Smith Realiser A16 Скачать руководство пользователя страница 1

Installing new firmware to your Realiser A16 

Rev 1.80 Dec 12 2019 

 

Updating your A16 with rev 1.80 Dec 12 

2019 is only necessary if your A16’s firmware is older. The 

current revision of your firmware is found in SETTINGS>UPDATES/ABOUT as described below in step 5. If 
an update is required please begin with 

STEP 1

 

Issues addressed in this update 

 

1)

 

The defunct 

‘Auto Mute’ feature has been changed to ‘Preset Mute’ and sets the mute 

window 

immediately following a change of preset or audio source. It can be programmed from 1 to 3 
seconds. 
 

2)

 

The HP-A and HP-B SPDIF and the Tactile outputs are now correctly muted during power up and 
when changing presets or audio source. However, for the SPDIF outputs, the method 
implemented at present simply grounds the bi-phase signal on mute. This will cause 
downstream SPDIF receivers to unlock while mute is active, which may result in minor audible 
artefacts during mute/unmute transitions. In the future we may improve on this by muting the 
PCM before to encoding, rather than the SPDIF signal itself.  
 

3)

 

A channel swap on the stereo tactile output has been fixed. 
 

4)

 

 The minimum HPEQ sweep amplitude has been reduced to avoid clipping when the headphone 
gain switches are set to medium or high gain positions. 
 

5)

 

The minimum PRIR sweep amplitude has been reduced to better accommodate high gain sound 
systems. 
 

6)

 

 If the loading of user A or user B presets fails to complete (usually as a result of a power outage 
during the loading process) the A16 will not attempt to automatically reload such presets until 
they are manually loaded via the preset menu page. This is done to avoid a lock-out situation 
whereby the unit would continually reload corrupted preset files. Reinstalling the firmware or 
restoring factory settings will not circumnavigate this requirement. If either user A or user B 
presets remain unloaded, some, or all, of the functionality of the A16 is disabled, so it is 
important to recognised when this has happened. For example, if the user B preset remains 
unloaded after power up, the solo/mute and level meters will not function for user A or user B. 
To alert users to the fact that a preset remains unloaded, 

a ‘reload’ warning

 will now appear in 

the home page for whichever preset needs attention. 
 

Содержание Realiser A16

Страница 1: ...IF signal itself 3 A channel swap on the stereo tactile output has been fixed 4 The minimum HPEQ sweep amplitude has been reduced to avoid clipping when the headphone gain switches are set to medium or high gain positions 5 The minimum PRIR sweep amplitude has been reduced to better accommodate high gain sound systems 6 If the loading of user A or user B presets fails to complete usually as a resu...

Страница 2: ...re to power loss for over 8 weeks now without issue As such we are confident that once re calibrated you will not need to repeat the operation for the foreseeable future A16 Firmware update procedure STEP 1 The new firmware for the Realiser A16 is uploaded through the micro SD card slot on the front panel First obtain a micro SD card commonly 16 GB and ensure it is formatted as FAT32 Second create...

Страница 3: ...019 and that the FPGA firmware revision is 0 30 Nov 19 2019 The new head tracker firmware 1 20 Nov 19 2019 will not be displayed here until you run Update HT firmware All other software modules are unchanged from the previous firmware update STEP 6 The firmware update is now complete However for rev 1 80 it is also necessary to run a Full factory restore to ensure all settings room and preset form...

Страница 4: ...ss BACK and then navigate to Settings and press ENTER Then navigate to System and press ENTER again Move the cursor down to Full factory restore and enable it using the ADJ key Now press Enter The full factory restore will take approximately 30 minutes to complete thereafter the A16 will automatically return to the User A Speaker Map display ...

Страница 5: ...ok data in azimuth elevation PRIR files for now Below is a menu shot of a 5 1ch PCM measurement suite that plays from a USB drive or SD card plugged into a Blu ray or equivalent player We plan to create a number of different speaker setups and look angle combinations covering stereo all the way to 9 1 6ch These video files will be made available for download from our website in due course A YouTub...

Страница 6: ... PRIR sound room should match this order The Azi Elev angles of the speakers should be edited to approximate the positions of the speakers in the real room with respect to the sweet spot When an ASYNC PRIR measurement is made the sound room location the room description and the speaker setup Azi Elev angles are all copied from the selected PRIR sound room to the PRIR file In the Apps home page sel...

Страница 7: ...re Free or Fixed When the look angles are fixed then the look angles inserted into the async PRIR file are those supplied by the measurement suite file in this example those angles are 0 30 30 20 20 degrees When the look angles are free then the angles from the head tracker are used to populate the async PRIR file ...

