Spatialization: ●●●●●●●●oo (8.4) – Dynamique: ●●●●o (4.5) – Global: ●●●oo (3.5)
Presentation
This is the Tidal Dolby Atmos presented in Dolby Digital Plus (768 kbits/s) or AC-4 .
As is often the case, the streaming Dolby Atmos version encoded in Dolby Digital Plus is inferior to the Blu-ray Dolby Atmos TrueHD version in terms of detail and spatial precision. However, if you don t have the Blu-ray, this version still allows you to experience and appreciate Steven Wilson s excellent mixing work.
Rating:
- Dynamic: ●●●●o (4.5)
- Bandwidth: ●●●●o (4)
- Spatialization: ●●●●●●●●oo (8.4)
- Restitution: ●●●oo (3.5)
Spatialization:
The spatialization of Tidal Dolby Atmos – 2025 version varies from track to track, with values between 3.8 and 9.6.
Spatialization : ●●●●●●●●oo (8.4)
Below the spatialization for all tracks. Click on the images to zoom in.
Waveform ,Spectrum and Dynamique: DR14 (Min: DR10 , Max: DR18)
The waveform of the Tidal Dolby Atmos – 2025 shows a high range confirmed with DR14.
The spectrogram of the Tidal Dolby Atmos track in 7.1.4 is limited to 20kHz (yellow arrow) with no signal above (white arrow). This limitation is due to Dolby Digital Plus encoding, which is a lossy encoder that limits bandwidth to optimize data size for a bit rate of 768 kbits/s. The green arrow shows the 120Hz filtering of the bass channel (LFE).
The graph below represents the spectrum of the Tidal Dolby Atmos – 2025.
The spectrum of Dolby Atmos version decoded in 7.1 shows that all channels are used. The LFE channel is used with a cutoff frequency of 120 Hz (green arrow). The white arrow indicates the high-frequency limit at 20 kHz due to Dolby Digital Plus encoding. The yellow arrow indicates the high-frequency limit at 24 kHz due to encoding at the 48 kHz sampling frequency used.
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