SLOU TI Information – Selective Disclosure
2
PurePath™ Smart Amp User Manual (TAS5766M/68M)
Contents
1
General Overview ............................................................................................................................ 4
1.1
Supported Smart Amp Devices ................................................................................................. 4
1.2
Migrating from Previous Versions of Smart Amp ....................................................................... 4
1.3
What is Smart Amp?.................................................................................................................. 5
1.4
Smart Amp Features ................................................................................................................. 6
1.5
Smart Amp Development Overview .......................................................................................... 7
1.6
What’s Needed .......................................................................................................................... 8
1.6.1
Obtaining TI Hardware and Software ............................................................................ 9
1.6.2
Miscellaneous Equipment ............................................................................................ 10
1.7
Things to Consider During Development ................................................................................. 11
1.7.1
Leading up to Engineering Validation Test (EVT) ........................................................ 11
1.7.2
Leading up to Design Validation Test (DVT) and Mass Production (MP) .................... 11
2
Software Installation ..................................................................................................................... 12
2.1
PurePath™ Console 3 Installation........................................................................................... 12
2.2
MATLAB Runtime Installation.................................................................................................. 12
2.3
Getting Smart Amp Apps ......................................................................................................... 13
3
Loudspeaker Characterization ..................................................................................................... 14
3.1
Characterization Process ........................................................................................................ 14
3.2
Characterization Summary Page ............................................................................................. 15
3.3
Saving a Characterization ....................................................................................................... 15
4
Smart Amp Tuning ........................................................................................................................ 16
4.1
Tuning Preparation .................................................................................................................. 17
4.2
Smart Bass Tuning .................................................................................................................. 18
4.2.1
Bass Enhancement (Low Volume Tuning) .................................................................. 19
4.2.2
Morphing Control (Mid- to High- Volume Tuning) ........................................................ 21
4.2.3
Harmonic Bass Alignment (Mid- to High- Volume Tuning) .......................................... 22
4.2.4
Excursion Tuning (Optional) ........................................................................................ 22
4.3
Smart EQ ................................................................................................................................. 23
4.4
Digital Gain Control ................................................................................................................. 26
4.5
Snapshots ............................................................................................................................... 26
4.6
Saving a Tuning ...................................................................................................................... 26
5
Hardware Design ........................................................................................................................... 27
5.1
Power Supply Rail Voltage ...................................................................................................... 28
5.2
Power Supply Current at Audio Frequencies .......................................................................... 29
5.3
Power Supply Current at Higher Frequencies ......................................................................... 31
5.4
Post-processing Considerations .............................................................................................. 31
6
Software Implementation and Verification .................................................................................. 33
6.1
Importing the Speaker Parameters into the Smart Amp Target EVM App .............................. 34
6.2
Calibrating the System Gain in the End-System ..................................................................... 35
6.3
Smart Amp Register Dump into a Header File ........................................................................ 37
6.3.1
Working with Non-Standard Configurations ................................................................. 39
6.4
Integrating the Output Header File into the End-System ......................................................... 40
6.5
Smart Amp Verification in the End-System ............................................................................. 40
6.6
Changing Device Parameters On-the-fly in the End-System .................................................. 42
7
Support ........................................................................................................................................... 43
References ............................................................................................................................................. 44
Appendix A. Supported Speaker Configuration Types ..................................................................... 45
A.1
Free Field / Single Speaker in Box .......................................................................................... 46
