Dianne Reeves – I remember (review Vinyl 1991, Vinyl PPA 2012, Vinyl 2014, CD, Cassette)

Ed5 K7 : CD Blue Note ref B4-90264 (1991)

Presentation

The k7 is produced using the XDR (Expanded Dynamic Range) process.
The recording has been made with Dolby HX Pro for maximum dynamics and more detailed highs.
The tape is also encoded in Dolby B. But this one is not used during the reading not to attenuate more the treble.
The azimuth of the playback head has been made to optimize the playback of the tape.

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Label	Blue Note
Reference	B4-90264
Format (speed)	K7, Dolby HX Pro, Dolby B
Type	Album
Master	Mastered By – Robert Vosgien
Mastering/Pressing	XDR (Expanded Dynamic Range) Cassette
Original recording	Digital
State	US
Year original	1991
Year production	1991

Waveform

The waveform represents the Tracks of the side 1 of the cassette.
Like the 4 other release, the graph clearly shows the differences in levels and thus in dynamics for this track. The waveform between the right and left channel is different, this is due to the distribution of the instruments.

Spectrum

The curve represents the average frequency distribution over the Side A of the album. Interesting characteristics on this curve are:

1. Compared to the CD release, it is not a collapse in the signal level after 22 kHz (Yellow), This is du to the noise of the cassette deck player.
2. Between 6 to 20 kHz (green), the Ed5 cassette is lower Ed4 CD. But it’s upper if the Ed3 Vinyl. The Cassette will be more detail in the trebles than the Ed3 Vinyl 2012.

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 curve represents the average frequency distribution over the Tracks equivalent of the vinyl’s side B.
The yellow arrows represent the noise after 22 kHz  (in Yellow in the previous graph).
we can see that the music is up to 20 kHz, also on a cassette.

Spectrogram

A new curve that represents the noise of cassette (white curve) vs surface noise of vinyl (blue curve).
The noise level is louder on the cassette compared to vinyl (10 dB more).Below 100 Hz, the cassette is less noisy.
The cassette is played without the Dolby B noise reduction system.

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