Struct PeakLimiter 

pub struct PeakLimiter { /* private fields */ }

True Peak Limiter with look-ahead and proper release behavior.

Design

• 10ms look-ahead buffer for peak detection
• -1.0 dBTP threshold (EBU R128 recommendation)
• Proper release coefficient using exponential smoothing
• Fixed ring buffer avoids heap allocation in audio callback

Implementations

impl PeakLimiter

pub fn new( channels: usize, sample_rate: u32, threshold_db: f64, lookahead_ms: f64, release_ms: f64, ) -> Self

Create a new True Peak Limiter

Arguments

• channels - Number of audio channels
• sample_rate - Sample rate in Hz
• threshold_db - Threshold in dBTP (default: -1.0)
• lookahead_ms - Look-ahead time in ms (default: 10.0)
• release_ms - Release time in ms (default: 100.0)

pub fn process(&mut self, samples: &mut [f64])

Process interleaved samples in-place

This function is real-time safe:

• No heap allocations
• No system calls
• O(n) complexity where n = number of samples

pub fn set_threshold_db(&mut self, threshold_db: f64)

Set threshold in dB

pub fn set_threshold(&mut self, threshold_db: f64)

Update threshold in-place without reallocating lookahead buffer.

pub fn set_release_ms(&mut self, release_ms: f64)

Update release time in-place without reallocating lookahead buffer.

pub fn is_enabled(&self) -> bool

Check if limiter is conceptually enabled (always true for PeakLimiter)

pub fn gain_reduction_db(&self) -> f64

Get current gain reduction in dB (for metering)

pub fn reset(&mut self)

Reset limiter state