Sound Performance Lab 9737 Скачать руководство пользователя страница 10

Страница: 10 / 16

Machine Head

UTPUT

AIN

varies the output level of the digital data stream.

It is variable between -12 dB and +12 dB in 0.1 dB steps.

The adjusted O

UTPUT

AIN

value is shown in the LC-display

(see 7) and in the O

UTPUT

PPM meter (see 8).

In practice you will start with the

OUTPUT

AIN

set to 0 dB. In

case you have used high D

RIVE

values you will use the O

UTPUT

AIN

to compensate for the slight level increase.

You can also use the O

UTPUT

AIN

control to compensate for

the loudness difference between unprocessed and processed
signal to judge upon the sonic effect alone. After you have
reduced the O

UTPUT

AIN

until original and processed signal

have the same loudness you can readout the loudness increase
on the O

UTPUT

PPM meters compared to the I

NPUT

PPM meters.

Also, if you have chosen a positve setting on the HF-A

DJUST

control, it may be necessary to reduce the O

UTPUT

AIN

slightly

in order to prevent clipping. Watch the C

LIP

-LED

You will set a positive O

UTPUT

AIN

, when there is still

headroom left after processing. Always check this on the
loudest part of the audio file being processed and watch the
C

LIP

-LEDs.

With the H

IGH

APE

PEED

switch you can change the speed of

the vitual tape from standard tape speed (15 ips) to high tape
speed (30 ips).

When H

IGH

APE

PEED

is activated the algorithm simulates

the pre-emphasis for high speed recording. The upper mid and
high frequencies as well as the harmonical content gain better
resolution and finer detail.

Note that the 40 Hz to 70 Hz bass-reduction induced when

recording to analog tape at 30 ips is not reproduced!

The LC-display shows all encoder settings and the number of

the preset being used in the last session with the M

ACHINE

EAD

(for details on P

RESETS

refer to 9).

More information is displayed when activating the I

NFO

pages

(see 10). Press S

TORE

and A

PPLY

for 1 sec. to enter the I

NFO

pages.

The I

NPUT

and O

UTPUT

LED chains are PPM (peak level) meters

with signal and clip indicators. The metering offers 1 dB resol-
tion for the last 3 dB before 0 dB.

The I

NPUT

PPM meters show the peak level after the I

NPUT

AIN

control (see 2).

Control Elements

Compensating a level
and/or loudness increase
due to processing

Gaining a finer high
frequency resolution when
selecting H

IGH

APE

PEED

Output Gain

High Tape Speed

LC-display

LED chains

Содержание 9737

Страница 1: ...Manual Digital Tape Saturation Processor Machine Head Model 9737 ...

Страница 2: ...PL Limitations of Liability In no event will SPL be liable for any damages including loss of data lost profits cost of cover or other special incidental consequential or indirect damages arising from the use of the unit however caused and on any theory of liabi lity This limitation will apply even if SPL or an authorized dealer has been advised of the possibility of such damage SPL electronics Gmb...

Страница 3: ...B Team I would like to start with my thanks to all our staff who created what is to be described here Special thanks go to Kai Lukas from Lukas Hartmann Soundart Jörg Houpert and Klaus Peter Webersinke from Spectral Design as well as Harald Obenland from Octum electronics The importance of their exceptional qualification and talents cannot be overesti mated Our products are often tested and compar...

Страница 4: ...ion effects for full scale input signals and to deliver full scale output signals afterwords The intensity of high frequency damping varies from one tape to another and is therefore fully adju stable one the MACHINE HEAD It is now also possible to make use of extreme saturation effects without high frequency damping at all In fact MACHINE HEAd provides all the benefits of analogue recording withou...

Страница 5: ... The general concept is that each digital processor should fulfill only one task in the most effective way possible and with a minimum of controls and switches As much as possible should be automated to promote user friendly opera tion the external controls access only the sonically relevant parameters The housing of the MACHINE HEAD has the standard 19 EIA format and occupies 1U 44 45 mm in your ...

