/** Low-level options for constructing a {@link Denoise} directly. Prefer the per-provider factories. */
export type DenoiseOptions = {
    /** Denoise provider name. Default: `''`. */
    provider?: string;
    /** Provider model identifier. Default: `''`. */
    modelId?: string;
    /** Model input sample rate in Hz. Default: `null`. */
    modelSampleRate?: number | null;
    /** Audio chunk size in milliseconds. Default: `null`. */
    chunkMs?: number | null;
    /** Auth token; falls back to the `ZRT_AUTH_TOKEN` environment variable. Default: `null`. */
    gatewayToken?: string | null;
    /** Override base URL for the provider. Default: `null`. */
    baseUrl?: string | null;
    maxDelayMs?: number | null;
    [key: string]: any;
};
/** Options for {@link Denoise.sanas}. */
export type DenoiseSanasOptions = {
    /** Model identifier. Default: `'VI_G_NC3.0'`. */
    modelId?: string;
    /** Model input sample rate in Hz. Default: `16000`. */
    sampleRate?: number;
    /** Audio chunk size in milliseconds. Default: `20`. */
    chunkMs?: number;
    /** Auth token; falls back to `ZRT_AUTH_TOKEN`. Default: `null`. */
    gatewayToken?: string | null;
    /** Override base URL. Default: `null`. */
    baseUrl?: string | null;
    /** Output latency budget in ms for the denoise delay line. Default: `null` (runtime default). */
    maxDelayMs?: number | null;
};
/** Options for {@link Denoise.aicoustics}. */
export type DenoiseAicousticsOptions = {
    /** Model identifier. Default: `'rook-l-48khz'`. */
    modelId?: string;
    /** Model input sample rate in Hz. Default: `48000`. */
    sampleRate?: number;
    /** Audio chunk size in milliseconds. Default: `10`. */
    chunkMs?: number;
    /** Auth token; falls back to `ZRT_AUTH_TOKEN`. Default: `null`. */
    gatewayToken?: string | null;
    /** Override base URL. Default: `null`. */
    baseUrl?: string | null;
    /** Output latency budget in ms for the denoise delay line. Default: `null` (runtime default). */
    maxDelayMs?: number | null;
};
/** Options for {@link Denoise.krisp}. */
export type DenoiseKrispOptions = {
    /** Provider override. Default: unused. */
    provider?: string | null;
    /** Model identifier. Default: `'kv5'`. */
    modelId?: string;
    /** Model input sample rate in Hz. Default: `48000`. */
    sampleRate?: number;
    /** Audio chunk size in milliseconds. Default: `10`. */
    chunkMs?: number;
    /** Auth token; falls back to `ZRT_AUTH_TOKEN`. Default: `null`. */
    gatewayToken?: string | null;
    /** Override base URL. Default: `null`. */
    baseUrl?: string | null;
    /** Output latency budget in ms for the denoise delay line. Default: `null` (runtime default). */
    maxDelayMs?: number | null;
};
/**
 * Noise-suppression configuration applied to inbound audio. Use the static
 * factories ({@link Denoise.rnnoise}, {@link Denoise.sanas}, {@link Denoise.aicoustics},
 * {@link Denoise.krisp}) to select a provider.
 */
export declare class Denoise {
    _providerName: string;
    /** Provider model identifier. */
    modelId: string;
    /** Model input sample rate in Hz, or `null` for the provider default. */
    modelSampleRate: number | null;
    /** Audio chunk size in milliseconds, or `null` for the provider default. */
    chunkMs: number | null;
    /** Auth token used to reach the provider. */
    gatewayToken: string | null;
    /** Override base URL for the provider, or `null` for the default. */
    baseUrl: string | null;
    /** Output latency budget in ms for the denoise delay line, or `null` for the runtime default. */
    maxDelayMs: number | null;
    _isInference?: boolean;
    constructor(opts?: DenoiseOptions);
    /** Denoise using the built-in RNNoise model (no external provider). */
    static rnnoise(): Denoise;
    /** Denoise using the Sanas provider. */
    static sanas(opts?: DenoiseSanasOptions): Denoise;
    /** Denoise using the ai-coustics provider. */
    static aicoustics(opts?: DenoiseAicousticsOptions): Denoise;
    /** Denoise using the Krisp provider. */
    static krisp(opts?: DenoiseKrispOptions): Denoise;
}