AP525 Test Platform Overview for Audio Measurements
Guide to AP525 hardware interfaces and AP software (Bench and Sequence Mode) with workflow for automated audio testing and report generation using TLSR9518A DUT.
Consumer Electronics
STM32 Buzzer Music Playback Example
Guide to driving a passive buzzer with STM32 using STM32CubeIDE: configure clock, TIM7 microsecond delay, toggle PB5 and iterate tone/music arrays for frequency and duration.
How Many NVRs Can Add a Single Camera?
Guidelines for adding the same camera to multiple NVRs: stream limits, switch bandwidth, configuration conflicts, and using RTSP custom add for reliable multi-recorder access.
Difference Between High-Resolution and Standard Audio
Examines why high-resolution audio is inaudible on conventional equipment and how solid-state MEMS speakers reveal more detail via faster response and flat phase.
LM4766 Audio Power Amplifier Circuit
Technical overview of the LM4766 dual-channel audio power amplifier, detailing protection features, performance (40 W per channel, low THD+N), supply range and applications.
Embedded Audio Processing Workflow
Technical overview of embedded audio processing and format conversion, covering PCM and G.711 paths, AAC/ADTS structure and fdk-aac encoding/porting guidance.
SCTF Low Phase-Noise Clock Selection for Digital Audio
SCTF low phase-noise clock oscillator overview for digital audio systems: CN SMD packages, common audio frequencies, high stability, low jitter and phase-noise specifications.
LM4766 Specifications and Applications
LM4766 dual-channel audio power amplifier: 40W per channel, low distortion (≤0.1%), wide ±20–±35V supply range, 9 V/μs slew rate for high-fidelity designs.
Moving-Coil Loudspeaker Design and Structure
Technical overview of moving-coil loudspeakers: operation, cross-section components (voice coil, cone, suspension) and design trade-offs like resonance and Doppler.
Speech Recognition: Principles and Workflow
Comprehensive technical overview of speech recognition covering history, preprocessing, MFCC feature extraction, acoustic models (GMM/HMM, DNN), language models, and decoding.
Offline Voice Recognition with PT32Z192 Cortex-M3 MCU
Offline voice recognition solution on PT32Z192 Cortex-M3 MCU: hardware specs, high-sensitivity mic, TFT UI, playback options (voice chip or PWM), AI recognition library, schematics.
School Auditorium Sound System Optimization
Technical overview of school auditorium sound system design, covering components, loudspeaker selection, signal processing, amplification, tuning, installation, and maintenance.
