Meng-Hao Feng

Title: Meng-Hao Feng: Audio Processing and Speech Recognition Innovations.

Introduction.

Meng-Hao Feng is an inventor based in Guangdong, China, whose patent work focuses on audio processing and speech recognition. He is associated with Xsail Technology Co., Ltd. His portfolio includes 2 patents addressing efficient audio signal processing.

Latest Patents.

Feng’s latest patents describe complementary techniques for processing audio data.

The “Fast Fourier Transform Circuit of Audio Processing Device” patent presents an FFT circuit designed to perform an N-point transform. Its memory circuit works with a butterfly operation unit that reads input data, applies twiddle factors, and writes the resulting output data back to memory. The unit uses a multiplier across multiple clock cycles, performing one multiplication per cycle, alongside adders and subtractors to complete the butterfly operations.

The “Audio Processing Device for Speech Recognition” patent describes a system that converts audio data into features for recognition. A power spectrum transfer circuit reads frequency spectrum coefficients, applies power spectrum transfer and compression, and stores the resulting compressed power parameters. A feature extraction circuit then applies mel-filtering and frequency-to-time transfer processing to generate an audio feature vector. The compressed parameters use a smaller bit width than the original frequency spectrum coefficients.

Career Highlights.

Feng’s patent work highlights methods for managing computational operations and data representation in audio systems. One invention organizes FFT calculations across clock cycles, while the other reduces parameter bit width before extracting features for speech recognition.

Collaborations.

Feng is associated with Xsail Technology Co., Ltd. His listed coworker is Chao Chen.

Conclusion.

Meng-Hao Feng’s two patents focus on efficient FFT computation and compact feature processing, contributing technical approaches to audio processing and speech recognition.