manualshive.com logo in svg

Calrec Zeta, Руководство оператора

Поделиться
Скачать
Calrec Zeta Скачать руководство пользователя страница 2

No part of this document may be reproduced or 
transmitted in any form or by any means, electronic 
or mechanical, including photocopying and 
scanning, for any purpose, without the prior written 
consent of Calrec Audio Ltd. 

Whilst the Company ensures that all details in this 
document are correct at the time of publication, 
we reserve the right to alter specifications and 
equipment without notice.  Any changes we make 
will be reflected in subsequent issues of this 
document.  The latest version will be available upon 
request.  This publication is for International usage.

Calrec Audio Ltd reserve the right to change 
specifications without notice. E & O.E.

Calrec Audio Ltd

Nutclough Mill
Hebden Bridge
West Yorkshire
England  UK
HX7 8EZ

Tel  +44 (0)1422 842159
Fax +44 (0)1422 845244
Email  [email protected]

calrec.com

The established policy of Calrec Audio Ltd. is 
to seek improvements to the design, specifications 
and manufacture of all products. It is not always 
possible to provide notice outside the company of 
the alterations that take place continually.
 
Despite considerable effort to produce up to 
date information, no literature published by 
the company nor any other material that may be 
provided should be regarded as an infallible guide 
to the specifications available nor does it constitute 
an offer for sale of any particular product.

Alpha, Sigma, Omega, Zeta, Hydra Audio 
Networking and Bluefin High Density Signal 
Processing (HDSP) are registered trade marks of 
Calrec Audio Ltd.  

Dolby®E

 is a registered trade 

mark of Dolby Laboratories, Inc.  All other trade 
marks are acknowledged.

© 2010 Calrec Audio Ltd.  All Rights Reserved.

Содержание Zeta

Страница 1: ...calrec com Zeta Operator manual V1 36 Digital Broadcast Production Console Putting Sound in the Picture...

Страница 2: ...gland UK HX7 8EZ Tel 44 0 1422 842159 Fax 44 0 1422 845244 Email Enquiries calrec com calrec com The established policy of Calrec Audio Ltd is to seek improvements to the design specifications and man...

Страница 3: ...eturns 70 Monitoring Talkback And Oscillator Outputs 71 Direct Output Ports 72 External Meter Output Ports 72 Input Output Ports 73 Direct Input Ports 73 Input Usage Screen 74 Port List Management 75...

Страница 4: ...any modification work Important Information ESD Static Handling Procedures In its completed form this equipment has been designed to have a high level of immunity to static discharges However when ha...

Страница 5: ...For cleaning the front panels of the equipment we recommend anti static screen cleaner sprayed onto a soft cloth to dampen it only Health and Safety Explanation of Warning Symbols The triangular warni...

Страница 6: ...e answering machine all messages are dealt with promptly on the next working day Alternatively a message can be sent to them by email Product Warranty A full list of our conditions warranties relating...

Страница 7: ...calrec com Putting Sound in the Picture ZETA Overview...

Страница 8: ...e Zeta is available in a number of cost effective processing input configurations and three frame sizes with a variety of additional input and output interface options These packages provide focused l...

Страница 9: ...se feeds Simultaneous LCRS stereo and mono outputs available from each 5 1 main output Direct inpu t available to group mains aux and mix minus busses System Up to 48 faders with A and B layers of con...

Страница 10: ...han 70dB Typically 80dB Input Impedance 1k Ohms for Mic gains 1K2 Nominal 10k Ohms for Line gains Sensitivity 18 78dB Equivalent Input Noise 125dB 150 Ohm source 22Hz 22kHz bandwidth Distortion 1dBFS...

Страница 11: ...SL MR SS ST MR SS ST A B GP GP Layering And Assignable Control Assignable Control Each fader has an Assign button for each audio path The Assign buttons are labelled A and B for channel or group paths...

Страница 12: ...n as Audio Packs which are a suggested complement of ports The Audio Pack which most closely matches the requirements of the installation can be chosen and the port quantities can be fine tuned approp...

Страница 13: ...the available ports dB 27 220Hz KEY 1 2 THRESHOLD LINK SIDE CHAIN LB RB OL OR 2 48L 48R TONE M S BUS TONE INPUT SELECTION 1 DIRECT OUTPUT MOVE PATH AFL SRC MAIN GP DIRECT 4 dB DIRECT OUTPUT TB INPUT F...

