const toWavBuffer = (audiobuffer: Uint8Array) => {
    // This function is basically a refactor of RenderBuffer

    const text2Uint8Array = (text: string) => {
        const buffer = new Uint8Array(text.length);
        text.split("").forEach((e, index) => {
            buffer[index] = e.charCodeAt(0);
        });
        return buffer;
    };

    // Calculate buffer size.
    const realbuffer = new Uint8Array(
            // ...
    );

    let pos = 0;
    const write = (buffer: Uint8Array) => {
        realbuffer.set(buffer, pos);
        pos += buffer.length;
    };

    //RIFF header
    write(text2Uint8Array("RIFF")); // chunkID
    write(Uint32ToUint8Array(audiobuffer.length + 12 + 16 + 8 - 8)); // ChunkSize
    write(text2Uint8Array("WAVE")); // riffType
    //format chunk
    write(text2Uint8Array("fmt "));
    write(Uint32ToUint8Array(16)); // ChunkSize
    write(Uint16ToUint8Array(1)); // wFormatTag - 1 = PCM
    write(Uint16ToUint8Array(1)); // channels
    write(Uint32ToUint8Array(22050)); // samplerate
    write(Uint32ToUint8Array(22050)); // bytes/second
    write(Uint16ToUint8Array(1)); // blockalign
    write(Uint16ToUint8Array(8)); // bits per sample
    //data chunk
    write(text2Uint8Array("data"));
    write(Uint32ToUint8Array(audiobuffer.length)); // buffer length
    write(audiobuffer);

    return realbuffer;
}

const DownloadBuffer = (audiobuffer: Uint8Array) => {
     const blob = new Blob([toWavBuffer(realbuffer)], { type: "audio/wav" });
     // Other code to download buffer
}