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The TalkBox features human head-like dimensions and is based on a solid-state-generator. It replays the STIPA test signal at the precisely equalized frequency response, also ensuring best performance through the internal amplifier and the precision loudspeaker. A variety of supplied or user-defined test signals may be used for different alignment applications.Unmatched Quality
The TalkBox has been designed to latest quality standards for reliable measurements results. It offers unmatched signal purity with a minimum distortion over the complete frequency range from 100 Hz to 10 kHz. This ensures the repeatable and precise verification of the speech intelligibility STI.
The NTi Audio TalkBox includes a high-precision broadband loudspeaker, with characteristic little distortion even at low frequencies. Perfect flatness of ±1 dB over the relevant frequency range and highest quality requirements are guaranteed by an individual equalization and calibration using advanced FIR filtering and DSP technology. The radiation characteristic corresponds broadly to the human mouth as defined in the ITU-T P.51 standard.
The IEC 60268-16 standard specifies a sound pressure level for a speaker simulator of 60 dBA at a distance of 1 meter. The TalkBox output is fixed at these levels to comply with this standard. Thus the TalkBox has no volume control.
In an emergency situation, the person making the announcements will tend to talk louder. This is known as the Lombard Effect. The system must be tested at this increased level. All TalkBox STIPA-related signals are thus additionally available at a level of 70 dBA at a distance of 1 meter.
Using the balanced line output, the TalkBox can also be operated as an audio signal generator. Frequency deviations while sampling - a dangerous trap when using portable CD players for STIPA measurements - are completely eliminated.Further, any external signal can be connected to the system using the balanced line input. The applied signal is seamlessly looped to the line output and simultaneously processed in the internal DSP in real-time and played through the speaker.
The TalkBox also generates additional test signals: a reference spoken sentence, white noise, pink noise, 1 kHz sine wave and the chirp for delay time measurement. Custom-designed signals may be loaded onto the CF Card and are seamlessly looped.
Typically the NTi Audio TalkBox is positioned on a conventional mic stand in front of the talker's microphone; exactly at the position of the actual talking person during the announcements. For this purpose there is a tripod mount on the bottom plate of the TalkBox.
For measuring speech intelligibility in large buildings the remote mute functionality of the TalkBox is of great help. Any external switching device may be connected to the mute input, allowing e.g. a mobile phone to control ON/OFF functionality. Thus the STIPA test signal might be muted between measurements.
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Orders placed though the Amber Technology website are despatched from our Sydney warehouse. Orders placed before 1.00pm Sydney time (for items in stock) will generally be shipped on the same day.
We ship using Startrack Express. We deliver Australia-wide to residential, business and PO box addresses.
Shipping is free for all orders over $275 including GST (effective 1 March 2018). There is a $22 (including GST) shipping and handling charge for all orders under $275 including GST.
You can track your shipment through the web sites of our couriers:
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Tracking numbers for your order can be found in the order history section of your dashboard. If you have any questions regarding shipping, please contact us.
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
All items purchased from Amber Technology will be covered under warranty. The duration and terms of this warranty are specified by the manufacturer unless otherwise stated. Warranty information is available on the individual product listings on this site.
Refurbished items will include a 12 month warranty unless otherwise stated.Please contact us if you have received an item which has been damaged in transit or is otherwise not working correctly when you receive it. Subject to availability, we will arrange for a replacement item to be despatched and for the faulty item to be returned to us.
Amber Technology maintains a nation-wide network of carefully selected Authorised Service Agents to ensure that you are never far from convenient, expert technical and service support. If your item develops a problem and requires servicing under warranty, please contact your local Authorised Service Agent.
The availability of stock is communicated via the indicator of each product listing page. "Available" means that reasonable stock is in our warehouse, ready for immediate shipment. "Limited Stock" means that we have only a small number of items in stock. "Out of Stock" means this item is currently unavailable for immediate shipment - orders placed for ‘Out of Stock’ items will be fulfilled as soon as replacement stock arrives.
"Special Order” items are products that are not generally kept in stock in Australia. Lead times for Special Order items vary depending on country of origin, manufacturer’s stock levels, factory production schedules and/or incoming shipment transit times. Please contact us for an estimate as to the likely lead time. Please note that finalized sales for special order items cannot be cancelled.
If refurbished stock is available, this will be shown on the summary page for the product. If a product listing only allows you to choose refurbished stock, we are not holding new stock and we can no longer obtain new stock.
Refurbished items are always in perfect working order and will include all accessories. Refurbished items are may
Refurbished items include a 12-Month warranty unless otherwise stated.
Please visit the Get Support page to find a service agent, log a service ticket, or ask a technical question about your product.
Please contact us if you have received an item which has been damaged in transit or is otherwise not working correctly when you receive it. Subject to availability, we will arrange for a replacement item to be despatched and for the faulty item to be returned to us.