Technology

Technology

All active AIA speakers and AIA amplifiers have their own state-of-the-art, high-performance AVB network DSP control unit. This allows cinema setups to be changed on the fly and expanded as needed. Up to now, there isn’t a system with higher flexibility and future upgradeability available. The automatic synchronization of all parameters via the dynamic AIA network ensures that all users who access the system simultaneously with their computers or smartphones enjoy all always up-to-date information. Even if the speakers are connected via legacy analogue XLR cabling to the surround processor, every single speaker or amplifier can be operated centrally and in real time via the network.
 

AIA AVB network technology is raising limits.

This technology enables the system to stream audio signals without latency in real time to any number of AIA AVB loudspeakers / amplifiers in a high resolution, loss and interference-free manner. Thereby all AVB devices synchronize themselves with high precision to a master clock. This ensures that all active speakers in the system put the audio data out at exactly the same time.

A single audio sample of a 96kHz word is 10 Micro Seconds long, the one of a 48kHz word 20 Micro Seconds, the system wide synchronization of all AVB audio talker and listeners is minimum 1000 times more precise that a single sample @ 96kHz, we are talking in the single digit Nano seconds range. The inherent precision is 0.000000030 s.

Thus, even with the simultaneous use of extremely short (as from 10 cm) and extremely long (up to 100 m) cables, the transmission is completely latency-free. Cable lengths therefore no longer play a role. It is exactly this perfect timing that makes the cinematic experience so real, according to the generally accepted rule "the better the time coherence, the more precise the spatial image".

AIA Speaker Management

Imagine a passive speaker placed in a home theater where the amplifier is installed in a rack and long speaker wires usually between 10 often up to 50 meters drive the speaker all adding up to the losses, not to mention the passive crossover inside the speaker, which combined can eat sometimes up to 50% of the power.

Not only, power is destroyed, but also control due to high resistance, capacitance, and inductance. Imagine how even the best speakers suffer from this.

The active speaker design principle offers many benefits.

Not only is each transducer driven by its optimized amplifier. Furthermore, the digital electronic crossover allows splitting the audio signal into separate frequencies that are sent to individual power amplifiers, which are connected by short high-quality speaker cables to specific transducers optimized for this frequency band. Each driver-specific power amplifier sees now only a limited frequency range because the power amplifier is placed after the active crossover.

This also leads to a reduced power requirement for each amplifier channel because no power is lost in long speaker wire runs, passive crossovers or connection terminals. Our active speaker design offers up to 3dB more acoustic output power. This is not the only improvement; the transient response of the system is enhanced dramatically by compensating transducer-specific anomalies, enclosure-related effects, and overall phase-related problems not possible to adjust in passive speakers. There is left to mention the sophisticated protection circuitry of each drive unit and amplifier channel.

 

AIA Creator (For Dealers / Installers / Professionals)

With the AIA Creator software even complex installations are centrally, controlled, managed and monitored.

The AIA Creator TM software connects with all active speakers, subwoofer and external amplifier modules. They can be combined into one system controlling master and group functions as well as all millions of individual parameters in real-time. Systems can exist of single up to huge Immersive home theater or networked audio over IP systems. Each speaker comes with powerful internal audio processing and multiple preset memory functions. Those DSP functions are meant to compensate for room correction and speaker alignments. Useful functions such as level and gain adjustment, delay time, matrix routing, bass management, and speaker group voicing can be performed at different user levels. Naturally, also standard settings as X-curve calibrations or specific loudness curves can be stored in each speaker. AVB streams could be split to double up on a surround channel with different time alignment, retrieve other preset settings switching between different surround formats such as Dolby Atmos, DTSX Pro or Auro3D or change the setup for various listening positions altogether becomes easy.

 

Setup Wizard

The setup wizard makes it quick and easy to configure even large cinema systems with 32 or more channels. By clicking on a speaker field, the unassigned speaker starts to flash for identification. Pull the speaker into the appropriate position using “drag & drop”. The loudspeaker receives all necessary connectivity and preset parameters automatically. This makes a very complex process verv easy.

