[BC] CD vs LP

[Fred Gleason]

On Monday 22 September 2008 11:37:28 pm Broadcast List USER wrote:
> Soundstream (likely not the same company that now uses that name) had  
> commercial products that used very high sample rates and Delta  
> Modulation.  That equipment was used to record some very fine  
> sounding Telarc records.

I have a 1980  Chalfont release, "The Empire Strikes Back Symphonic Suite", 
played by Charles Gerhardt and the National Philharmonic Orchestra) that is 
indeed very fine sounding, and that prominently features the fact that it was 
recorded using the 'Soundstream Digital Recording System' in its cover art.  
Here are the specs of the system, as per the liner notes:

Digital Format: Full 16-bit Linear encoding and decoding
Sampling Rate: 50,000 samples per second
Frequency Response: Flat from 0 Hz to 21,000 Hz
Total Harmonic Distortion: Less than .004% at 0 VU
Signal to Noise Ratio: 90 dB RMS, unweighted
Dynamic Range: 90 db RMS, unweighted
Wow and Flutter: Unmeasureable
Cross Talk: -80 dB at 0 VU, all frequencies
Audio Print-through: Non-existent
Tape Speed: 35 ips

I'm not entirely sure what '0 VU' means in this context.  Perhaps peaking at 
digital full scale (sample==0xFFFF)?

Cheers!


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| Frederick F. Gleason, Jr. |               Chief Developer               |
|                           |               Paravel Systems               |
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