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AERO.mobile

Mobile Audio/Loudness Manager

User Guide

Summary of Contents for AERO.mobile

Page 1: ...AERO mobile Mobile Audio Loudness Manager User Guide...

Page 2: ......

Page 3: ...AERO mobile Mobile Audio Loudness Manager User Guide Release Date November 2010 Software Version 0 1 13 and later Linear Acoustic Inc Phone 717 735 3611 FAX 717 735 3612 Web www LinearAcoustic com...

Page 4: ...RESULT IN A CHARGE FOR NEW SHIPPING MATERIALS LIMITATION OF PERIOD OF ACTION ON CONTRACT No action regardless of form arising out of the transactions under this agreement may be brought by buyer its s...

Page 5: ...1 Unpacking and Inspection 9 2 2 Installation 9 2 3 Rear Panel 10 2 3 1 Connection Ports 10 2 4 Quick Setup Notes 11 Chapter 3 Applications 17 3 1 Mobile DTV Only Application 17 3 2 Standard plus Mob...

Page 6: ...nu 27 Chapter 5 Presets and Processing 31 5 1 Description of Factory Presets Adjustments 31 5 1 1 Processing Structure 32 5 1 2 Adjusting Processing 33 5 1 3 Linear Acoustic Mobilizer Settings 39 Chap...

Page 7: ...set to MB1 one Mobilizer engine 14 2 4 MB Type set to MB1 MB2 Stereo 15 3 1 AERO mobile general application 18 3 2 AERO mobile for mobile DTV and AERO air for standard DTV 19 4 1 Main Audio I O Meters...

Page 8: ...Linear Acoustic AERO mobile User Guide viii...

Page 9: ...lay bypass for fail safe operation Optional Dual redundant power supplies Optional dual stereo Dolby Pulse HE AAC encoder 1 1 Principles of Operation The AERO mobile is built on the foundation of the...

Page 10: ...seband audio and outputs a signal for encoding a good installa tion point would be very close to the Mobile DTV encoder as shown below in Figure 1 2 AERO mobile Block Diagram Metadata Input LtRt LoRo...

Page 11: ...n Figure 1 3 it can be installed near this unit Figure 1 3 Installation of AERO mobile for Mobile DTV and AERO air for main DTV programming Existing Services Encoding Multiplexing and Modulation Mobil...

Page 12: ...nother when the unit is finished re booting Upgrades are accomplished via an Ethernet connection and a software upgrade package supplied by the factory WARNING Do not connect any devices to the USB co...

Page 13: ...country of order this manual and a handy black pen Warranty information Please fill out and return the warranty card to Linear Acoustic to ensure your software and documentation are kept up to date 2...

Page 14: ...NC metadata extraction per SMPTE 2020 methods A and B is also supported GPI O Connect dry contact closures here to control upmixing and EAS on off Note that GPI functions require held closures for the...

Page 15: ...1 2 5 6 Secondary CC2 program or downmixed main program output 7 8 utility duplicate of 5 6 2 4 Quick Setup Notes The Linear Acoustic AERO mobile is configured at the factory and is ready to go on the...

Page 16: ...est way to learn the processor is to explore the different settings with audio applied and monitored There are several factory presets to support many different tastes Some presets may not sound much...

Page 17: ...Input to MB1 Input 5 6 Left surround Right surround LsRs Input to MB1 Input 7 8 Alternate Input EAS MD Input LtRt LoRo Downmix Aeromax Loudness DRC 2 0 2 Aeromax Loudness DRC 2 0 1 GPI In Alt HD SD S...

Page 18: ...ry MB1 Input Input 3 4 Not used Input 5 6 Secondary MB2 Input Input 7 8 Alternate Input EAS MD Input LtRt LoRo Downmix Aeromax Loudness DRC 2 0 2 Aeromax Loudness DRC 2 0 1 GPI In HD SD SDI Demux SDI...

Page 19: ...ters The best way to learn the processor is to explore the different settings with audio applied and monitored There are several factory presets to support many different tastes Some presets may not s...

Page 20: ...mobile We suggest checking drawings and physical installa tions to make sure that this old gear is removed It may seem counter intuitive but overprocessing does not allow more audio to fit in a small...

Page 21: ...n alternate and main audio so this secondary path always has audio pres ent This feature saves the cost and complexity of several additional external units that would be required to perform this funct...

Page 22: ...o program into mono This can be helpful for dialogue only programs by allowing the mobile audio encoder to be run at a lower bitrate The second processor can also be commanded to switch the main progr...

Page 23: ...encoding for the pri mary DTV services while the AERO mobile will take the same source audio and create a version appropriate for Mobile DTV transmission It is also possible to use the second output t...

Page 24: ...Linear Acoustic AERO mobile User Guide Applications 20 This Page Is Not Blank but is useful for notes...

Page 25: ...func tionality Signal presence meters for each audio channel applied to the processing engines are followed by outputs from the processing and downmix engines The left display shows audio present on t...

Page 26: ...ive preset The screen below shows GPI 1 set for ALT GPI 2 set for Coding Mode 2 0 i e Mute inputs 3 6 GPI 3 set to select Secondary Preset and GPI 4 set to select Primary Preset Lower case indicates t...

