use denoize::audio::read_audio;
use denoize::denoiser::{DenoiserConfig, Preset};
use denoize::{denoise_file_with_backend_opts, Algorithm, Backend, EncodeOptions, WindowType};
const VERSION: &str = env!("CARGO_PKG_VERSION");
fn usage() -> String {
let backends = Backend::available_names().join("|");
format!(
"\
denoize {VERSION} — pure-Rust audio denoiser engineered for the world's highest sound quality
Classical DSP + optional AI backends (RNNoise, DeepFilterNet v3).
Input: WAV, MP3, M4A (built-in Pure Rust decode).
Output: WAV, MP3 (shine-rs), M4A (oxideav-aac Pure-Rust AAC-LC).
USAGE:
denoize <INPUT> <OUTPUT.wav|mp3|m4a> [OPTIONS]
OPTIONS:
-b, --backend <NAME> {backends} (default: classical)
-a, --algorithm <NAME> omlsa|logmmse|mmse|wiener|specsub|specsub-nl|specsub-geo
-p, --preset <NAME> speech|music|aggressive|gentle|restore|hifi
-s, --strength <0..1> denoising strength (default: 0.6)
--profile <MS> learn noise from first MS ms (default: auto-detect)
--no-profile no profiling; rely on blind IMCRA bootstrap
--no-adapt freeze the noise estimate
--frame <N> FFT size: 512|1024|2048|4096|8192 (default: 2048)
--overlap <F> overlap ratio 0.5..0.95 (default: 0.75)
--window <NAME> hann|hamming|sine|blackman|kaiser|flattop|dpss
--kaiser-beta <B> Kaiser window beta (default: 8.0)
--dpss-nw <NW> DPSS time-bandwidth product (default: 3.0)
--multiband enable multiband spectral subtraction
--perceptual enable Bark-scale perceptual gain weighting
--postfilter enable musical-noise suppression post-filter
--smoothing <0..1> gain release smoothing (default: 0.6)
--makeup <DB> makeup gain in dB (default: 0.0)
--no-dc-block disable DC-blocking pre-filter
--quality <LEVEL> high|ultra
--no-transient disable transient/onset protection
--cepstral enable cepstral gain smoothing
--no-cepstral disable cepstral smoothing
--pre-emphasis enable pre/de-emphasis
--no-pre-emphasis disable pre-emphasis
--report print settings report and exit
--mp3-bitrate <KBPS> MP3 CBR bitrate (default: 192)
--m4a-bitrate <KBPS> M4A/AAC CBR bitrate (default: 192)
-h, --help show this help
-V, --version show version
BACKENDS (build with --features full for all):
classical Enhanced STFT/IMCRA/OMLSA pipeline (default)
rnnoise RNNoise via nnnoiseless (requires --features rnnoise)
deepfilter DeepFilterNet v3 (requires --features deepfilter)
PRESETS:
hifi Flagship transparency: OMLSA + protections + advanced DSP
speech Voice-optimised balance
music Instruments; enables perceptual + postfilter
"
)
}
#[derive(Default)]
struct Overrides {
backend: Option<Backend>,
algorithm: Option<Algorithm>,
preset: Option<Preset>,
strength: Option<f64>,
profile_ms: Option<f64>,
no_profile: bool,
no_adapt: bool,
frame_size: Option<usize>,
overlap: Option<f64>,
window: Option<WindowType>,
kaiser_beta: Option<f64>,
dpss_nw: Option<f64>,
multiband: bool,
perceptual: bool,
postfilter: bool,
smoothing: Option<f64>,
makeup: Option<f64>,
no_dc_block: bool,
report: bool,
quality: Option<String>,
no_transient: bool,
cepstral: bool,
no_cepstral: bool,
pre_emphasis: bool,
no_pre_emphasis: bool,
mp3_bitrate_kbps: Option<u32>,
m4a_bitrate_kbps: Option<u32>,
}
fn parse_value<T>(args: &[String], i: &mut usize, flag: &str) -> Result<T, String>
where
T: std::str::FromStr,
<T as std::str::FromStr>::Err: std::fmt::Display,
{
*i += 1;
if *i >= args.len() {
return Err(format!("missing value for {flag}"));
}
args[*i]
.parse::<T>()
.map_err(|e| format!("invalid value for {flag}: {e}"))
}
fn parse_args(args: &[String]) -> Result<(String, String, Overrides), String> {