Страница 14: ...d label associations GPIO and condition switching Options settings are not stored in the console memories but are saved and loaded separately using the buttons on each Options screen This allows chang...

Страница 15: ...the system back up has taken over Error messages where the system cannot recover by itself perhaps because the back up is already in use As the system has many back up features it is possible to conti...

Страница 16: ...16 ZETA Digital Broadcast Production Console...

Страница 17: ...Fader Area calrec com Putting Sound in the Picture ZETA...

Страница 18: ...VCA style group SL The fader path is a slave within a VCA style group ST The path is a stereo channel or group SS This LED is not used GP A group is assigned to the path AFL AFL will be heard through...

Страница 19: ...e fader providing the same function for each of the two paths The A and B faders may also be assigned to a Wild control in which case it will be the opposite fader which is being controlled The colour...

Страница 20: ...wn slaves and the level of its secondary master s slaves by the same amount Changing the CUT AFL and PFL settings of a primary master applies the settings to the slaves secondary masters and their sla...

Страница 21: ...e fade in out columns or by using the nudge buttons Automatic Cross Fading The range for both parameters are 10 ms to 5secs as follows 10ms to 100ms in 10ms steps 100ms to 1sec in 100ms steps 1sec to...

Страница 22: ...22 ZETA Digital Broadcast Production Console...

Страница 23: ...calrec com Putting Sound in the Picture ZETA Inputs And Outputs...

Страница 24: ...e States screen 220Hz 750Hz 3 k 5 dB 3 dB 2 dB KEY 1 2 THRESHOLD RECOVERY RATIO DEPTH ATTACK LINK SIDE CHAIN LEVEL 1 2 3 FREQUENCY IN 10 FLAT REDUCTION C 6 9 12 20 1 6 9 12 LB RB OL OR 2 48L 48R TONE...

Страница 25: ...n the 5 0 level can be turned off faded out and the LFE level turned up The 5 0 level is independent of the LFE level Divergence On mono channels the divergence control sets an amount of the centre si...

Страница 26: ...controls on the control surface In addition the user can choose whether to control the currently assigned fader path or to select a different fader known as the PC Fader to which settings can be appli...

Страница 27: ...ay resources can be assigned seperately to inputs 1 and 2 of each channel The screen shows information relevant to the active input The I P DELAY button in the Input Output section of the control surf...

Страница 28: ...28 ZETA Digital Broadcast Production Console...

Страница 29: ...calrec com Putting Sound in the Picture ZETA Console Functions...

Страница 30: ...cting their fader assign buttons In this way a number of fader paths can be cleared in one operation Multiple fader selection can also be used to allocate a path type to several paths at once The mult...

Страница 31: ...HOLD toggles between SELECT mode and REGIONS mode In SELECT mode select Wild 1 or 2 on the screen and HOLD Any number of fader paths can then be selected individually their fader assign buttons will i...

Страница 32: ...stable by 15dB Bands overlap to allow greater flexibility of settings EQ and Filters are switched in and out of the signal path using the IN button Alternate EQ The ALT button allows switching between...

Страница 33: ...or 2 to assign the channel to the bus Panels EQ DYN Screen The user can view and manipulate the dynamic response using the Panels Dynamics screen All of the dynamics controls available on the control...

Страница 34: ...the mix minus and direct output level controls Pan Balance on stereo channels and groups pans the signal between odd and even tracks Mono on stereo channels and groups only makes the signal mono afte...

Страница 35: ...cting cells which change colour to show the route is made De selecting the cell will remove the route Zoom controls are provided to allow the user to adjust the viewable area Panels Track Output Scree...

Страница 36: ...utput on and off On stereo auxiliaries a dual level display will be shown There cannot be a level offset on the output display Please note that auxiliary output controls cannot be assigned to wild con...

Страница 37: ...r settings on the mono channels will be reset to the cleared down state Any groups or main outputs included in the selected destinations will be ignored Copy Options I Ps copies LB RB L R M S and bala...

Страница 38: ...can be set to display either the pre fader level or the amount of gain reduction applied by the Dynamics setting This is done on the User Chan screen Main Outputs Faders Section The ALL A and ALL B b...

