Explore MATLAB source code curated for "频谱图" with clean implementations, documentation, and examples.
Performing time-frequency analysis using Short-Time Fourier Transform with comparative spectrograms illustrating the impact of varying window sizes on frequency resolution and temporal precision.
Single pulse signal generation in short-range mode, including spectrum diagram, ambiguity function plot, ambiguity contour map, autocorrelation function graph, and Doppler sensitivity analysis with code implementation approaches
Record personal voice signals using audio recording functions. Perform sampling operations with specified rates using functions like `audiorecorder()` in MATLAB. Plot time-domain waveforms using `plot()` and spectrograms using `spectrogram()` functions. Implement noise addition through random signal generation and denoising using filtering techniques like Wiener filtering or wavelet denoising. Compare pre/post-filtering signals through waveform comparison and spectral analysis. Achieve audio playback using `sound()` function with variable sampling rates for fast/slow playback effects.
This program implements signal frequency analysis using the Chirp Z-Transform (CZT) algorithm, generating the signal waveform plot, FFT-transformed spectrum diagram, and CZT-transformed waveform plot with enhanced computational precision in targeted frequency ranges.
Implementation of spectrogram visualization along with signal-to-noise ratio (SNR) and mean square error (MSE) calculations for audio signal processing
1. Fourier Transform of Images and Spectrum Centralization with fftshift Implementation 2. Rotational Property of Fourier Transform and Its Application in Image Analysis 3. Ideal Low-Pass Filter Implementation with Frequency Domain Masking 4. Butterworth High-Pass Filter Design Using Order and Cutoff Frequency Parameters
DFT: Discrete Fourier Transform - Generate Spectrum Plots After Execution with Implementation Insights