Audio Metering for Game Developers Audio Metering for
- Slides: 58
Audio Metering for Game Developers
Audio Metering for Game Developers Jason Cobb Game Audio Design GL 33 k The Sound Department – Austin
Game Audio Metering Room Survey
Game Audio Metering Room Survey Who uses audio meters to examine game sound output levels on a regular basis?
Game Audio Metering Room Survey Who uses audio meters to examine game sound output levels on a regular basis? Who considered metering but has not set it up?
Game Audio Metering Room Survey Who uses audio meters to examine game sound output levels on a regular basis? Who considered metering but has not set it up? Who is unfamiliar with audio metering?
Audio Meters are a Fixed Frame of Reference Playback systems color sound output Listening environments are different Amplification is variable Listener fatigue changes perception of loudness Individuals hear things differently
Audio Meters Provide Useful Information Warnings for loudness issues and signal clipping Visualization of levels and spectral response Practical metrics for discussion of mix changes and audio modulation Coordinate sound teams and inform other disciplines
Game Audio Metering Potential Users Audio Directors and Mix Engineers Established tools for audio production Stay on top of the mix Loudness consistency across game levels implemented by a team
Game Audio Metering Potential Users Audio Directors and Mix Engineers Established tools for audio production Stay on top of the mix Loudness consistency across game levels implemented by a team Audio Programmers and Designers Check reference of sounds implemented Log audible result of audio modulations Debug audio engine errors
Game Audio Metering Potential Users Quality Assurance Identify cases of over-modulation Gain insight into audio bugs Verify adherence to technical standards
Game Audio Metering Potential Users Quality Assurance Identify cases of over-modulation Gain insight into audio bugs Verify adherence to technical standards Production and Marketing Avoid distorted game capture audio Reminder to sometimes mute channels in game captures (Record only sound effects in game captures and add voice and music in post)
Audio Meter Types Peak Program (PPM) Identify signal peaks Root Mean Squared (RMS) Identify average loudness Frequency Weighted Loudness (VU, CBS, ITU BS. 1770) Illustrate loudness in context of hearing
Audio Meter Types Signal Phase Comparison Illustrate differences between channels Multiband Filtered Illustrate bands of frequency response Spectral Transform Illustrate signal frequency response Time graphs and statistics View level history
Game Audio Meter Calibration test tones in game Noise, Sine, Sweep, Transient Game audio channel options at full volume Or an agreed-upon calibration volume No attenuation between game output and meters Gain and stereo balance at unity
Game Audio Meter Calibration View level of test tones in meters Verify levels match reference values Adjust gain trim to compensate Offset any direct current Set meter type, scale, zero, and ballistics
Game Audio Sources Game engine or audio middleware self-metering Digital stereo and matrix surround Digital encoded surround sound Analog mono / stereo / surround Analog matrix surround sound
Audio Metering Setup Options Developers workstation sound card input Virtual audio cable Input meter routing in session of primary audio workstation Spare audio workstation Mobile recording laptop rig
Digital Audio Connections Digital Audio Optical Splitter Passive device Ground isolation
Digital Audio Connections
Digital Audio Connections
Digital Audio Connections Digital Audio Coaxial 75 Ohm passive video splitter Digital Audio Router Handle multiple sources Mixed-type connections
Analog Audio Connections Consumer Stereo Audio Splitter RCA plugs with taps RCA Y-splitters and cables Impedance adapters Consumer Headphone Connections Stereo mini-jack splitters Inline volume trim Micro-jack adapters
Analog Audio Connections
Analog Audio Connections
Audio Metering Software Orban Loudness Meter
Audio Metering Software Audiofile Engineering Spectre
Audio Metering Software Programmable Analysis Software Spectrum Analyzer Pro
Audio Metering Software Pinguin Audio Meter Pro
Audio Metering Software Metric Halo Spectra. Foo
Audio Metering Plug-Ins Roger Nichols Digital Inspector
Audio Metering Plug-Ins Roger Nichols Digital Inspector XL
Audio Metering Plug-Ins Flux Stereo Tool
Audio Metering Plug-Ins Digidesign Trillium Lane Labs Master. Meter
Audio Metering Plug-Ins Digidesign Phase. Scope and Surround. Scope
Audio Metering Plug-Ins Digidesign Dolby Surround Tools
Audio Metering Plug-Ins Neyrinck Sound. Code
Audio Metering Plug-Ins Waves PAZ Analyzer
Audio Metering Plug-Ins Waves Dorrough Stereo and 360
Audio Metering Plug-Ins Nugen Audio Visualizer
Audio Metering Plug-Ins Blue Cat Audio Analysis Pack
Audio Metering Plug-Ins Bias Reveal
Audio Metering Plug-Ins TC Electronic LM 5 Loudness Radar
Game Audio Metering Takeaways
Game Audio Metering Takeaways Use as a starting point for sound implementation volume levels
Game Audio Metering Takeaways Use as a starting point for sound implementation volume levels Coordinate work of multiple implementers
Game Audio Metering Takeaways Use as a starting point for sound implementation volume levels Coordinate work of multiple implementers Keep in view and mix as you implement
Game Audio Metering Takeaways Use as a starting point for sound implementation volume levels Coordinate work of multiple implementers Keep in view and mix as you implement Minimize mixing at the end of the project
Game Audio Metering Takeaways Use optical digital audio if possible
Game Audio Metering Takeaways Use optical digital audio if possible Use analog audio when limited by gear or situation
Game Audio Metering Takeaways Use optical digital audio if possible Use analog audio when limited by gear or situation Calibration signals in the dev game
Game Audio Metering Takeaways Use optical digital audio if possible Use analog audio when limited by gear or situation Calibration signals in the dev game Verify meters are calibrated
Game Audio Metering Takeaways Use optical digital audio if possible Use analog audio when limited by gear or situation Calibration signals in the dev game Verify meters are calibrated Instruct team how to use audio meters
Game Audio Metering Takeaways Audio meters are useful for playback system calibration but are not a substitute for it
Game Audio Metering Takeaways Audio meters are useful for playback system calibration but are not a substitute for it Audio meters are not hard and once they are set-up, you will find yourself using them more often
Game Audio Metering Takeaways Audio meters are useful for playback system calibration but are not a substitute for it Audio meters are not hard and once they are set-up, you will find yourself using them more often Familiarity with sound level properties is enhanced by regular use of audio meters
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