Страница 39: ...ll settings of the pair are cleared A pop up confirmation must be accepted before this action is carried out Pre send Cut Options are available for the pre send to be cut when the channel or group is...

Страница 40: ...ontinuity during console reset The most recent console settings will be fully restored in less than 15 seconds As the console operates independantly of the PC rebooting or failure of the PC will affec...

Страница 41: ...n is carried out It is recommended that settings are saved to memory before these functions are used Channel Clear Clears the currently assigned channel from all settings apart from the port assignmen...

Страница 42: ...put Output screen Talkback is available to individual tracks using the TB button in the track output section of the control surface or using the Panels Track Output screen Talkback is available to Stu...

Страница 43: ...PFL to the PFL LS output APFL CLEAR clears any latched buttons Monitoring Meter and LS Control Alternative Listening Modes All off indicates NORMAL mono stereo or surround depending on the source sele...

Страница 44: ...he user definable selection buttons as follows Select the required selection button on the virtual monitor panel screen button flashes Select the required monitor source from the list Select Allocate...

Страница 45: ...REF LEV button Tone Interrupt The Tone Interrupt buttons are useful for testing stereo monitoring and metering It allows the tone to be interrupted on the left side only or on the left and right side...

Страница 46: ...46 ZETA Digital Broadcast Production Console...

Страница 47: ...calrec com Putting Sound in the Picture ZETA Memory System...

Страница 48: ...all it into the Selected Memory position Memory Controls Saving Memories SAVE EXEC will save console settings to the Selected Memory Alternatively SAVE Memory Number EXEC will save into that memory nu...

Страница 49: ...this is only available when the console is in Technician mode Memory Set Up Screen Stacked Memories Memories either side of the Selected Memory in the stack will appear in the windows either side of t...

Страница 50: ...s from all channels and groups ensure all settings are de selected and select APPLY TO ALL When a path or settings for a path are isolated the path will be highlighted with a red box on the right side...

Страница 51: ...bled all saves are full console saves Partial memory save option does not have to be enabled to allow previously saved partial memories to be loaded Including Channel Components in a Partial Memory Th...

Страница 52: ...52 ZETA Digital Broadcast Production Console...

Страница 53: ...Metering System calrec com Putting Sound in the Picture ZETA...

Страница 54: ...following functions can be metered Main Outputs Group Outputs Auxiliary Outputs Track Outputs Meter Selectors External Inputs Miscellaneous functions Each meter can be Mono Stereo M S Sum and Differe...

Страница 55: ...uffled by selecting a signal from the list and using the Move Up and Move Down buttons The order chosen will be used for all surround meters Screen Brightness Over time the brightness of TFT screens c...

Страница 56: ...fferent columns Changing the number of rows only affects meters in the selected meter s half of the screen Columns There can be 4 or 6 columns in each row across each half of the screen As the screens...

Страница 57: ...the selected meter position in the row until the row is full or you run out of sources in the list This is similar to APPLY TO ROW in the pop up dialogue box COPY TO END allows you to do this after t...

Страница 58: ...ad into Desk The revised file will be Saving and Restoring Meter Configurations saved and the settings sent to the control surface Save to File Save to File will save the configuration being viewed ed...

Страница 59: ...VU 2 0 20 0 1 0 40 60 5 7 3 80 100 1 2 0 2 3 VU 1 MV5279 60 48 38 26 32 16 20 18 14 12 10 8 6 4 2 0 PHASE 1 0 1 MU5380 MU5352 48 60 26 38 32 18 20 60 48 26 38 32 18 20 2 10 16 14 12 6 8 4 0 2 10 14 16...

Страница 60: ...60 ZETA Digital Broadcast Production Console...

Страница 61: ...On Screen Patching calrec com Putting Sound in the Picture ZETA...

Страница 62: ...put ports attached channel inputs insert returns direct inputs or outputs They are displayed in the main section of the screen 1 5 6 2 7 3 4 Input Ports Screen 4 Fader Views It is possible to choose w...

Страница 63: ...ce will be given control ownership over it Other consoles that subsequently connect that source will not be able to control it The grab buttons allow the console to override ownership of the network s...

Страница 64: ...select that port in the output ports screen 3 Output Views These buttons select the different categories of console output signals which can be patched to output ports e g bus outputs insert sends dir...

