Inside Your High-Res Music: Linn Records Samples

[amirm]

Per request, here is the analysis of high-resolution music samples that Linn Records kindly provides: http://www.linnrecords.com/recording-test-files.aspx

Yet another adventure awaits us here with new set of problems. Watch the video to find out!

 

[Blumlein 88]

The audio on your video has improved.

The interference in your second example could of course be many things. Lighting or switched supplies.

Sometimes, wide bandwidth microphones will pick up things like that. Not as an audio sound, but as radiated interference. It doesn't take much because so much gain is occurring from microphone to final recording levels.

 

[tomelex]

Great, very interesting and starting too see some definite patterns of poor engineering. Eye opening stuff Amir, thanks.

 

[RayDunzl]

My CDs have none of those ultrasonic problems.

 

[c1ferrari]

That last one was interesting.

 

[steabert]

Interesting analysis, thanks! I've added the full spectrograms for these test files, very funny that these are their files for show-casing hi-res audio

1. 3 Ecossaises, Op. 72 No. 1 in D Major

2. Organ Prelude Vom Himmel kam, BWV 607

3. 6 Gedichte von N. Lenau und Requiem, Op. 90 No. 2, Meine Rose

 

[tuga]

Interesting analysis, thanks! I've added the full spectrograms for these test files, very funny that these are their files for show-casing hi-res audio

Classical music has a very wide dynamic range but interestingly when recorded to convey a listener's perspective (distant mic'ing) it won't feature, in most cases, significant content above 15kHz.

A higher sample rate will allow capture of higher frequency content thus extend the treble range.
A higher bit depth will lower the noise floor thus increase resolution.
I think that these files are adequate for showcasing high-res audio.