Digitally Weighted Transducing Elements TRIZ Cases
- Balanced Acoustic Transducer Structure Against Gap Closure
Opposing magnets and magnetic covers keep a small transducer gap stable under external force, improving robustness and assembly.
- Multi-Coil Loudspeaker Driver With Delayed Digital Coil Signals
Clocked delay elements split modulated audio across multiple speaker coils to raise loudness without boosted power while filtering jitter.
- Multi-Coil Loudspeaker PWM Delay Driving for Higher Loudness
Delayed PWM driving across multiple loudspeaker coils boosts loudness from one compact speaker while suppressing out-of-band signals.
- Programmable PWM Controller for High-Gain Digital Audio Feedback
Multiple digital loop filters and a butterfly mixer raise audio loop gain while suppressing amplifier and output-filter non-idealities.
- Multi-Bit Δ-Σ Digital Speaker Architecture Without Analog LC Filters
Multi-bit Δ-Σ modulation, thermometer coding, and mismatch shaping remove analog LC filters to cut power, size, and distortion.
- Digital Microphone AGC Compensation for PDM Dynamic Range
Internal AGC and digital compensation vary preamplifier gain to extend PDM microphone dynamic range without extra control pins.