Страница 65: ...e they have been set up to avoid accidental removal For example the console s Main 1 output signal may be assigned to a particular output port If this were the main studio transmitter output it would...

Страница 66: ...put ports for assignable insert sends can be patched moved and removed here in the same way that bus outputs are patched The input ports connected to the insert return can also be seen These are set u...

Страница 67: ...rces for assignable insert returns can be patched moved and removed here in the same way that channels inputs are patched The output ports connected to the insert send can also be seen These are set u...

Страница 68: ...Most inserts are treated as pairs in the labelling L and R are used to distinguish the two halves of the pair This makes it easier for them to be used as a stereo insert but does not necessarily mean...

Страница 69: ...for main insert sends can be patched moved and removed here in the same way as bus outputs are patched The input ports connected to the main insert return can also be seen These are set up on the I O...

Страница 70: ...t sources for main insert returns can be patched here in the same way that channel inputs are patched The output ports connected to the main insert send can also be seen These are set up on the I O Ou...

Страница 71: ...ched on the I O OUTPUT screen by selecting Mon TB Osc from the list of Output Views LS Monitor Insert The send ports for the LS monitor insert are patched on this screen The return ports are patched o...

Страница 72: ...TPUT screen by selecting Direct Outputs from the list of Output Views Direct Output Ports The output ports for external meters such as a DK phase scope can be patched on the I O OUTPUT screen by selec...

Страница 73: ...t Input Ports Input ports can be patched directly to output ports on the I O INPUT screen by selecting Outputs from the list of Input Views Input ports can be patched to direct inputs on the I O INPUT...

Страница 74: ...shown for each input port along with any long description entered for the port during the set up of the console or on the Options Port Lists screens The input ports can be viewed by list using the se...

Страница 75: ...Port List Management calrec com Putting Sound in the Picture ZETA...

Страница 76: ...not be available for selection on the control surface port selection controls This makes control surface port selection easier as it ensures only the relevant lists are displayed All lists are always...

Страница 77: ...Ports within a list can be grouped into sets by selecting them from the list and selecting Create Set Sets remain together in the list Ports within a set are sorted alphabetically but can be moved int...

Страница 78: ...they are deleted permanently Modify Lists allows each list to be renamed moved to a different view and set to be screen only Screen only lists will be denoted as such On the I O patching screens all t...

Страница 79: ...g it onto the console Open Active Config This button retrieves the settings that the control surface is using and displays them on the screens as the list configuration being viewed edited This allows...

Страница 80: ...80 ZETA Digital Broadcast Production Console...

Страница 81: ...Engineering Information calrec com Putting Sound in the Picture ZETA...

Страница 82: ...llows the Default Memory to be saved Tech Screen The Tech Racks screen gives details of the systems rack configuration The Tech Lists screen shows the contents of the lists of inputs outputs and inser...

Страница 83: ...t types of user It is intended that all set up procedures and configuration may be carried out and maintained by an engineer or technical operator Technician mode allows unrestricted access to all fea...

Страница 84: ...OFF or IN OUT status for aux send input delay or front pan controls then the reset to default function will not take effect Wild Control Push Switch Option If a Wild control has Aux send Front Pan or...

Страница 85: ...ce Assigning Synchronisation Sources Synchronisation sources are assigned by selecting an available source from the list on the left side of the screen then selecting one of the five places in the pri...

Страница 86: ...ching The Talkback and tone inputs are listed in the main section of the screen Assignment is made by selecting a source and an input and selecting Patch 3 Parameters The parameter buttons provide con...

Страница 87: ...ey have passed though the output ports External monitor input ports are selected from the lists in just the same way as channel inputs Different lists are accessed using the selection buttons The sour...

Страница 88: ...airs for patching to stereo or surround paths individual for patching to mono paths or individual with the actual rack number card slot and input shown for diagnostic purposes Assignment is made by se...

Страница 89: ...les the flashing of the APFL indicator on the Broadcast Facilities panel VCA Group Editing The editing of VCA groups is enabled and disabled using the buttons on this screen This provides protection a...

Страница 90: ...or not in any of the three states except for the On Air and Reh optos which can only override the desk buttons or not The functions provided are to cater for different requirements Therefore some com...

Страница 91: ...To make an assignment select a function left side of screen and an output right side of screen and select Patch Assignment can also be moved and removed in a similar way to port connections 3 Latch or...

