[ProAudio] [ProAud] The High-Resolution Challenge

[James Johnston]

I must say that I am sorely tempted to see if I can get somebody to whip up
an app that measures effective bandwidth of a PCM track at any common
sampling rate.

On Mon, Feb 10, 2020 at 10:15 PM mark whitehouse via ProAudio <
proaudio at bach.pgm.com> wrote:

> Following on from our discussion of around 18 months ago,
> I know in Australia there were moves to get some kind of "truth in
> marketing"
> in regards to High sample rate recordings.
> And promoting the differences in standards that are now available.
>
> Essentially a standard that could be understood by and promoted to
> consumers, musicians etc.
>
> It doesnt seem to have gone far and when you see things like this
> http://archimago.blogspot.com/2013/07/list-suspected-44-or-48khz-pcm.html
>
>
> It makes you wonder if things will improve.
> Is there any consensus on getting this acknowledged?
>
> regards
> Mark
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> On Fri, Jun 15, 2018 at 8:25 AM Mark Waldrep <mwaldrep at aixmediagroup.com>
> wrote:
>
>> In the interest of exploring the issue of perceptibility of
>> high-resolution vs. Redbook versions of the exact same file, I've posted on
>> my blog page today "The High-Resolution Audio Challenge". I've prepared 6
>> of my AIX Records native 96 kHz/24-bit PCM masters as A and B versions. One
>> is the original high-res master and the other is a Redbook downconversion.
>> You are welcome to download the files and play them. Please do not share
>> them outside of the group. I'm conducting a casual survey to see if people
>> can detect differences. I don't claim this will be definitive. However,
>> I've always complained that previous tests failed because the source
>> materials weren't actual high-resolution files. This removes that flaw.
>> These are the real deal. The conversion was done using triangular dither
>> and noise shaping.
>>
>> You can find the article at http://www.realhd-audio.com/?p=6197
>>
>> Mark Waldrep, Ph.D.
>> AIX Records and author of
>> Music and Audio: A User Guide To Better Sound
>>
>>
>> On 6/14/18, 3:13 PM, "Stephen Morley" <proaudio-bounces at bach.pgm.com on
>> behalf of stephenmorley at iprimus.com.au> wrote:
>>
>>     I can record DXD and the downsample in Pyramix, or else at 192/24 and
>> then downsample to 44/24
>>     -------- Original message --------From: James Johnston <
>> audioskeptic at gmail.com> Date: 14/6/18  8:56 pm  (GMT+10:00) To:
>> proaudio at bach.pgm.com Subject: Re: [ProAud] Wow. 384/32 LPCM!
>>     Just make sure the content is identical on both.
>>
>>     On Thu, Jun 14, 2018 at 2:36 AM, Stephen Morley <
>>     stephenmorley at iprimus.com.au> wrote:
>>
>>     > Hi James,I could send something, but not until next week when I
>> return
>>     > from leave.Stephen
>>     > -------- Original message --------From: James Johnston <
>>     > audioskeptic at gmail.com> Date: 13/6/18  8:53 am  (GMT+10:00) To:
>>     > proaudio at bach.pgm.com Subject: Re: [ProAud] Wow. 384/32 LPCM!
>>     > I'll repeat my request:
>>     >
>>     > Send me some recordings at 24/192 and a similar one at 44/16. I can
>> and
>>     > will measure the actual "information" present, via SFM and bit
>> depth.
>>     >
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>>
>>
>>
>>     --
>>     James D. (jj) Johnston
>>     Independent Audio and Electroacoustics Consultant
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>>
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-- 
James D. (jj) Johnston
Independent Audio and Electroacoustics Consultant
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