Review
Ed1 : Vinyl- Knebworth Concert 1990 ref PFRLP34 – 2021
Presentation
This is a double vinyls in 45 rpm with 16 pages booklet.
| Label | Pink Floyd Records |
| Reference | PFRLP34 |
| Format (speed) | Double vinyl 45 rpm 180g |
| Type | Double vinyl with 16 pages booklet |
| Master | Digital |
| Mastering/Pressing | US/Europe |
| Original recording | Digital |
| State | US |
| Year original | 1990 |
| Year production | 2021 |
Waveform
The waveform represents all the tracks of the album.
This edition is dynamic, we can see many attacks of the instruments that gives this dynamic rendering. As opposed to the Ed2 CD version which is a little compressed.
Spectrum
The Spectrum allows to check the tonal balance of the music (balance between treble, medium and bass sounds) and to detect process that may have been carried out during the recording, the mixing, mastering or manufacturing phases. It is also possible to detect frequency interference issues.
The curve represents the average frequency distribution over the sample “Comfortably Numb”.
The interesting features on this curve are the following:
- The two curves are superposed up to 15 kHz.
- The treble level (Ed1 Vinyl) above 15kHz is lower (Green area) than on the Ed2 CD 2021
- The high frequency cuts at 20kHz due to the digital master. This is noise (Yellow area) on the Ed1 vinyl due to the analog noise of vinyl.
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 spectrogram, the yellow arrow as for the spectrum , reveals the limit around 22 kHz due to the digital mastering. Beyond 22 kHz (green arrow), there is noise or distortion due to the vinyl playback method.
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