Re: [Jack-Devel] Network Audio Transmission - Quality

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DateMon, 24 Jun 2013 17:13:33 +0200
From [hidden] at trellis dot ch <[hidden] at trellis dot ch
ToMatthew Robbetts <[hidden] at gmail dot com>
CcJACK <[hidden] at lists dot jackaudio dot org>
In-Reply-ToMatthew Robbetts Re: [Jack-Devel] Network Audio Transmission - Quality
Hi,
well it depends on encoding quality too..
Looking at uncompressed and mp3 side by side in baudline, one of the most
obvious differences is that mp3 cuts off at say 18khz. We can hear up to
20khz it's said. When you try with closed earphones, and someone plays a
sine at 16khz (say in jaaa), i would be surprised if anyone can
consciously hear it (easy to test). But some people have very sensitive
ears indeed.
Greetings,
Thomas

> Ah, good idea. I know one person who developed tinnitus and said he became
> more sensitive to such things after. I've no idea if tinnitus specifically
> is a plausible cause, but I like the explanation overall!
>
>
> On 24 June 2013 15:05, Adrian Knoth <[hidden]> wrote:
>
>> On Mon, Jun 24, 2013 at 02:06:42PM +0100, Matthew Robbetts wrote:
>>
>>
>> > >> If I couldn't hear a difference between an original .wav file and a
>> > >> 256kb/s mp3 I'd repair my monitoring equipment.
>> > > .. and join the small though not empty set of people who are capable
>> of
>> > > doing this. double blind testing of 256kbps mp3s and uncompressed
>> digital
>> > > audio generally reveal a failure to be able to differentiate,
>> despite
>> what
>> > > is said so often in mainstream and technical publications.
>> > Is the set really not empty, with a good encoder? I am surprised,
>> frankly.
>>
>> Generally speaking, if you're hearing impaired, your ear no longer
>> functions as anticipated by the psychoacoustic model. That said, the
>> encoder will produce something which sounds different to what you're
>> used to, thus making such files distinguishable.
>>
>>
>> So it's certainly the exception, not the rule.
>>
>> --
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>> keyserver
>>
>> 
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