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Quality of sound distorted when Mixing down to .mp3 to email or text

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sayclean
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Joined: Mon Nov 06, 2017 4:06 pm

Quality of sound distorted when Mixing down to .mp3 to email or text

Postby sayclean » Sun Sep 01, 2019 1:13 am

When I mix down tracks to .mp3 in order to email or text someone the tracks, I have some people complain about the quality of tracks being distorted. I have sent these same tracks to myself and they sound fine on my iPhone. But it seems that people that have Galaxy or Android phone don't get a quality recording on their phone when it is sent in a text. They say the emails sound better, but on their phone they said tracks sound compressed or crunchy sounding. Is this a problem with mixing down to correct bit rates or sample rates or is it a phone issue sending the .mp3 songs by text? I have tried different Bit and Sample rates to match project, but it doesn't seem to help. And what is the best settings for mixing down .mp3 and .wav tracks in the editing function when mixing them down. I know this is 2 different questions, but has anyone else experienced this problem when sending tracks by phone or email ?

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jlouvar
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Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby jlouvar » Sun Sep 01, 2019 4:07 am

sayclean wrote:When I mix down tracks to .mp3 in order to email or text someone the tracks, I have some people complain about the quality of tracks being distorted. I have sent these same tracks to myself and they sound fine on my iPhone. But it seems that people that have Galaxy or Android phone don't get a quality recording on their phone when it is sent in a text. They say the emails sound better, but on their phone they said tracks sound compressed or crunchy sounding. Is this a problem with mixing down to correct bit rates or sample rates or is it a phone issue sending the .mp3 songs by text? I have tried different Bit and Sample rates to match project, but it doesn't seem to help. And what is the best settings for mixing down .mp3 and .wav tracks in the editing function when mixing them down. I know this is 2 different questions, but has anyone else experienced this problem when sending tracks by phone or email ?


Hmm, I haven't experienced that problem and I seriously doubt it's because they have Galaxy or Android phones, or text vs. email... But maybe they're listening with crummy speakers or earbuds.
If you haven't already, checkout this thread: http://forums.acoustica.com/bbs/viewtop ... =4&t=24566
- Joe -
MX 8.1 Pro, Build 418, 64-bit. i5, 1.80GHz, 8GB, Windows 10. Focusrite Scarlett 2i4, Event and PreSonus monitors, Sony MDR-7506, Korg TR61, Akai MPK249, Fender P & J basses, Ric, Strat, D35, stomp boxes and a lot of microphones, etc.

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Mark Bliss
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Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby Mark Bliss » Sun Sep 01, 2019 4:49 am

I dont text, nor do I own a "smart" phone- so I've never experienced this first hand.

But you need to consider that sharing via embedded methods like you describe very likely means there is further data compression being applied to the files you send and is very likely degrading the result for the end user.

Even sharing a file via email, the experience may vary wildly depending on the media player used, speaker or monitoring device used etc.

When audio quality is of interest, the best methodology currently remains in sharing an uncompressed wav file with someone who will be playing it back on audiophile grade gear of some configuration.

Your next best bet is to use a streaming service that at least assures the end listener has access to the same quality of file you created. Or at least reasonably close.

But in the end, if the end user is listening on a smart phone (or equiv.) the result is always going to be far from ideal and fairly random.
Stay in tune, Mark

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sayclean
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Joined: Mon Nov 06, 2017 4:06 pm

Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby sayclean » Sun Sep 01, 2019 5:26 am

jlouvar wrote:
sayclean wrote:When I mix down tracks to .mp3 in order to email or text someone the tracks, I have some people complain about the quality of tracks being distorted. I have sent these same tracks to myself and they sound fine on my iPhone. But it seems that people that have Galaxy or Android phone don't get a quality recording on their phone when it is sent in a text. They say the emails sound better, but on their phone they said tracks sound compressed or crunchy sounding. Is this a problem with mixing down to correct bit rates or sample rates or is it a phone issue sending the .mp3 songs by text? I have tried different Bit and Sample rates to match project, but it doesn't seem to help. And what is the best settings for mixing down .mp3 and .wav tracks in the editing function when mixing them down. I know this is 2 different questions, but has anyone else experienced this problem when sending tracks by phone or email ?