Page 27: ...SP DSP 2 Version V2 2 0 DSP 2 TX Errors Shows transmission errors between micro and DSP1 DSP 2 Rx Errors Shows receive errors between micro and DSP 4 3 Setup Menu Entering the Setup menu gives access...

Page 28: ...of above Mode 2 0 Off On When active mutes Inputs 3 6 This is done if the source audio is definitely 2 channels and prevents extraneous signals that might be present on Inputs 3 6 from being added to...

Page 29: ...I signal through the AERO mobile untouched Note this does not affect de embedding which is active at all times WARNING If SDI Embed is enabled Clock Source should be set to SDI 4 4 9 SDI Out Destinati...

Page 30: ...es what will be controlled when the selected metadata program has an audio coding mode acmod of 2 0 Selections include Chan Mode 2 0 Mutes Inputs 3 6 as described above or None Pri Sec Dialnorm Specif...

Page 31: ...nmixed input signals directly through to 5 6 and 7 8 Mono Sums outputs 1 2 and presents them as dual mono Mono Lo Sends Lo output of downmix as dual mono Mono Ro Sends Ro output of downmix as dual mon...

Page 32: ...Linear Acoustic AERO mobile User Guide Detailed Operation 28 NOTES...

Page 33: ...de Stereo Mono Ch7 Ch8 SDI Embed Audio Disable GPI Control Disable B1 B5 Attack 0 150 B1 B5 Attack 0 150 B1 B5 Attack 0 150 GPI 1 Preset TV_5B_Gen VANC MD is Async Off Sec Dialnorm Do Not Apply Downmi...

Page 34: ...2 12 dB to 12 dB 0 Band 3 12 dB to 12 dB 0 Band 4 12 dB to 12 dB 0 Adj Final Down To View Output Lim Drv 6 dB 1 50 dB Master Output 11 0 dB Progressive Rlse 0 100 50 B1 B5 AGC Attack 0 100 B1 B5 Atta...

Page 35: ...or use by all presets is given Note that not all presets use every feature Please note factory presets CAN be over written Default values are given at the end of this chapter MOBI 5B GEN This is the d...

Page 36: ...s to all adjustable parameters is provided Be careful with this power as most all settings interact with each other sometimes in ways that might not be immediately audible Below is a drawing showing t...

Page 37: ...90 dB 31 dB Ratio 1 1 to Inf 1 12 1 1 AGC Range 0 to 36 dB 25 00 dB Adj Parametric Eq Down To View Band 1 Freq 20 Hz 20 kHz Band 1 Level 12 Db 0dB Adj Multiband AGC Down To View Ratio 1 1 to Inf 1 2...

Page 38: ...uction or expansion as its actions will be more audible as with all wideband gain processors As a slow gain rider its actions are nearly inaudible thanks to the multiband processing that follows it Th...

Page 39: ...d Adjustable parameters are Ratio 1 0 1 Inf 1 default 3 0 1 B1 B5 Inf 1 Above Thresh Enabled Disabled AGC automatically increases ratio to Infinity 1 once a signal exceeds the threshold set below allo...

Page 40: ...s very quickly limited acting more like a clipper without the artifacts This helps maintain a tight bass sound Multiband EQ This is the section where each of the processing bands is summed and where o...

Page 41: ...e output level for the current preset Can be used to match the mea sured loudness of one preset to another This is useful as more aggressive pre sets will measure differently from less aggressive vers...

Page 42: ...nf 1 Disable Disable Disable Disable Disable Disable B1 AGC Attack 22 22 25 22 46 46 B2 AGC Attack 32 32 40 43 88 88 B3 AGC Attack 42 42 42 43 88 88 B4 AGC Attack 62 62 62 55 88 88 B5 AGC Attack 75 75...

Page 43: ...it is all the wrong audio Think about the common situation of having a conversation in a noisy environment the last thing you want to do is to turn down the loudest parts and turn up the softest part...

Page 44: ...eshold for a limiter that constrains the amount of non phase coherent audio like crowd swells from overwhelming the phase coherent sounds like dialogue Default Setting 10 50 dB Clarity LF MF HF Provid...

Page 45: ...access the I O menu and enable Master Bypass If you are unsure of what is happening in a particular system simplifying the signal path is a good start and will help isolate problems quickly 6 1 1 Uni...

Page 46: ...m Tandberg a special reference signal is generated in the multiplexer and it needs to be connected back to the Dolby Digital AC 3 encoder and used as its reference i e set the encoder to REF IN SRC On...

Page 47: ...ng in bypass Metadata Input Output RS 485 9 pin female D connector on rear panel GPIO Port TTL level 25 pin female D connector Ethernet Port RJ 45 female jack connector SDI I O HD SD SDI I O Audio can...

Page 48: ...through cable should be used Table 7 4 Metadata I O Port Pinout Ethernet Port Standard RJ 45 female connector that supports 10 or 100BASE T Operating Temperature 0o C to 50o C Non Operating Temperatur...

Page 49: ...PI O Parallel Control Port TTL level controls active Low The 5 V output for external GPO indicators is limited by a self resetting fuse Table 7 5 GPI O Port Pinout Pin Connection 1 GPI 1 2 GPI 2 3 GPI...

Page 50: ...Linear Acoustic AERO mobile User Guide Specifications 46 This page is not blank...

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