Howtosignalprocessing
- What is spectrum shaping?
- What is a signal spectrum?
- What are the spectral characteristics of signal?
- How do you find the spectra of a signal?
What is spectrum shaping?
Spectral shaping is a way of applying dynamics processing across the frequency spectrum that can help bring balance to the sound of instruments and voices in a way that traditional compressors and equalizers have not been able to in the past.
What is a signal spectrum?
The signal spectrum describes a signal's magnitude and phase characteristics as a function of frequency. The system spectrum describes how the system changes signal magnitude and phase as a function of frequency. For example, At the lower frequencies, below around 80 Hz, the magnitude spectrum is 1.0.
What are the spectral characteristics of signal?
The spectral characteristics of baseband signals are fundamentally defined by their shape, including pulse interval, amplitude, and width. Since rectangular voltage pulses have a wide spectrum, the requirements for all digital loops specify filters to control the spectrum.
How do you find the spectra of a signal?
Frequency spectra of PPG signals are commonly calculated using the Fourier transform. The Fourier transform uses sinusoidal waves to map the contents of the signal to the frequency domain (Semmlow and Griffel, 2014). Sine waves can be expressed in terms of their amplitude, frequency, and phase.
