Ed5 : BD n°4 Stereo- of the later years 1987-2019 Limited Edition Box – 2019
Presentation
This is the stereo track of the BD of “Live at Knebworth 1990” from The Later Years 1987-2019 Limited Edition Box.
| Label | Pink Floyd Records |
| Reference | BD n°4 Stereo- of the later years 1987-2019 Limited Edition Box – 2019 |
| Format (speed) | Bluray 2.0 |
| Type | Stereo 24bits 48 kHz |
| Master | Digital |
| Mastering/Pressing | Digital |
| Original recording | Digital |
| State | US |
| Year original | 1990 |
| Year production | 2019 |
Waveform
Like the Ed4 CD of the later years 1987-2019 Limited Edition Box , this edition has a godd dynamic DR10, but with a little compression as shown by the signal in the green area (DR8 for this track).
Spectrum
The curve represents the average frequency distribution over the sample “Comfortably Numb”.
The two curves are superposed, a similar master is used for Ed4 CD and Ed5 Bluray stereo. The master is in 44.1 kHz.
Spectrogram
Spectrogram is another representation of frequency versus time of a track. For each channel (right and left), horizontal axis represents time, and the vertical axis represents frequency. The amplitude is represented by the intensity (brightness) of the color of each point in the image.
The yellow arrow represents the normal collapse arround 22 kHz (sampling frequency at 44.1 kHz or 48kHz of the master). No signal above 22kHz (black lines).
Ed6 : BD n°4 5.1- of the later years 1987-2019 Limited Edition Box – 2019
Presentation
This is the 5.1 track of the Bluray Disc of “Live at Knebworth 1990” from The Later Years 1987-2019 Limited Edition Box.
| Label | Pink Floyd Records |
| Reference | BD n°4 with 5.1 sound of the later years 1987-2019 Limited Edition Box – 2019 |
| Format (speed) | Bluray DTS HD Master Audio 5.1 |
| Type | DTS HD Master Audio 5.1 24 bits, 48 kHz |
| Master | Digital |
| Mastering/Pressing | Digital |
| Original recording | Digital |
| State | US |
| Year original | 1990 |
| Year production | 2019 |
Waveform
This edition is dynamic, we can see many attacks of the instruments that give this dynamic rendering. As opposed to the Ed5 BD Stereo and Ed4 CD version which is a little compressed.
Spectrum
The curve represents the average frequency distribution over the sample “Comfortably Numb”. The 6 curves represent the 5.1 signal (Right, Left, Center, LFE, Surround Right, Surrounf Left). The yellow area shows the limit in the low frequencies of the surround channels below 200 Hz. The White area shows the limit à 22 kHz for Right, Left, Center, Surround Right, Surrounf Left. The maximum frequency of the LFE ( Low Frequency Effect) it is lower around 100 Hz.
Spectrogram
Spectrogram is another representation of frequency versus time of a track. For each channel (right and left), horizontal axis represents time, and the vertical axis represents frequency. The amplitude is represented by the intensity (brightness) of the color of each point in the image.
The yellow arrow represents the normal collapse arround 20 kHz (sampling frequency of the master at 48 kHz). Above 20 kHz , there is no signal (black area).
The green arrow represents the limit of the LFE channel arround 120 Hz.
Magic Vinyl vs Digital 
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