Huron & SNAP Documentation

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Binaural HRTF HURON TECHNICAL REFERENCE Binaural Head Related Transfer Function, a pair of Head Related Transfer Functions, for both left and right ears. Convolution Convolution is a mathematical process that takes one signal and modifies it using another signal. It is equivalent to a multiplication of two signals in the frequency domain. This process allows one signal to be used as a filter for another. Crosstalk Cancellation During Transaural playback, sounds played back through a pair of speakers will overlap, creating crosstalk which can destroy the three-dimensional sound effect. Crosstalk cancellation provides a means of reducing this effect. DRAM Dynamic Random Access Memory. DSP DSP Stands for Digital Signal Processing and is a method for processing signals. Alternately, DSP stands for a Digital Signal Processor which is a computer chip designed to quickly process large amounts of mathematical calculations. Elevation The angle from an observer to an object on a vertical plane. Values start at 0.00 for forward and increase as the object moves upwards, up to 360.00. The elevation values may also run from -90 (straight down) to +90 straight up. ERTF Environment Related Transfer Function. Similar to the HRTF however the ERTF represents the filtering of a sound source through the environment which it passes before reaching the HRTF component of an acoustic simulation system. FIR A Finite Impulse Response is an impulse response which after a period of time decays to zero. HURON TECHNICAL MANUAL PAGE 306
Order of Reflections HURON TECHNICAL REFERENCE The order of reflection is based on the number of surfaces a sound wave has reflected off before reaching the listener. Thus, first order reflections have bounced off a single surface, while third order reflections have bounced off three surfaces before reaching the listener. Frequency Domain A common way of referring to the mathematical representation of signals, where the signal is displayed in terms of its frequency components. The frequency domain representation of a signal is sometimes called a signal's spectrum. HeadTracking Is the real time process of monitoring the Angle, Elevation, Roll and Location of a listener’s head. HRTF Head Related Transfer Function, a mathematical model that characterises the filtering of a sound source before it reaches the eardrum. Impulse Response An impulse response is the way a system (such as a room) responds when presented with an impulse. An impulse response is specific to a particular system. The recorded impulse response of a system (such as those obtained using Lake Technology’s Measure tool) can be convolved with audio signals to create the impression of sound actually coming from the measured system. LakeNet Is the message protocol used by Lake applications for TCP/IP communication. External computers communicate with Huron applications using LakeNet. The LakeNet interface has been superseded by SNAP. LakeBus Provides a method for passing messages between Lake applications, along the Huron Bus. Latency Inherent delay due to signal processing. In Lake Technology applications latency is measured in samples or milliseconds. HURON TECHNICAL MANUAL PAGE 307
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Huron Technical Manual Software ver
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Copyright © 1995-2003 Lake Technol
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FCC Declaration (USA only) for Huro
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Table of Contents DISCLAIMER.......
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TABLE OF CONTENTS FEATURES ........
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TABLE OF CONTENTS OPERATION .......
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TABLE OF CONTENTS DC BLOCK.........
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TABLE OF CONTENTS THE 96KHZ EQ ....
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Introduction to the Huron Thank you
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Features Applications Note: Any ISA
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INTRODUCTION TO THE HURON • Optio
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Installing New Hardware Components
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↓ To change the ISA memory addres
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↓ Connecting with the patch panel
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Huron System Tools Huron Simulation
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General Installation ↓ To install
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Introduction to the System Tools Th
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Operation Starting ↓ To start the
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Configuration Functions Internal/Ex
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Displaying, Hiding and Terminating
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Stopping VRack ↓ To exit the VRac
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Patching ↓ To connect a pair of p
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Tip: Even if two patch points are c
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Introduction Features The IO Manage
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Adjusting Volumes ↓ To adjust the
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↓ To set a digital output to prof
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↓ To close a split window Summary
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THE SIMULATION TOOLS InsideTrak, Fa
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THE SIMULATION TOOLS • Angle chan
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Z THE SIMULATION TOOLS Figure 22
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Features Operation Object list Add
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For example: if a Source Object (ch
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Editing a BinScape Object ↓ To ed
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Features Operation The Space Array
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Adding an Object to the Space Array
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Near Field Adding B-format Input Se
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Inserting speakers ↓ To insert a
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Summary 25 20 15 Number of inputs S
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The simulated acoustic spaces used
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↓ To access the Sound Field Filte
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Directivity Factor Name d = 0.000 O
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Setting Minimum Source Distance ↓
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Adding, Inserting, Removing and Edi
