HelenOS sources

DSP_RATE_LOWER_LIMIT  340 uspace/drv/audio/sb16/dsp.c 	if (*rate < DSP_RATE_LOWER_LIMIT) {
DSP_RATE_LOWER_LIMIT  341 uspace/drv/audio/sb16/dsp.c 		*rate = DSP_RATE_LOWER_LIMIT;
HelenOS homepage, sources at GitHub