Страница 92: ...ctions selected or cut up to 10 channels with Channel Cut selected With Auto Fade selected this screen allows general purpose inputs to be assigned to auto faders to allow automatic cross fading To ma...

Страница 93: ...uld receive from the serial interface port by allocating a function to it from a drop down box in the Serial Function column Only the serial functions which are enabled for the console will be availab...

Страница 94: ...link between messages from the router to be associated with one of the console s 256 labels The serial port function previously set up on the Serial Port Settings screen will now have a selection but...

Страница 95: ...gain whereby its colour will change back to grey The 1 button is used to automatically move diagonally down the grid to the next association cell and toggle its condition The action occurs out of sigh...

Страница 96: ...on is not available on MADI inputs or outputs therefore all equipment connected via MADI must be synchronised to the same source as the console Once set up MADI inputs are viewed and patched on the co...

Страница 97: ...mory Stick Secure Digital Multimedia Card USB 2 Ports 4 Rear of Unit 1 Front of Unit Ieee1394 Port 1 Front of Unit additional hardware 8 Port Serial Card Hydra Network Connection A Gigabit Ethernet po...

Страница 98: ...changes to them After a software upgrade the main set of memories will be upgraded and checked by the engineer carrying out the upgrade A new backup should then be made of these memories C Zeta Cust1...

Страница 99: ...calrec com Putting Sound in the Picture ZETA Hydra Audio Networking...

Страница 100: ...optical fibre Data is transferred using the Ethernet frame format over switched media in a network constructed from standardised structured cabling The Hydra Audio Network fabric is constructed using...

Страница 101: ...it is necessary to apply the restriction that the network must be kept private This means that it must not be made to carry any data other than that generated by the audio network Network Editor For...

Страница 102: ...terface connector on the module then locates into the appropriate connector located on the backplane To aid accurate plugging up some guide strips are located between the three interface connectors on...

Страница 103: ...me situations it may be necessary to reconfigure Hydra I O Racks to meet the requirements of each program This can be done offline and the configurations can be saved and loaded when online again The...

Страница 104: ...as two identical ports to provide network redundancy All versions are supplied with two RJ45 ports for copper connections 1000BASE T for distances up to 90 m 290 feet In addition plug in GBIC modules...

Страница 105: ...d when the signal clips at 2 dBFS or above Each output connector has a green LED to indicate that there is a route established to it from a console on the network Synchronization Units are frequency s...

Страница 106: ...edundancy All versions are supplied with two RJ45 ports for copper connections 1000BASE T for distances up to 90 m 290 feet Plug in GBIC modules allow connections with 1000BASE SX for distances up to...

Страница 107: ...s that this signal is the first AES pair on that SDI stream Optional Dolby Decoders The four way SDI de embedder has the option of having up to eight Dolby E CAT 552 decoders fitted If the optional Do...

Страница 108: ...onfiguration will be loaded onto the screen but will not take effect until Save to File Load Into Desk is selected The button flashes to indicate that the configuration on the screen is different to t...

Страница 109: ...ports can be allocated to lists along with local I O using the Options Port Lists screens These lists are saved as list configurations List Hydra I O Source Lists configurations are linked to network...

Страница 110: ...ghlighted If a port is not heart beating its indicator will light red But the device could still be in use through the other port Device Status If neither port is heart beating then the device is no l...

Страница 111: ...ed ownership of it assigned to the console In the case where several consoles share sources on the same network the console that connects to the source first will be given control ownership over that...

Страница 112: ...112ZETA Digital Broadcast Production Console...

Страница 113: ...calrec com Putting Sound in the Picture ZETA Programming Utility...

Страница 114: ...files from the PC to the mixer s processors you will first need to stop the processors running their normal program and then run a program which can receive and save the new files This is done by pre...

Страница 115: ...re the system has detected all the hub processors and successfully programmed them To verify the core processor software select SEND CORE S W To verify all the files in the secondary back up console p...

Страница 116: ...software we must first send the software files to a rack processor card Calrec unit number UN4805 8 When the rack processor boots up it will check the version of software files on the DSP card and if...

Страница 117: ...following to force the card into kernel mode You may need a colleague to assist you On the front edge of each processor 1 card is a reset button which should be pressed The processor will start to re...

Страница 118: ...118ZETA Digital Broadcast Production Console...

