DSP Audio Processing Engineer Basic Knowledge Quiz (20 Questions)
    1,What is the core role of DSP in audio processing?
    2,What are the two key steps involved in the digitization of audio signals?
    3. What is the definition of the sampling rate? What are the commonly used audio sampling rates?
    4. What influence does the quantization bit number have on the dynamic range of an audio signal?
    5. What are the main uses of Fourier transform in audio processing?
    6. What is PCM encoding? Which basic format of digital audio is it?
    7. What types can audio filters be classified into based on their frequency response? (At least three types
    8. What is the signal-to-noise ratio? How is it calculated in digital audio?
    9. What is the function of dynamic range compression?
    10. What is the basic principle of a delay effect device?
    11. What is the function of the Audio Bus?
    12. What is the sampling theorem? What problems will violation lead to?
    13. What physical phenomenon of sound does the reverb effector simulate?
    14,What is the core difference between IIR filters and FIR filters?
    15. How does the phase of an audio signal affect stereo positioning?
    16. What is bit rate? What is its relationship with the size of the audio file?
    17. What scenarios does echo cancellation technology mainly solve?
    18. What is the working principle of an audio equalizer (EQ)?
    19,What are the main differences between AES/EBU and S/PDIF in digital audio interfaces?
    20. What is audio Dither? What is its function?

DSP Audio Processing Engineer Basic Technical Foundation Test Questions (20 Questions)
    1.How to design a second-order low-pass filter for 100Hz? Which key parameters need to be determined?
   2. How to avoid spectral aliasing when converting sampling rates?
     3. How do the threshold, ratio, and attack time parameters of the dynamic range compressor affect the processing effect?
    4. What practical advantages does the linear phase characteristic of FIR filters have in audio processing?
    5. How to achieve spectral analysis of audio signals using FFT? What errors should be noted?
    6. What are the selection principles for reference signals when designing an adaptive noise cancellation algorithm?
     7. What are the technical methods for delay alignment of multi-channel audio?
    8. How to achieve frequency response compensation for speakers through DSP?
    9. What is the core role of the psychoacoustic model in audio compression coding (such as MP3)?
    10. How to determine the stability of an IIR filter? What should be noted during the design process?
    11. How to calculate the short-term energy of an audio signal? In which scenarios can it be used?
    12. What spatial positioning problems does the DSP algorithm for converting stereo to surround sound need to solve?
    13. How can the impact of quantization errors on audio signals be reduced through technical means?
    14. What is the implementation logic of the automatic volume control (AVC) based on DSP?
    15. How to design a simple audio echo canceller? What are the key steps?
    16. How is the phase distortion of audio signals corrected through DSP?
    17. What are the application advantages of multi-rate signal processing in audio DSP?
    18. How to achieve dynamic range expansion of audio signals using DSP?
   19. When designing an audio equalizer, how can mutual interference between filters be avoided?
    20. In real-time audio processing, how to balance algorithm complexity and latency? (20 questions

    1.What is the core role of DSP in audio processing?
    2.What are the two key steps involved in the digitization of audio signals?
    3. What is the definition of the sampling rate? What are the commonly used audio sampling rates?
    4. What influence does the quantization bit number have on the dynamic range of an audio signal?
    5. What are the main uses of Fourier transform in audio processing?
    6. What is PCM encoding? Which basic format of digital audio is it?
    7. What types can audio filters be classified into based on their frequency response? (At least three types
    8. What is the signal-to-noise ratio? How is it calculated in digital audio?
    9. What is the function of dynamic range compression?
    10. What is the basic principle of a delay effect device?
    11. What is the function of the Audio Bus?
    12. What is the sampling theorem? What problems will violation lead to?
    13. What physical phenomenon of sound does the reverb effector simulate?
    14.What is the core difference between IIR filters and FIR filters?
    15. How does the phase of an audio signal affect stereo positioning?
    16. What is bit rate? What is its relationship with the size of the audio file?
    17. What scenarios does echo cancellation technology mainly solve?
    18. What is the working principle of an audio equalizer (EQ)?
19.What are the main differences between AES/EBU and S/PDIF in digital audio interfaces?
20. What is audio Dither? What is its function?

DSP Audio Processing Engineer Basic Technical Foundation Test Questions (20 Questions)
    1.How to design a second-order low-pass filter for 100Hz? Which key parameters need to be determined?
    2. How to avoid spectral aliasing when converting sampling rates?
    3. How do the threshold, ratio, and attack time parameters of the dynamic range compressor affect the processing effect?
    4. What practical advantages does the linear phase characteristic of FIR filters have in audio processing?
    5. How to achieve spectral analysis of audio signals using FFT? What errors should be noted?
    6. What are the selection principles for reference signals when designing an adaptive noise cancellation algorithm?
    7. What are the technical methods for delay alignment of multi-channel audio?
    8. How to achieve frequency response compensation for speakers through DSP?
    9. What is the core role of the psychoacoustic model in audio compression coding (such as MP3)?
    10. How to determine the stability of an IIR filter? What should be noted during the design process?
    11. How to calculate the short-term energy of an audio signal? In which scenarios can it be used?
    12. What spatial positioning problems does the DSP algorithm for converting stereo to surround sound need to solve?
    13. How can the impact of quantization errors on audio signals be reduced through technical means?
    14. What is the implementation logic of the automatic volume control (AVC) based on DSP?
    15. How to design a simple audio echo canceller? What are the key steps?
    16. How is the phase distortion of audio signals corrected through DSP?
    17. What are the application advantages of multi-rate signal processing in audio DSP?
   18. How to achieve dynamic range expansion of audio signals using DSP?
    19. When designing an audio equalizer, how can mutual interference between filters be avoided?
    20. In real-time audio processing, how to balance algorithm complexity and latency?