PQ Encoding, Definitions, Analog Tapes

Input Components Specifications

PQ Encoding

Start recording approx. 15 sec. after Time code start. Please pay special attention to the offset- time of the begin-points. We recommend to use an offset-time of at least 5 frames to avoid that the music start is cut off during playback.

Definitions

•“Begin” marks the start point of a track. It defines the address at which the MD player starts to playback a track.

International Standard Recording Code (ISRC code) and UPC/EAN code (BAR code)

A disc catalogue number by means of a UPC/EAN code and the ISRC numbers as assigned by the IFPI can be recorded on every MD. For this UPC/EAN code and the ISRC numbers must be included in the original PQ Code as supplied by you or it must be specified in the “Premastering Instructions".

Additional Specifications for

R-DAT Tapes

•Sampling frequency: We recommend to use a sampling frequency of 44.1 kHz. Nevertheless, it is also possible to transfer from tapes with a sampling frequency of 48 kHz.

Do not alter the sampling frequency within one tape.

•Time code: SMPTE non-drop-frame; Time code has to be locked to the NTSC video-frames and must be recorded continuously and without interruption. It may not go beyond 23h 59m 59sec 29fr.

•PQ code: The PQ code has to started on digital channel 1 (left channel of the DAT tape). Start recording approx. 15 sec after time code start.

Please do not send us your original master tapes. Send us continuously recorded (no assemble edits) sound checked copies.

Analog Tapes

Please mind the following specifications:

•Acceptable tape speeds:

7.9, 15, 30ips (19, 38, 76cm/s)

•Tape widths: 1/4", 1/2"

•Formats: NAB, CCIR, AES

•Noise reduction: Dolby A, Dolby SR

•Reference signals: as standardized e.g: for 15ips CCIR tape:

5sec	1kHz	0dB	left channel
5sec	1kHz	0dB	right channel
30sec	1kHz	0dB	both channels
10sec	14kHz	-10dB	both channels
10sec	63Hz	-10dB	both channels

If it is not possible to send us a tape with these test tones, please record the tones you have used for machine adjustment at the last sound-check of this tape.

If that is impossible as well, we will adjust to standard reference tones.

•Dolby: If you have used Dolby for noise reduc- tion, your tape has to contain the appropriate Dolby-test-signal.

CD-WO (CD-Write-Once)

CD-WOs have to be recorded without interruption and in accordance with the “Red Book”. It must be possible to play them on standard CD-players. The CD-WOs must not contain uncorrectable errors (C2 errors). These can be caused e.g. by damage of the CD-WO (scratches, finger prints etc.), by defects during recording (medium or recording device) or by an interrupted recording. Disc checker print-outs (e.g. Sony CDA-5000 or Audio Development “CD-CATS”) should be sent together with the CD-WO, if available. All data on the CD-WO (audio and PQ data, ISRC code, etc.) are transferred 1:1 onto the manufactured MDs

Quality of the Sound Carrier

During preparation of the sound carrier, the audio information has to be carefully sound-checked. Please note every unusual noise (kind of noise and time at which it appears) in the ”Sound & Noise Information” (form 2) during this sound-check. By providing this information like shown on the sample form sheets on the following pages a lot of unnecessary delays in production can be avoided. If a noise which is not mentioned on this infor- mation will be found during quality inspection at DADC, the production might be delayed.

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