Crate audio_processor_analysis

Provides implementations of some audio analysis processors.

• Peak detector - peak_detector
• FFT (Windowed/Overlapped) - fft_processor
• Transient detection (not real-time) - transient_detection::stft
• Window functions - window_functions

RMS

Real-time safe, per-sample (ticked by UI thread) RMS calculation.

Peak detector

Peak detector with adjustable attack/release times.

FFT

rustfft audio-processor, forwards or backwards, real-time safe, FFT.

Applies a Hann window by default. Several window functions are exported by window_functions.

Then performs FFT with N bins.

Overlap is configurable

Envelope follower

Envelope follower implementation with adjustable attack/release times.

Transient detection

Implements “A Transient Detection Algorithm for Audio Using Iterative Analysis of STFT.”.

Does polyphonic transient detection, able to output signal or markers

Window functions

Several window functions are implemented and configurable.

Modules

envelope_follower_processor

Envelope follower implementation

fft_processor

FFT processor implementation with windowing & overlap, wraps rustfft.

peak_detector

Peak detector implementation

running_rms_processor

RMS implementation suitable for GUI reacting to magnitude of the signal. Accumulates values on a circular buffer, the consumer calculates the RMS value based on it.

transient_detection

Polyphonic transient detection implementation

window_functions

Many window functions