@diffusionstudio/core-v4/dist/utils/audio.d.ts

2D motion graphics and video rendering engine

/**
 * Converts an AudioBuffer to a Float32Array.
 * For 2 channels it will result in something like:
 * [L[0], R[0], L[1], R[1], ... , L[n], R[n]]
 */
export declare function interleave(input: AudioBuffer): Float32Array;
/**
 * Converts a Float32Array to 16-bit PCM.
 */
export declare function floatTo16BitPCM(dataview: DataView, buffer: Float32Array, offset: number): DataView;
/**
 * Converts the specified AudioBuffer to a Blob.
 *
 * Note that changing the MIME type does not change the actual file format.
 * The output is a WAVE in any case
 */
export declare function audioBufferToWav(buffer: AudioBuffer, type?: string): Blob;
/**
 * Convert an audio buffer into a planar float 32 array
 */
export declare function bufferToF32Planar(input: AudioBuffer): Float32Array;
/**
 * Conver an audio buffer inter a interleaved int 16 array
 */
export declare function bufferToI16Interleaved(audioBuffer: AudioBuffer): Int16Array;
/**
 * Merges the channels of the audio blob into a mono AudioBuffer
 */
export declare function blobToMonoBuffer(blob: Blob, sampleRate?: number, scalingFactor?: number): Promise<AudioBuffer>;
/**
 * Change the sample rate of an audio buffer
 * @param buffer The buffer to resample
 * @param sampleRate The desired sample rate
 * @param numberOfChannels The desired number of channels
 * @returns The resampled audio buffer
 */
export declare function resampleBuffer(buffer: AudioBuffer, sampleRate?: number, numberOfChannels?: number): AudioBuffer;