I have the following code snippet:

static byte[] generateSound(double frequency, int sampleRate, int samples) {
    byte output[] = new byte[2 * samples];
    
    int idx = 0;
    
    double _tone = 2 * Math.PI / (sampleRate / frequency);
    
    for (int i = 0; i < samples; ++i) {
        double dVal = Math.sin(_tone * i);

        final short val = (short) ((dVal * 32767));

        output[idx++] = (byte) (val & 0x00ff);
        output[idx++] = (byte) ((val & 0xff00) >>> 8);
    }

    return output;
}

Is there any legroom left for optimization (without switching to C)?

Is there any legroom left for optimization (without switching to C)?

static byte[] generateSound(double frequency, int sampleRate, int samples) {
    byte output[] = new byte[2 * samples];
    
    int idx = 0;
    
    double _tone = 2 * Math.PI / (sampleRate / frequency);
    
    for (int i = 0; i < samples; ++i) {
        double dVal = Math.sin(_tone * i);

        final short val = (short) ((dVal * 32767));

        output[idx++] = (byte) (val & 0x00ff);
        output[idx++] = (byte) ((val & 0xff00) >>> 8);
    }

    return output;
}