Страница 119: ...calrec com Putting Sound in the Picture ZETA Setup Application...

Страница 120: ...d then SETUP APPLICATION The software will initially display the console page as shown to the right To save changes select save from the file menu You will also be asked if you wish to save the settin...

Страница 121: ...nction can be changed between momentary latching and auto Auto allows the function of the button to be both momentary and latching where the function is determined by the length of time that the butto...

Страница 122: ...t is The changeover is adjusted using the slider and the settings are displayed above highlighted by the red box Aux clear On the mixer control surface is a button to clear down the auxiliary settings...

Страница 123: ...lure The pull down box below allows the users to define which drive of the card reader the memory card is fitted into PC Network connection It is possible to connect the mixer s PC to the user s compu...

Страница 124: ...evels to their own specification These settings should be correct when the mixer is delivered Analogue audio is measured in dBu and digital audio is measured in dBFS The above parameters can be adjust...

Страница 125: ...t which meter scale will be the default in the PC Main application Calrec meter setup Calrec meters are connected to the meter mothercard On the meter mothercard the connectors are labelled see pictur...

Страница 126: ...en the front left and right speakers at 6dB There also an option to enable the PFL loudspeaker output to appear on the small loudspeaker output even if it is not switched on The purpose of this is to...

Страница 127: ...CALREC Putting Sound in the Picture 127 Misc outputs The width of each misc output speaker can also be set as is done with the main and small LS outputs...

Страница 128: ...ed as stereo pairs or individual mono ports by checking or unchecking the box in the enable for stereo use column If there is any doubt as to whether an input port should be mono or stereo then it sho...

Страница 129: ...the lists set using the page below To edit a list name click on the required list from the available lists That list will then appear in the edit label box which can be changed simply by clicking on i...

Страница 130: ...ged using the page to the right To change the main monitoring of a main output select the relevant output from the pull down box Then check the relevant box for each main output format surround stereo...

Страница 131: ...calrec com Putting Sound in the Picture ZETA Appendix A Offline Editor...

Страница 132: ...e Offline Editor be sure to remove any previous versions from your machine Preparing for offline working The Calrec main application on the console PC relies on an up to date version of Java being ins...

Страница 133: ...y or any other suitable decompression program Be sure that your unzipping utility does not fail to Use Folder Names In the version shown here this is enabled with a tick in the box Once the files have...

Страница 134: ...the required bundle and click Run Frontend The application checks that the console file bundle being loaded is compatible with that version of offline editor If you have installed more than one versi...

Страница 135: ...mories can be selected for back up The path to which they will be backed up normally defaults to the one most recently used with operations involving that console Once the memory has been saved and ba...

Страница 136: ...ther screens is exactly the same as the memory selection screen Part 3 On The Console PC Select memories to load The application should automatically find the location of the memories in the bundle If...

Страница 137: ...calrec com Putting Sound in the Picture ZETA calrec com Putting Sound in the Picture Appendix B Style 1 Faders...

Страница 138: ...A group is assigned to the path A Path A is active B Path B is active The and Null LEDs illuminate when the position of the fader is not the same as the level of the audio If a VCA Master is moved aw...

Страница 139: ...calrec com Putting Sound in the Picture ZETA Appendix C Version Changes...

Страница 140: ...rround but Studio LS2 and Studio Phones can only be stereo Monitor selector buttons are allocated using the OPTIONS MON I P TB screen The selections allocated are saved with the options The Front End...

Страница 141: ...s can now be restored to a user specified location number Mem Setup Screen Screen Maximise correction for when windows taskbar is not hidden Windows XP display fixes Memory filenames include long and...

Страница 142: ...the surround loudness Thicker Peak spot Phase marker on TFT meters Longer time constant on peak spot on TFT meters External tone can be 5 1 surround Aux and External Talkback button AUTO Clear all me...

Страница 143: ...CALREC Putting Sound in the Picture 143 Notes...

Страница 144: ...926 081 Iss 16 Calrec Audio Ltd Nutclough Mill Hebden Bridge West Yorkshire England UK HX7 8EZ Tel 44 0 1422 842159 Fax 44 0 1422 845244 Email Enquiries calrec com calrec com...

Отзывы:

Нет отзывов

Бренды по названию

Популярные бренды

Загрузить еще бренды