Your question is Core Signal Processing Concepts. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
What are your core signal processing concepts and how have you applied them in past projects?
Discuss the concepts you consider essential, such as sampling, aliasing, filtering, convolution, Fourier transforms, quantization, and signal-to-noise ratio. Give one concrete project example and explain the engineering choices, implementation details, and trade-offs.
Focus on practical signal-processing work using Apple platforms or related systems, including Core Audio, AVAudioEngine, and Accelerate where relevant.