woodelf wrote: From the article: 3 - Alarm annucator (future: is 4k or so enough for a small sample?) Possibly. A very small sample, though... Some old Simmons drum synths used an EPROM containing a sampled drum hit for each channel. Mostly they used 2764 or 27128 EPROMS, although the bass drum sample in mine is on a 2732. Playback was by means of a counter (change the counter clock to change the pitch) and a D-A converter on the data lines. It depends on the sample rate you want - for approximately telephone quality you need about an 8kHz sample rate, which would give you about half a second in 4k. Gordon.