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Test the production speed boundary directly

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Signed-off-by: John Tennant <johnmatthewtennant@gmail.com>
This commit is contained in:
John Tennant
2026-07-29 12:42:04 -04:00
committed by John Tennant
parent 8b87b09381
commit e914b1c18a
2 changed files with 5 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
desktop/src-tauri/examples/tts_speed_probe.rs
+1 -3
View File
@@ -4,7 +4,6 @@ use std::time::Instant;
mod playback_speed_dsp;
const SAMPLE_RATE: u32 = 24_000;
const SENTENCE_LEAD_IN_SAMPLES: usize = 480;
const TONE_SECONDS: f64 = 10.0;
fn main() {
@@ -16,7 +15,6 @@ fn main() {
let compensated_lookahead = playback_speed_dsp::compensated_output_latency_samples(SAMPLE_RATE);
let compensated_lookahead_ms = compensated_lookahead as f64 * 1_000.0 / SAMPLE_RATE as f64;
let fixed_lead_in_ms = SENTENCE_LEAD_IN_SAMPLES as f64 * 1_000.0 / SAMPLE_RATE as f64;
for speed in [0.75_f32, 1.25, 1.5] {
let started = Instant::now();
@@ -25,7 +23,7 @@ fn main() {
let elapsed = started.elapsed();
println!(
"{speed:.2}x: processing={:.2}ms, {:.3}% realtime, output={} samples, compensated \
lookahead={compensated_lookahead_ms:.1}ms, fixed playback lead-in={fixed_lead_in_ms:.1}ms",
DSP lookahead={compensated_lookahead_ms:.1}ms",
elapsed.as_secs_f64() * 1_000.0,
elapsed.as_secs_f64() / TONE_SECONDS * 100.0,
output.len(),
desktop/src-tauri/src/huddle/playback_speed.rs
+4 -21
View File
@@ -25,8 +25,6 @@ pub(crate) use playback_speed_dsp::process_complete_chunk;
use playback_speed_dsp::{validate_speed, DEFAULT_PLAYBACK_SPEED};
const SETTINGS_FILE: &str = "tts-playback-settings.json";
#[cfg(test)]
use playback_speed_dsp::UNITY_EPSILON;
/// Lock-free shared control read by the TTS worker before each synthesis chunk.
#[derive(Clone, Debug)]
@@ -135,22 +133,6 @@ fn save_to_path(path: &Path, speed: f32) -> Result<(), String> {
.map_err(|error| format!("commit {}: {error}", resolved.display()))
}
#[cfg(test)]
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
enum ProcessorKind {
Bypass,
Signalsmith,
}
#[cfg(test)]
fn processor_kind(speed: f32) -> ProcessorKind {
if (speed - DEFAULT_PLAYBACK_SPEED).abs() <= UNITY_EPSILON {
ProcessorKind::Bypass
} else {
ProcessorKind::Signalsmith
}
}
#[cfg(test)]
mod tests {
use super::*;
@@ -158,9 +140,10 @@ mod tests {
const SAMPLE_RATE: u32 = 24_000;
#[test]
fn selects_bypass_only_at_unity() {
assert_eq!(processor_kind(1.0), ProcessorKind::Bypass);
assert_eq!(processor_kind(1.25), ProcessorKind::Signalsmith);
fn unity_processing_is_a_bit_exact_bypass() {
let input = vec![0.0, 0.125, -0.5, 1.0];
let output = process_complete_chunk(&input, 1.0, SAMPLE_RATE).expect("unity output");
assert_eq!(output, input);
}
#[test]