let mut input: Option<String> = None;
let mut output: Option<String> = None;
let mut ov = Overrides::default();
let mut i = 0;
while i < args.len() {
let a = &args[i];
match a.as_str() {
"-h" | "--help" => {
print!("{}", usage());
std::process::exit(0);
}
"-V" | "--version" => {
println!("denoize {VERSION}");
std::process::exit(0);
}
"-b" | "--backend" => {
let name: String = parse_value(args, &mut i, a)?;
ov.backend = Some(Backend::parse(&name).ok_or_else(|| {
format!(
"unknown backend: {name} (available: {:?})",
Backend::available_names()
)
})?);
}
"-a" | "--algorithm" => {
let name: String = parse_value(args, &mut i, a)?;
ov.algorithm = Some(
Algorithm::parse(&name).ok_or_else(|| format!("unknown algorithm: {name}"))?,
);
}
"-p" | "--preset" => {
let name: String = parse_value(args, &mut i, a)?;
ov.preset =
Some(Preset::parse(&name).ok_or_else(|| format!("unknown preset: {name}"))?);
}
"-s" | "--strength" => ov.strength = Some(parse_value(args, &mut i, a)?),
"--profile" => ov.profile_ms = Some(parse_value(args, &mut i, a)?),
"--no-profile" => ov.no_profile = true,
"--no-adapt" => ov.no_adapt = true,
"--frame" => ov.frame_size = Some(parse_value(args, &mut i, a)?),
"--overlap" => ov.overlap = Some(parse_value(args, &mut i, a)?),
"--window" => {
let name: String = parse_value(args, &mut i, a)?;
ov.window = Some(
WindowType::parse(&name).ok_or_else(|| format!("unknown window: {name}"))?,
);
}
"--kaiser-beta" => ov.kaiser_beta = Some(parse_value(args, &mut i, a)?),
"--dpss-nw" => ov.dpss_nw = Some(parse_value(args, &mut i, a)?),
"--multiband" => ov.multiband = true,
"--perceptual" => ov.perceptual = true,
"--postfilter" => ov.postfilter = true,
"--smoothing" => ov.smoothing = Some(parse_value(args, &mut i, a)?),
"--makeup" => ov.makeup = Some(parse_value(args, &mut i, a)?),
"--no-dc-block" => ov.no_dc_block = true,
"--report" => ov.report = true,
"--quality" => {
let q: String = parse_value(args, &mut i, a)?;
ov.quality = Some(q.to_ascii_lowercase());
}
"--no-transient" => ov.no_transient = true,
"--cepstral" => ov.cepstral = true,
"--no-cepstral" => ov.no_cepstral = true,
"--pre-emphasis" => ov.pre_emphasis = true,
"--no-pre-emphasis" => ov.no_pre_emphasis = true,
"--mp3-bitrate" => ov.mp3_bitrate_kbps = Some(parse_value(args, &mut i, a)?),
"--m4a-bitrate" => ov.m4a_bitrate_kbps = Some(parse_value(args, &mut i, a)?),
other if other.starts_with('-') => {
return Err(format!("unknown option: {other}"));
}
_ => {
if input.is_none() {
input = Some(a.clone());
} else if output.is_none() {
output = Some(a.clone());
} else {
return Err(format!("unexpected extra argument: {a}"));
}
}
}
i += 1;
}
let input = input.ok_or("missing INPUT")?;
let output = output.ok_or("missing OUTPUT (.wav|.mp3|.m4a)")?;
Ok((input, output, ov))
}
fn build_config(ov: &Overrides, sample_rate: u32) -> DenoiserConfig {
let mut cfg = match ov.preset {
Some(p) => p.config(sample_rate),
None => DenoiserConfig::default(sample_rate),
};
if let Some(a) = ov.algorithm {
cfg.algorithm = a;
}
if let Some(s) = ov.strength {
cfg.strength = s;
}
if ov.no_profile {
cfg.profile_ms = -1.0;
} else if let Some(ms) = ov.profile_ms {
cfg.profile_ms = ms;
}
if ov.no_adapt {
cfg.adapt = false;
}
if let Some(f) = ov.frame_size {
cfg.frame_size = f;
}
if let Some(o) = ov.overlap {
cfg.overlap = o;
}
if let Some(w) = ov.window {
cfg.window = w;
}
if let Some(b) = ov.kaiser_beta {
cfg.window_params.kaiser_beta = b;
}
if let Some(nw) = ov.dpss_nw {
cfg.window_params.dpss_bandwidth = nw;
}