Hmm, I haven't experienced that problem and I seriously doubt it's because they have Galaxy or Android phones, or text vs. email... But maybe they're listening with crummy speakers or earbuds.
If you haven't already, checkout this thread: http://forums.acoustica.com/bbs/viewtop ... =4&t=24566


Yes, I read that post and understand the explanation, but was curious why .mp3 on certain smart phones don’t transfer the same quality sometimes. I use .wav on DropBox for important sharing of files. Thanks for your reply.

sayclean
Posts: 8
Joined: Mon Nov 06, 2017 4:06 pm

Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby sayclean » Sun Sep 01, 2019 5:28 am

Mark Bliss wrote:I dont text, nor do I own a "smart" phone- so I've never experienced this first hand.

But you need to consider that sharing via embedded methods like you describe very likely means there is further data compression being applied to the files you send and is very likely degrading the result for the end user.

Even sharing a file via email, the experience may vary wildly depending on the media player used, speaker or monitoring device used etc.

When audio quality is of interest, the best methodology currently remains in sharing an uncompressed wav file with someone who will be playing it back on audiophile grade gear of some configuration.

Your next best bet is to use a streaming service that at least assures the end listener has access to the same quality of file you created. Or at least reasonably close.

But in the end, if the end user is listening on a smart phone (or equiv.) the result is always going to be far from ideal and fairly random.


Yes, I use .wav thru Dropbox and Sound Cloud for more important sharing of files. Thanks for your reply.

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Mark Bliss
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Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby Mark Bliss » Sun Sep 01, 2019 8:09 pm

A lot of unknowns here. We could guess a lot of things.
I haven't heard the problem, apparently you haven't heard the problem either? And all we have is a vague description?.

Has the user tried comparing to other MP3's of the same type, on the same setup?

I can think of a number of technical reasons an MP3 file may sound different on one system than another, if that is the case. But it would take a bit of testing and a process of elimination. It could be something the specific system or phone doesn't like.
First things:

MP3 mixdowns to what quality setting? Try a different one. 320 for example.

Where is your true peak level at mix-down? It should never exceed -1dBfs for modern MP3 encoders. Maybe try -3 True Peak as an experiment? That is a common recommendation for older MP3 encoders.

Is it possible you have some sub freq content in the file? Try a HPF on the master file, rolling off everything below 30Hz.
The DAC's might like that better.

Maybe the user could compare the MP3 to a 44/16 wav file on their system if possible.

If you are creating the MP3 from within the project, perhaps test a file made from a wav mixdown instead?
*(I only rarely mess with MP3's, but on the occasion I do, I prefer to encode from a 24 bit master file, not a project "mix-down" to MP3.)
But that may or may not matter, as long as the mix-down levels are correctly set. Its just my preference.

Any attempt at "mastering" chains on the main bus perhaps?

And I suspect there's a lot more relevant stuff....
Stay in tune, Mark

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My SOUNDCLOUD Page

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jlouvar
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Re: Quality of sound distorted when Mixing down to .mp3 to email or text

Postby jlouvar » Sun Sep 01, 2019 8:20 pm

sayclean wrote:curious why .mp3 on certain smart phones don’t transfer the same quality sometimes.


Hmm, I'm not sure... Maybe file transfer with some cell phone providers aren't as good as others.
- Joe -
MX 8.1 Pro, Build 418, 64-bit. i5, 1.80GHz, 8GB, Windows 10. Focusrite Scarlett 2i4, Event and PreSonus monitors, Sony MDR-7506, Korg TR61, Akai MPK249, Fender P & J basses, Ric, Strat, D35, stomp boxes and a lot of microphones, etc.


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