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The TalkBox is an acoustic signal generator for speech intelligibility measurements in evacuation and announcement systems, as well as for level alignment of teleconference and other audio systems. It allows for the complete end-to-end evaluation of the speech intelligibility STI-PA from the talker's microphone to the listener's ears. The TalkBox provides the test signal simulating a human talker at 60 dBA @ 1 meter according to IEC 60268-16.

The TalkBox features human head-like dimensions and is based on a solid-state-generator. It replays the STI-PA test signal at the precisely correct playback sampling rate, also ensuring best performance through the internal amplifier and the precision loudspeaker. A variety of supplied or user-defined test signals may be precisely output for different alignment applications.

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Please Note: Whilst the Exel Line range is calibrated at the factory, they are not supplied with a calibration certificate as standard. If you require a full 12 months certificate, the unit will be ordered from the NTi factory and not supplied from stock.

Technical Overview
arrow Waveforms: Up to 15 different signals
Waveforms can be added/changed by the user
Factory signal set:
   NTi STI-PA test signal White noise, Pink noise
   Delay time measurement test chirp, Sine 1KHz
arrow Line output: Balanced XLR
Ouptput level +4dBu (fixed)
Impedance: 100 Ohm balanced, 50 Ohm unbalanced
Phantom power resistant
arrow Line input: Balanced XLR
Impedance: 40 kOhm balanced, 20kOhm unbalanced
arrow CF-Card: 128 MB included, FAT32 formatted
Wave file format: 16 bit, 44.1 kHz mono
arrow Acoustical flatness: ±1dB (in axis, 100 Hz – 10 kHz)
arrow Acoustical output level:   Standard: 60 dBA / 1M to IEC60268-16
Alternate: 70 dBA / 1M for Lombard Effect simulation
arrow Power supply: 8 - 15 vDC, 10W
External switching power supply included
arrow External mute: 3.5mm jack (floating switch required)
arrow Dimensions (LxWxH): 150 x 150 x 175 mm (5.9 x 5.9 x 6.9 inch)
arrow Weight: 3.5 kg
arrow Temperature: 0°C to + 45°C (32°F to 113°F)
Description      Each:
Price Qty
NMI TBNTi Audio Exel Line TalkBox STI-PA signal source (600 000 085)£1540.18
NMI TBCALCalibration certificate for TalkBox (600 000 018)£64.29
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