Ann: AGM Presentation, page-50

In the presentation they say they expect to get 70db based on the modelling but they need to prove that.

2020 – High Quality Sound
• Music playback – simplified structure.
• Demonstrated low frequencies (down to 100Hz) and sound quality.
• SPL <50dB @ 1m (SPL= Sound Pressure Level – “loudness”).
2021-Q1-2 – Improved Acoustic Performance
• 5dB SPL boost.
• Packaged chip plays out of the clean room.
• Multiple chips – 4 chips play together. 80 chips later this year.
2021-Q3-4 – Improved Acoustic Performance
• Optimization through simulation – currently SPL >70dB @ 1m (additional 10-15dB SPL)
• Product Fabrication later this year