+v hezkz17 into the digital audio system Q&A skirt
1 For the audio signal processing of digital hearing aids, to achieve the demand analysis of hearing aid function, three kinds of speech processing algorithms are used.
Three speech processing algorithms include: automatic gain control algorithm, frequency shift algorithm and wide dynamic range compression algorithm.
By analyzing the basic principles of the three algorithms, the algorithms are simulated using MATLAB to verify the feasibility of the algorithm.
After verification, the three voice processing algorithms were implemented on the digital hearing aid platform with BES and Actions 3019 SDK software,
and optimized according to the characteristics of the BES/ Actions 3019 SDK platform.
After optimizing the algorithm, the running time of the algorithm is reduced to about half of the original, which improves the
real-time performance of the digital hearing aid.
2 Simulation and realization
3 AGC automatic gain control algorithm C language implementation