Transcript AGDC07
HDR Audio Adaptive mixing in Frostbite David Möllerstedt, Head of Audio Stefan Standberg, Audio director Battlefield: Bad Company™ EA – DICE audio<@>dice.se Agenda • • • • • • • Battlefield Heritage HDR Audio Principle Focused Sound Design Frostbite™ Battlefield: Bad Company™ Runtime Demo Summary Questions Battlefield heritage • Sandbox experience, gameplay driven design, open ended, free roaming, multiplayer online • All out destruction in Battlefield: Bad Company™ increasing the challenge • Other alternatives; duckers, snapshot mixers, scene defines, don’t solve the problem HDR Audio Principle • Measure loudness at Listener position – Scale all sound sources accordingly • Handle the dynamic range from the quietest sound noticeable to the pain threshold, Some 130 dB • Functions similar to HDR lighting Hdr off example 140db 120db 55db 35 db 30db 12db 0 db Time Hdr on example 140db 120db 55db 35 db 30db 12db 0 db Masked Time Focused Sound Design •Cinematic approach Focused Sound Design Focused Sound Design •Prioritize, instead of compete for dynamic range •Play the right sounds, not all sounds •Vital to the sandbox architecture of Battlefield Frostbite™ • DICE’s game engine Frostbite™ • Tight system integration, audio one of the core components • Destruction integral part of the engine • Developed for Battlefield: Bad Company™and to be used by future projects at DICE Frostbite™ Frostbite™ Battlefield: Bad Company™ Loudness • HDR Audio functions as a culling algorithm • This is a positive side effect • Priority is set according to loudness, loudness is a good approximation for ‘importance’ especially in FPS game • We set loudness values to create any desired effect Not Compression • HDR Audio does not have a specific “sound” • HDR Audio is not compression, all sounds are played uncompressed • The effect and thus the sound is sometimes similar • HDR Audio works on logical loudness values and does not touch the actual audio waveform Boundaries • Not the Silver Bullet • Special situations still need attention • First Person focus Summary “HDR Audio Make Loud sounds sound loud, and quieter sounds sound as loud as loud sounds” Summary • Automatic mixing solution • Handle Infinitive dynamic range • Transparent sound Sounds Interesting? • We are always looking for talented and devoted persons to join our audio teams • jobs.ea.com Questions • Who has the first question? Thank You Please, fill in the questionnaire