TI Information – Selective Disclosure SLOU
PurePath™ Smart Amp User Manual (TAS5766M/68M)
11
1.7
Things to Consider During Development
Characterization and tuning speakers provide previously unavailable information on the
loudspeaker performance and how to improve it. Most customers find this leads to changes in
the system. These changes to improve performance can affect the timeline if this isn’t taken into
account up front.
1.7.1 Leading up to Engineering Validation Test (EVT)
Do
•
Create an acoustic mock-up of the audio system and use the
Learning Board
to start
characterization and tuning.
•
Request working/non-working prototypes of systems for use as acoustic test platforms.
•
Start characterization as early as possible.
•
Audition speakers in the acoustic mock up.
•
Work out how the Smart Amp code will be downloaded during start up and how much
time is needed to boot Smart Amp.
•
Set clear performance targets.
•
Use characterization and tuning results to work with speaker vendor to improve the
sound or performance of transducers.
Do not
•
Wait for first board build to start speaker characterization and tuning prior to EVT.
1.7.2 Leading up to Design Validation Test (DVT) and Mass Production (MP)
Do
•
Start characterization and tuning of EVT systems as early as possible.
•
Use EVT characterization and tuning results to work with speaker vendor to improve the
sound or performance of transducers.
•
Modify the EVT and DVT prototypes with external switches and wires so that the Smart
Amp EVM can be connected to it.
•
Set internal reviews of the tuning.
•
To speed up response time, aim to provide common working prototypes to TI and
speaker vendors, if necessary.
•
Work to ‘freeze’ the acoustic elements by DVT. Acoustic freezes allow adequate time for
fine tuning the sound for MP.
