Systems Design Review

Final PresentationGroup P14345Team Lead: William SenderJeffrey AuclairBryan Beatrez Michael Ferry

#Problem Statement-Audio amplitude control for motion picture, music, and broacast applications.

-Maintain the quality and dynamics of the sound.

-Improve flexibility while maintaining audio quality.

-Maintain usability that of previous devices.#DeliverablesA working prototypeAll design files (ex/ source code and libraries)Documentation with board schematics and board artworkTest results verifying proper functionality#Customer NeedsCust. Req.ImportanceDescriptionNotesCR19Auto mode, user defines desired output, system keeps output consistentFunctionality not developed.CR29Manual mode, user can modify compression through user interfaceValidated & VerifiedCR39User interface based off of current state devicesYesCR49Signal output quality: low noise, low distortion, no clipping10 people have verifiedCR59Audio output quality: Comfortable range and volume10 people have verifiedCR692 audio channels, stereo capabilityCurrently only running mono. Limited by code compile size.CR79Ability to switch output between the device output and device inputValidated & VerifiedCR83Ability to switch between stereo/monoCurrently only running mono. Limited by code compile size.CR93Ability to monitor gain-reduction in real timeMetering works on the fourth display line.CR103Ability to save/load settingsFunctionality not developed.CR111"look ahead" abilityFunctionality not developed.#Engineering RequirementsEngineering RequirementMeasureGoalAllowable DeviationNotesThresholddBu-20 to +15-25 to +18Confirmed with testing.Attackms0.1 to 301 to 60Confirmed with testing.Ratio2:1 to 20:12:1 to 20:1Confirmed with testing.Releases0.1 to 1.20.1 to 2Confirmed with testing.Make-Up GaindB-5 to +12-3 to +6Distorn (THD)%50>30CrosstalkdB5kConfirmed with testing (22k).Output ImpedanceOhms