Which format does arts need in order to play the samples correctly?

[Jorge]

I'm still stuck with my arts problem. I have a muLaw sample that I need to playback on arts.
If I play the uLaw sample with a test program I've written, I get the same crappy sound as
if played by artscat.

Arnold suggested that the format should be WAV, and there comes the next problem, has
someone a function that converts a uLaw to WAV? I've looked throught the internet and
have found the following:

static int ulaw_to_linear(unsigned char byte)
{
	static int exp[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };

	int	sign;
	int	exponent;
	int	mantissa;
	int	sample;

	byte = ~byte;
	sign		= (byte & 0x80);
	exponent = (byte >> 4) & 0x07;
	mantissa = byte & 0x0F;
	sample	= exp[exponent] + (mantissa << (exponent + 3));

	if (sign != 0) sample = -sample;

	return(sample);
}

AND

static int ulaw_to_s16(unsigned char byte)
{
	int t;

	/* Complement to obtain normal u-law value. */
	byte = ~byte;

	/*
	 * Extract and bias the quantization bits. Then
	 * shift up by the segment number and subtract out the bias.
	 */
	t = ((byte & 0x0f) << 3) + 0x84;
	t <<= (byte & 0x70) >> 4;

	return ((byte & 0x80) ? (0x84 - t) : (t - 0x84));
}

But if I use them the sound is worse than being played without conversion. I've
still not found any uLaw to WAV conversion function.

Any functions? Any links? Suggestions?

Thank you.