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DSP Usage Summary THE SIMULATION TO
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↓ To access the Binaural Decoder
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Summary THE SIMULATION TOOLS • Th
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Starting ↓ To access MultiScape F
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Editing a Sound Object ↓ To edit
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B-format Decode Mode B-format Mode
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Editing Headphone Objects ↓ To ed
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Adding Rooms, Deleting Rooms Adding
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Summary THE SIMULATION TOOLS • Mu
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Starting ↓ To access HeadScape Se
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Configuring HeadScape ↓ To config
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Summary THE SIMULATION TOOLS • He
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Scene (List of Tracks) Track (List
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Figure 45 - Scene Properties dialog
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Manipulating Tracks ↓ To add a tr
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↓ Exporting a trajectory to a Loc
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Other Simulation Tools This sub-sec
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Locator Commands Loading and Playin
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Features Requirements The WavePlaye
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Figure 49 — The WavePlayer-2 inte
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↓ Setting the RME Hammerfall as t
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Note: The Waveplayer has now been s
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Summary OTHER SIMULATION TOOLS •
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↓ To select a microphone setting
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↓ To specify the Echo settings
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Integration under 32 bit Windows In
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Positional Commands Note: The numbe
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OTHER SIMULATION TOOLS SNAPGetRooms
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MultiScape Commands Parameter Descr
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Space Array Commands Parameter Desc
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VMixer Commands Parameter Descripti
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WavePlayer-2 Commands OTHER SIMULAT
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OTHER SIMULATION TOOLS SNAPWP2Pause
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OTHER SIMULATION TOOLS SNAPSetWaveH
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Command Reference This section desc
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WavePlayer Commands OTHER SIMULATIO
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TCP/IP Commands OTHER SIMULATION TO
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Introduction Features Overview of t
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Operation Starting and Saving ↓ T
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↓ To add a FIR filter to the Filt
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Currently selected patch point icon
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Introduction 96kHz Convolver Hardwa
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Patching the 96kHz Convolver Loadin
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Starting Note: If using measure to
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Selecting the Output File ↓ To se
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Signal Generation via MatLab Script
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Introduction 96kHz Measurement Tool
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Loading the 96kHz Measurement Tool
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; comments ( (dtype [bit16 | bit20
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Introduction Operation Starting ↓
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Dfilter Windows Interface ↓ To st
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Lvec Windows Interface ↓ To start
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Padvec Windows Interface ↓ To sta
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Permute Windows Interface ↓ To st
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Wingen Windows Interface ↓ To sta
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SigGen Windows Interface ↓ To sta
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↓ To generate a piecewise linear
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Vector Arithmetic Windows Interface
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Introduction Features Operation ↓
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Printing ↓ To print the SIM file
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Altering the Axes ↓ To display sa
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Summary THE ENGINEERING TOOLS • P
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Note: In this version of SimScale i
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Usage Simtowav Simtowav is a comman
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Hamming Window Blackman Window Harr
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Introduction to the Programming Too
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Operation Starting Lake EQ ↓ To a
Page 256 and 257: Slider Widget Toolbar Creating an E
Page 258 and 259: High Shelf Tip: All the sliders can
Page 260 and 261: Calculating the Equalisation Curve
Page 262 and 263: ↓ To lock a Slider ↓ To unlock
Page 264 and 265: Limits ↓ To alter the graph limit
Page 267 and 268: Introduction 96kHz EQ Hardware Requ
Page 269: Loading EQ 96kHz THE EQUALISATION T
Page 273 and 274: Features Operation The VMixer The V
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Page 277 and 278: Muting ↓ To mute all output chann
Page 279 and 280: Operation Starting ↓ To access th
Page 281 and 282: Operation Starting ↓ To access th
Page 283: Summary OTHER TOOLS • The BFormat
Page 286 and 287: I/O Test Patching Selecting the For
Page 288 and 289: Summary • To utilise I/O Test an
Page 291 and 292: Fixed Point Digital Audio Data Repr
Page 293: ↓ SimScale Avoiding Large Frequen
Page 296 and 297: Figure 99 — SNR of the 16 bit A/D
Page 298 and 299: Mechanical Specifications 1 3 Figur
Page 301 and 302: Audio Input Levels Managing Audio S
Page 303 and 304: HURON TECHNICAL REFERENCE • In ge
Page 305: Angle Channels Glossary Angle chann
Page 309: SNR (Signal to Noise Ratio) HURON T
Page 312: ↓ To specify an auto-logon domain
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