 

Calibration of the various loudspeakers

  • Time correction
  • Sound adjustment
  • Room acoustic correction
  • Volume control
  • Gain

 

Group function

After every single speaker has been perfectly adjusted with the Creator's extensive optimization tools, the ingenious Group function adjusts the overall sound of the home cinema.
 

Main group

The Main groups assign to all connected speakers the same changes. If, for example, a recording sounds too dull, the Main group containing all loudspeakers has their treble level raised and the fundamental range lowered. All amplifiers are switched on and off via the Main group. Often, however, only specific cinema speakers need to be changed. For example, all subwoofers are required to play louder and/or the ceiling speakers have to perform a bit more powerful, in order to let the thunderstorm seem more realistic. These changes are effected in the subgroups Front / Surround / HiSurround / Top / Sub. With the Group function even very large installations can be easily and orderly adapted to the existing room acoustics, as well as to the different requirements of different film genres, recording qualities and surround formats. The real-time control makes it possible to make all changes instantly noticeable and also to facilitate the operation.
 

 

Overview

Excellent overview of all speakers
Centralized control and monitoring of all speakers

 

Coax

AIA CCRM6 coaxial directivity plot

 

Coaxial designs offer the advantages of a single point source for a consistent acoustic centre and a symmetrical dispersion pattern resulting in homogenous reproduction with perfect transient response and highest intelligibility.

Traditional multi-way, non-coaxial speaker designs have long been the way to go in speaker applications. But they suffer from the changing distances between the listener and the speaker elements: When you move around in the coverage area, the sound is inconsistent. Even more troublesome, the crossover point between the drivers can sometimes be audible. This is especially troublesome in a cinema, where the multiple listeners are positioned in a wide horizontal and vertical array.

Coaxial systems solve this by having the drivers on the same axis, thus providing a single point source for a consistent acoustic centre.

This results in symmetry of response on both the horizontal and vertical axis, at any given angle. The crossover transition is seamless (inaudible) at all angles. (By “symmetry,” we mean that whatever response is observed at a given angle with respect to the axis, the same response will be observed at that angle in the opposite direction. The loudspeaker’s behaviour is “mirrored” about its axis.) Non-coaxial loudspeakers are not able to display this symmetry.

 

What is Ethernet AVB/Tsn?

Audio Video Bridging (AVB) was created to solve the problems that have arisen as more consumers get their audio and video content through a home network in addition to or instead of hard media such as CD, DVD and Blu-ray discs. AVB is the next generation of audio/video over Ethernet and other compatible media, such as wireless LAN. It is the common name for the set of technical standards developed by the IEEE 802.1 Audio Video Bridging Task Group and serves as an extension of the IEEE 802.1, 802.3 and 802.11 specifications used for most wired and wireless home networks. AVB combines precise, consistent time synchronization technology with automatic network traffic management that gives priority to audio and video signals on the entire network.

AVB standards add capabilities to the network providing three major enhancements:

  • Precise timing to support low-jitter media clocks and accurate synchronization of multiple audio streams;
  • A simple reservation protocol that allows an application on an endpoint device (speaker) to notify the various network elements in a path so that they can reserve the resources necessary to support a particular media stream; and
  • Queuing and forwarding rules that ensure that such a media stream will pass through the network within the delay specified by the reservation.

[Source: AVnu™ Alliance White Paper, The Power of Sync in Networked Consumer Audio]

 

Tablet based Real Time Control

Web browser based
Runs on any operating system / computer / smartphone
No installation of software required

The lightning fast command & control system that provides networked based access to each speaker ensures a glitch free integration in any home automation system. System integrators can manage and remote all parameters easily with the multiple interfaces provided such as Jason, XML or KNX.

Control of individual speakers
Volume level adjustment and room acoustics correction
 


Control of all connected speakers