My name is Bram (A.L. Melse). Worked 20 years in analog chip design. Last job in this area at Vitatron (Medtronic) as senior designer, member of the team responsible for the chip in a pacemaker. From my youth on interested in audio, but most of the time only reading about it... I thank Ronald van Vierzen for a quick start at NXP long ago.+