Страница 8: ...eet spot play the MAN noise track T1 and adjust the volume until the levels average around the white line Press enter once you are happy with the level Next play the Level Calibrate track T2 The system will automatically detect when the track begins and the LEVEL CALIBRATION banner will appear on the A16 screen as shown below This track consists of short sweeps played to each ...

Страница 9: ...ample clock to match that of the players This adjustment is required to maximize the quality of the resulting PRIR In the example below the phase locking finishes with an average drift between the A16 and the video player of 0 2 samples per second or 2 samples every 10 seconds This calibration should be undertaken in silence and the subjects head should remain stationary throughout On completion o...

Страница 10: ...an start the async PRIR measurement by playing the first look track Centre 0 T5 The subject should position their head according to the voice instructions For each look track a sweep is output to each loudspeaker in sequence Proceed to play all the remaining look tracks T6 7 T13 positioning your head according to the voice prompt ...

Страница 11: ...vel of which steadily reduces as the head tracker angle gets closer to the desired azimuth look angle This reduction in volume begins once the head tracker is within 20 degrees of the desired look azimuth angle Once the head tracker matches the look angle then the tone is muted The pilot tone for the elevation axis can be selected by pressing either the up arrow key or down arrow key In this mode ...

Страница 12: ... to deploy the head tracker it is the head tracker angles that will be inserted into the PRIR rather than those defined in the look angle menu f Pause Enable halts the PRIR measurement after each look Press OK to trigger the sweeps for the next look 3 PRIR viewer for intra measurement quality assessment The PRIR viewer is intended to provide a means of visually assessing the quality of a PRIR meas...

Страница 13: ...n studio conditions our 12 second sweep measurements can attain signal to noise ratios of around 112dB a 4 second sweep will on average be 5dB higher at 107dB Noise in a PRIR is not perceived as noise in the conventional sense but as low level reverberation As such it would be more accurate to describe the quality of the PRIR as having a peak to residual reverberation ratio of 112dB This means tha...

Страница 14: ...tions will essentially be indistinguishable from the real room Nonetheless ideal conditions are often not attained in practice and the use of 12 second sweeps can make measurement sessions exceedingly lengthy occasions For this reason we have added a denoising signal processing function that results in a virtual room reverberation decay that follows that of the room under measurement as depicted i...

Страница 15: ... are no longer overwritten 6 Raw optical only head tracking mode A raw optical head tracking mode of operation has been included in head tracker firmware rev 1 20 Nov 08 2019 This mode is similar to the A8 head tracker except that the operating range has been increased to 65 degrees The optical A8 mode must be used in conjunction with the set top similar to the regular optical stabilisation mode ...

Страница 16: ...s that fewer characters will be copied if the end of the text string is encountered first 8 New naming convention for PRIR HPEQ files written to SD When internal PRIR and HPEQ files are written to the micro SD card the following filename convention is now used For PRIR files PRIR up to the first 32 characters of the internal filename field time and date when the measurement was taken timestamp whe...

Страница 17: ...m a communication timeout between the main processor and the DSP chips running the SVS virtualization Power must be cycled in order to get things running again The vast majority of A16s in the field are not affected by this issue However for rev 1 80 firmware we have reduced the speed of this communication bus which we believe will reduce the likelihood of this issue Sometimes the A16 becomes slug...

Страница 18: ... The A16 display and the LED atop the HT report the progress of the update procedure in the following order The entire process takes about 60 seconds to complete A16 display status HT LED status 1 Loading application No change 2 Connecting to HT may be brief Red Green steady 3 Update in progress Red flashing 4 Authenticating update Red Green steady 5 HT update validated 10 flashes Green or Red or ...

Страница 19: ...firmware it flashes red 10 times after power up then it requires thermal re calibration as described below If you have not already done so please ensure you have updated to HT firmware to rev 1 20 Nov 08 2019 or later before proceeding Step 1 Unplug the head tracker and place in a freezer 18 deg C for 20 30 minutes to ensure the starting temperature of the head tracker is below 5 deg C Step 2 Have...

Страница 20: ...the LED now on steady green unplug the 2 5mm jack Now reconnect the 2 5mm jack Immediately following power up the LED will either flash green 10 times or it will flash alternating red green 5 times Both sequences imply the calibration was successful If the LED flashes red 10 times then the calibration was unsuccessful and the process must be repeated beginning from step 1 END ...

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