namespace AudioCore.Interfaces; public sealed class PlaybackSpeedSettings { public float Speed { get; set; } = 1.0f; // 0.5x, 1.0x, 1.5x, etc. } public interface ITimeStretchEngine { Task Configure(PlaybackSpeedSettings settings, CancellationToken token); // Streaming block processing Task IsReadyToAccept(CancellationToken token); Task Submit(MixedAudioBlock input, CancellationToken token); Task Receive(CancellationToken token); }