if ov.multiband {
cfg.multiband = true;
}
if ov.perceptual {
cfg.perceptual_weighting = true;
}
if ov.postfilter {
cfg.musical_noise_postfilter = true;
}
if let Some(s) = ov.smoothing {
cfg.smoothing = s;
}
if let Some(m) = ov.makeup {
cfg.makeup_gain_db = m;
}
if ov.no_dc_block {
cfg.dc_block = false;
}
if let Some(ref q) = ov.quality {
match q.as_str() {
"high" => {
if cfg.frame_size < 2048 {
cfg.frame_size = 2048;
}
if cfg.overlap < 0.8 {
cfg.overlap = 0.8;
}
cfg.transient_protect = true;
cfg.cepstral_smoothing = true;
cfg.perceptual_weighting = true;
cfg.musical_noise_postfilter = true;
if !ov.no_pre_emphasis {
cfg.pre_emphasis = true;
}
}
"ultra" | "max" | "highest" => {
cfg.frame_size = cfg.frame_size.max(4096);
cfg.overlap = 0.875;
cfg.window = WindowType::Kaiser;
cfg.window_params.kaiser_beta = 10.0;
cfg.transient_protect = true;
cfg.cepstral_smoothing = true;
cfg.perceptual_weighting = true;
cfg.musical_noise_postfilter = true;
cfg.pre_emphasis = true;
if ov.strength.is_none() && cfg.strength > 0.4 {
cfg.strength = 0.32;
}
}
_ => {}
}
}
if ov.no_transient {
cfg.transient_protect = false;
}
if ov.cepstral {
cfg.cepstral_smoothing = true;
}
if ov.no_cepstral {
cfg.cepstral_smoothing = false;
}
if ov.pre_emphasis {
cfg.pre_emphasis = true;
}
if ov.no_pre_emphasis {
cfg.pre_emphasis = false;
}
cfg
}
fn print_report(input: &str, audio: &denoize::Audio, cfg: &DenoiserConfig, backend: Backend) {
let hop = (cfg.frame_size as f64 * (1.0 - cfg.overlap)).round() as usize;
let g_min_db = -20.0 - 25.0 * cfg.strength;
let dur = audio.frames() as f64 / audio.sample_rate as f64;
println!("input : {input}");
println!(
"format : {}ch, {:.2}s ({} frames), {} Hz, {}-bit {:?}",
audio.channels(),
dur,
audio.frames(),
audio.sample_rate,
audio.bits_per_sample,
audio.sample_format,
);
println!("backend : {backend:?}");
println!("algorithm : {:?}", cfg.algorithm);
println!(
"strength : {:.2} (gain floor ~{:.0} dB)",
cfg.strength, g_min_db
);
println!(
"STFT : frame={}, hop={}, overlap={:.0}%, window={:?}",
cfg.frame_size,
hop,
cfg.overlap * 100.0,
cfg.window,
);
println!(
"advanced : multiband={}, perceptual={}, postfilter={}",
cfg.multiband, cfg.perceptual_weighting, cfg.musical_noise_postfilter
);
println!("smoothing : {:.2}", cfg.smoothing);
println!(
"profile : {}",
if cfg.profile_ms < 0.0 {
"disabled".to_string()
} else if cfg.profile_ms == 0.0 {
"auto (leading silence)".to_string()
} else {
format!("{:.0} ms", cfg.profile_ms)
}
);
println!("adapt : {}", cfg.adapt);
println!("dc-block : {}", cfg.dc_block);
println!("makeup : {:.1} dB", cfg.makeup_gain_db);
println!(
"hi-fi : transient={}, cepstral={}, pre-emphasis={}",
cfg.transient_protect, cfg.cepstral_smoothing, cfg.pre_emphasis
);
}
fn run(args: &[String]) -> Result<(), String> {
let (input, output, ov) = parse_args(args)?;
let audio = read_audio(&input)?;
let cfg = build_config(&ov, audio.sample_rate);
let backend = ov.backend.unwrap_or(Backend::Classical);
if ov.report {
print_report(&input, &audio, &cfg, backend);
return Ok(());
}
let mut enc = EncodeOptions::default();
if let Some(kbps) = ov.mp3_bitrate_kbps {
enc.mp3_bitrate_kbps = kbps;
}
if let Some(kbps) = ov.m4a_bitrate_kbps {
enc.m4a_bitrate_bps = kbps.saturating_mul(1000);
}
denoise_file_with_backend_opts(&input, &output, cfg, backend, enc)?;
Ok(())
}
fn main() {
let args: Vec<String> = std::env::args().skip(1).collect();
if let Err(e) = run(&args) {
eprintln!("denoize: error: {e}");
eprintln!("run 'denoize --help' for usage.");
std::process::exit(1);
}
}