: the audio file is skipped


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PostPosted: May 2nd, 2019, 4:00 am 
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So we've narrowed it down to the MP3 decoding of SAM.
Which means either it's completely broken for you or it has problems with the way your DAW encodes MP3.
I don't think you can switch out the MP3 decoder in SAM, that's something the official support needs to look at.

Can you provide a sample file, so we can check if that is caused by the files or your machine?
If it's your machine, I'm really at loss as to why that happens and how to help you.
If it's the encoding/decoding process and happens everywhere with those files, either you have to change your encoding process or Spacial needs to update/replace the decoder used in SAM

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PostPosted: May 4th, 2019, 4:44 am 
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Mastacheata wrote:
So we've narrowed it down to the MP3 decoding of SAM.
Which means either it's completely broken for you or it has problems with the way your DAW encodes MP3.
I don't think you can switch out the MP3 decoder in SAM, that's something the official support needs to look at.

Can you provide a sample file, so we can check if that is caused by the files or your machine?
If it's your machine, I'm really at loss as to why that happens and how to help you.
If it's the encoding/decoding process and happens everywhere with those files, either you have to change your encoding process or Spacial needs to update/replace the decoder used in SAM


Yes sure I can provide it.
DAWs used are Reaper and Cubase and I haeve not issues of course with them.

Tell me please where to send them and I will prepare them


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PostPosted: May 4th, 2019, 8:40 am 
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This is the official helpdesk of Spacial: https://support.spacial.com/hc/en-us/requests/new
It will probably take you a week of going through all the questions we asked again until you can convince them to take a deeper look at your problem, but they are the ones that can help you.

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PostPosted: May 19th, 2019, 12:53 pm 
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Mastacheata wrote:
This is the official helpdesk of Spacial: https://support.spacial.com/hc/en-us/requests/new
It will probably take you a week of going through all the questions we asked again until you can convince them to take a deeper look at your problem, but they are the ones that can help you.

In these days, i got several times this kind of issues and I did solve converting the files from WAV to FLAC instead of to MP3.
I'm afraid to open a ticket with SpacialAudio.

Last time, I did open one in which I wanted to solve the fact that SAM several time freezes during the change of song.
They asked me for the config file that I sent, and they didn't came back ever since.


Now, I have here an MP3 ripped from a CD, that sounds great with every player but in SAM.
From the same CD I ripped the same songs but in WAV and converted in FLAC (44k1 24bit) with Audacity

The FLAC files are sounding great!

I'm very afraid SpacilAudio will ignore this and they will continue to deliver bad MP3 playing systems forever, as well as they neglected the ticket related the freezing moments ...

MP3s are sounding often like full of sand (high frequency spectrum) which is different than aliasing sound.
The "S"es are splitted among the channel .. it looks like a dirty vinyl ...

So: RED light to SAM's players


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