SV-1 Voice Key
SV-1 Voice Key

SV-1 Voice Key

Acquire vocal reaction times  with peace of mind

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Features

SV-1 Voice Key is a device designed specifically for experiments requiring a vocal response. SV-1 monitors the participant’s voice level at all times, and when the level rises above a user-specified threshold, it reports this to the computer. SV-1 is powered by an 18 MHz microprocessor and is a 100% digital device.

Wide Application Support
Compatible with SuperLab, E-Prime, Presentation, and others (see below)
Library Support
Open source C++ and Python libraries available
Built-In I/O
Six TTL lines available for sending event markers
Battery Operated
AC adapter is optional, and yes, a battery is included

 

Extensive Software Support

Applications
SuperLab
Published by Cedrus; built-in support		 EyeLink Experiment Builder
Built-in support
E-Prime
Response pad emulates a PST Serial Response Box		 Presentation
Cedrus provides a plug-in for Presentation
PsyToolkit
Linux open source library by Dr. Gijsbert Stoet		 Inquisit
Built-in support

 

Libraries

The commands that SV-1 accepts are public. Cedrus publishes and maintains Python and C++ code libraries.

Matlab support can also be found on the Internet.

 

SKU: SV-1 Category: Tags: , ,

Installation

SV-1 uses an RS-232 serial port. A free USB-to-serial port adapter is included with every purchase. The adapter requires the installation of a USB driver.
See SV-1 Support Notes

Frequency Response

The analog frequency response is fairly flat over the range of 50Hz to 10kHz. That signal is rectified and filtered and the resulting envelope is used to trigger SV-1.

The majority of the low frequency response is determined by the delay setting, e.g. 1kHz signal has a period of 1ms, yet it needs to be relatively immune to ‘P’ and ‘B’ sounds.