Страница 6: ...ect your computer with the MACHINE HEAD via a serial port with a standard Z modem cable RS 232 for PC and RS 422 for MAC 2 Open a terminal program like Hyperterminal on PC and make the following adjustments Baud rate 9600 Stop bit 1 Parity none Data bit 8 Handshake no Transfer mode ZMODEM 3 Switch on the MACHINE HEAD and depress both PRESET UP and PRESET DOWN until the LC display says wait for Zmo...

Страница 7: ...e audio signal that passes the input electronics of an analogue tape machine is first processed by the recording equalizer The high frequencies are boosted to compensate for the level loss of those frequencies during magnetization and to improve the signal to noise ratio A high frequency bias current is afterwards added to the signal to linearize the non linear hysteresis transfer curve of the mag...

Страница 8: ...he INPUT PPM meters displays the actual input level after theINPUT GAIN control In practise you will start with the INPUT GAIN set to 0dB For most applications this is the appropriate setting If your source material is of ver y low level or not normalized yet you can use the INPUT GAIN control to drive the source material near full scale If you are processing full scale material it may be neces sa...

Страница 9: ... the process for instant comparison between unprocessed and processed signal Internally the MACHINE HEAD has to create a headroom especially when processing full scale material to compute the tape saturation algorithm With a DRIVE set to true 0 you will loose 7dB headroom As a starting position the DRIVE is there fore set to 0 which is equivalent to 7dB of recording level Therefore you also have n...

Страница 10: ...loudest part of the audio file being processed and watch the CLIP LEDs With the HIGH TAPE SPEED switch you can change the speed of the vitual tape from standard tape speed 15ips to high tape speed 30ips When HIGH TAPE SPEED is activated the algorithm simulates the pre emphasis for high speed recording The upper mid and high frequencies as well as the harmonical content gain better resolution and f...

Страница 11: ...ss STORE for one second The LED starts to flash indicating that the STORE mode has been activated The LC display now shows the values of the presets including the BOOST function before the MACHINE HEAD was switched off the last time Use UP and DOWN to select a new preset number The status LED flashes shortly to indicate that the input depressing UP or DOWN is accepted Keeping UP or DOWN depressed ...

Страница 12: ...arches for an input signal If both inputs are connected the AES EBU input will be selected first If you want to select the S P DIF input you have to call up the INFO pages IMPORTANT When selecting a new input allow the SIG LEDS to go out before stepping to the next input format Otherwise MACHINE HEAD may lose the data stream AES EBU input detected or no AES EBU input detected Press APPLY if AES EB...

Страница 13: ...lay either shows 44 1 kHz 48 kHz or 32 kHz 4 Displaying the Audio Error flag NO no error detected YES error detected 5 Displaying the CRC Error flag NO no error detected YES error detected 6 Displaying the Channel Difference Error flag NO no error detected YES error detected 7 Setting or erasing the Copy Prohibit flag NO flag erased or not set YES flag set 8 Displaying the Original flag NO no orig...

Страница 14: ...e out if you are working with a digital console that does not provide master inserts The UP and DOWN LEDS illuminate indicating that a volume change command is received You can also switch between presets with the MIDI program change command This can especially be useful when you are mastering a song for example that requires different settings for chorus refrain or bridge The APPLY LED illuminate...

Страница 15: ... 110 Ohms S P DIF co axial 2 SPDIF 2 S P DIF input impedance 75 Ohms Wordclock In Through co axial BNC Wordclock in output impedance 75 Ohms MIDI In Through yes RS 232 yes RS 422 max 14V yes Clip display yes Input transformer AES EBU yes Output transformer AES EBU yes Relay Hard Bypass AES EBU yes Measurements AES EBU Jitter 1ns S P DIF Jitter 3ns Wordclock In Jitter 1 5ns Power supply Torroidal t...

Страница 16: ...thorized SPL warranty repair facility in the country where purchased or to the SPL factory in Germany in the original packaging or a replacement supplied by SPL with all trans portation costs and full insurance paid each way by the purchaser or owner All remedies and the measure of damages are limited to the above services It is possible that economic loss or injury to person or property may resul...

Результаты поиска

Содержание 9737

Отзывы:

Бренды по названию

Популярные бренды

Sound Performance Lab 9737, Руководство пользователя

Результаты поиска

Содержание 9737

Отзывы:

Бренды по названию

Популярные бренды