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Introduction

Welcome to SigCalRP calibration software for SigGenRP projects. We hope you will find this software friendly and useful. As always, we welcome your comments on how to improve our software to make it more useful for your research.

SigCalRP Overview

SigCalRP is designed to make speaker calibration and generation of SigGen normalization files a simple process. SigGen normalization files can be used to flatten non-linear frequency responses of speakers.

SigCalRP Capabilities

SigCalRP plays out a series of tones and measures the sound pressure level (SPL) from a signal that is recorded using a calibrated microphone and digitized by an A/D converter. SigCalRP will then automatically calculate a normalization file that maximizes the signal to noise ratio of the D/A converter, while avoiding clipping.

SigCalRP gives you two ways to normalize a signal:

  • normalization file in SigGenRP
  • normalization with a PA5 programmable attenuator (only use with tone signals)

Each method has inherent advantages and disadvantages and only one method of normalization should be used. One of the keys to successful calibration is knowing the limitations of hardware, and how to avoid common pitfalls. These are briefly described in this manual and more information on System 3 hardware is available in the TDT System 3 Manual.

Hardware Support

SigCalRP supports TDT's System 3 RP family of Real-Time Processors as well as the RX6, RX8 and RZ6 processors:

  • RZ6 Multi I/O Processor
  • RX6 Piranha Processor
  • RP2.1 Enhanced Real-Time Processor
  • RX8 Multi I/O Processor
  • RMx Mobile Processor

Before You Begin

Before you begin you should have a basic knowledge of:

SigGenRP concepts: you should be familiar with generating signals using the Frequency method in SigGenRP.

Your RP device: you should read the sections of the TDT System 3 Manual for your processor device. Each device has different maximal sampling rates, and may have different maximum input and output voltage levels.