HAL1x Latency Details

Ah, the classic “Latency” question. How much time does it take audio signals to travel from a given input to a given output? Keep in mind that, generally, latency only really matters when a reinforced acoustic source also exits a nearby loudspeaker. This got quite long. But it’s complete…

 

HAL4 latency is 2.2 milliseconds. See the HAL System Data All Specifications, page 50.
HAL3s is 2.39 milliseconds – analog input to analog output, see page 49.
HAL2 is 2.39 milliseconds – analog input to analog output, see page 46.

 

The rest of this discussion is about Latency in the HAL1x and its various Expansion (EXP) and RAD devices:

 

In the HAL System Data, page 6 there is a Latency drawing (below) that shows the different latencies depending on the physical path the audio takes, input to output (almost always through the DSP Core in the HAL1x).
HAL1x, EXP & RAD Transport and Conversion Latency

HAL1x, EXP & RAD Transport, and Conversion Latency

Example #1:  HAL1x analog input (through the DSP Core) out to the HAL1x analog output is one path:

Vakko A.Ş. installation in Istanbul, Turkey

One of the most prominent haute couture and high-end clothing brands in Turkey, the name Vakko associates with the utmost quality and status alongside Louis Vuitton and Armani.

Rane DR3 in Vakko, Istanbul

Rane DR3 in Vakko, Istanbul

The chairman, Mr. Cem Hakko, personally oversaw and inspected the installation and were personally very knowledgeable about everything audio. He is the founder of the first national private radio station and currently owns several TV/radio stations and production companies.

Location
Vakko’s largest store is designed to be their flagship. Situated within one of Europe’s most prestigious integrated construction projects, Zorlu Center includes residences, office buildings, hotels, a huge performance arts center and a giant high-end shopping mall. The store itself is a two-story space, around 2.700 square meters and has 27 independent rooms/halls.

Request
Provide “hi-fi” sound quality, sound pressure uniformity and full frequency spectrum delivery throughout the facility. Four zones with independent source/level control. Local auxiliary inputs for occasional events such as parties and DJ performances. Integrate with Zorlu Center’s main emergency PA system.

Equipment
1 Rane HAL1x
1 Rane HAL EXP3x
4 Rane DR3 Remotes
1 Rane RAD3
1 Rane RAD17
16 Powersoft M28Q Four Channel Power Amps
96 Polk Audio VS90RT
10 JBL Control 47 H/C In-Ceiling Loudspeakers
22 Cornered Audio C4 Specialty Satellite Loudspeaker
6 Cornered Audio C12PNC 12″ Passive Pro Subwoofers
Supra Cabling throughout
Sources are propriety WAN audio stream clients provided by the client

Personnel
Client’s Supervisor: Mr. Semsettin Kutukluoglu (Technical Manager, Power Group)
Design and Programming: Mr. Tevfik Bingel (Technical Manager, Can ProAV)
Installation: Can ProAV Team, supervised by chief tech Mr. Naim Kaya

Rane’s Turkish distributor is Radikal Ltd. in Istanbul.

Rane HAL1x and PowerSoft amps

Rane HAL1x and PowerSoft amps

Video Introduction to the 512×512 Expansion Bus for the HAL1x

HAL1x Expansion Bus - daisy-chain up to 32 EXP devices, in any combination.

HAL1x Expansion Bus – daisy-chain up to 32 EXP devices, in any combination.

I know, you were sad that you missed my PowerPoint presentation at Rane’s InfoComm Booth in Orlando a few weeks ago because you had to golf. Or was it Disney World, or drinks with your industry pals? Or was it because your boss sent those other co-workers from the Sydney office?

Either way, don’t fret. I recorded the PowerPoint presentation without the convention center background noise. Continue reading

HAL videos from InfoComm 2013

Here are two short impromptu videos from the InfoComm 2013 show floor.

The first quickly reviews the four HAL products – the HAL1 through HAL4.

HAL Evolves at InfoComm – Video #1

The second video gives a brief overview of the HAL1x’s four EXP expansion devices – the newest is the EXP7x acoustic echo canceller. It also reviews the new Web Controls feature for any HAL device. (Boy, I sure sound nervous – I had to “wing it” and without a script or the makeup department!)

HAL Evolves even more at InfoComm – Video #2

Using Fiber Media Converters with HAL1x’s Expansion Bus

TP-Link MC200CM

To exceed 100 meters (300 feet) distances between daisy-chained (yes, daisy-chained) EXP devices, you need an unmanaged, Gigabit Media Converter – either single-mode or multimode. The data pulsing through Rane’s Expansion Bus is not IP (Internet Protocol) and contains no MAC Addresses. Thus, you cannot connect it to an Ethernet network in any way. No Ethernet switches allowed. You must have a dedicated connection from the HAL1x to all subsequent EXP devices – up to 32 EXPs maximum.

Here is a very simple and inexpensive multimode fiber media converter we found on Amazon. The maker is TP-Link. Model number MC200CM. You need two of these – one at each end, of course. Plus the cable. We bought the blue cable, although, we’ve heard that the green cable sounds better? You’ll have to judge for yourself. Often terminating the cable is the biggest challenge – a favorite task for IT folks.

TP-LINK MC200CM Gigabit Media Converter

TP-LINK MC200CM Gigabit Media Converter

We’ve also successfully tested the Startech MCMGBSC055 which works great.

We do NOT recommend the Trend Net TFC-1000MGA – it does not work with our bus. This is where the “unmanaged” requirement fits in. If the device tries to inspect “Ethernet” packets to, for example, keep track of MAC Addresses that come and go, this is not compatible with Rane’s Expansion Bus. Our bus contains no MAC Addresses and no IP Addresses, nothing. Some but not all Managed converters allow you to turn off such packet inspections. If you’re working with IT networking folks, make this unmanaged requirement clear to them to avoid speed bumps on the Expansion Bus.

 

Halogen 3.0 Software and the HAL1x Expansion Bus

New Halogen 3.0 supports 5 new HAL System devices and includes the new 512 x 512 audio channel Expansion Bus.

The new Expansion Bus surpasses any and all Ethernet-based control and audio transport solutions (e.g., CobraNet, Dante, and yes, even Ethernet AVB) since it  allows HAL to do things none of these do – see this post for details. For Expansion Bus details, click here.

Meeting Talk

Continue reading