ANT - Advanced Neuro Technology: Sound level control in eevoke

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Sound level control in eevoke

eevoke Programmable Attenuator

The sound level attenuator is a precision device for controlling the audio levels over a wide frequency range. The device is fully programmable from the Cognitrace ERP, eevoke and asa-lab ERP system. Simple manual operation is also available using front panel control as well.

The attenuator allows precise control of the level of sound. It attenuates the sound level up to 120 dB for frequencies up to 100 kHz.

Control sound level from within Cognitrace

The device can be used together with the Cognitrace ERP system, the attenuation level can be set from within each of the auditory stimulation runs.

	Specifications
	Attenuation range: 0.0 to 120.0 dB Resolution: 0.1 dB Attenuation accuracy: 0.05 dB Attenuation switching time: 5 ms S/N (typical): 113 dB (20Hz to 80kHz at 9.9V)		Spectral variation: < 0.04 dB (20Hz to 80kHz) DC offset: < 10 mV Input signal range: +/-10 V peak Input impedance: 10 kOhm Output impedance: 10 Ohm
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