Resumen: In domestic induction heating (IH) applications, the modulation technique applied to the inverter has a high influence on the acoustic noise emissions. These noise emissions must be avoided since they may be audible and annoying to the final user. This paper analyzes the acoustic noise emissions that appear when a series half-bridge resonant inverter is operated with a phase-accumulator based modulator. This modulation technique has the advantage of operating in the frequency domain, and it is compared with the classical PWM modulator regarding the audible noise generated. The frequencies of the tones in the acoustic noise spectrum are theoretically calculated from the parameters of the phaseaccumulator based modulator. The SFM (Spectral Flatness Measure) is used to quantify the number of cases in which tones are generated by the modulation. Two techniques are applied to the phase-accumulator based modulator and their effect is tested. Theoretical results are experimentally verified. Idioma: Inglés DOI: 10.1109/TIE.2018.2870351 Año: 2018 Publicado en: IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS 66, 8 (2018), 5929-5938 ISSN: 0278-0046 Factor impacto JCR: 7.503 (2018) Categ. JCR: AUTOMATION & CONTROL SYSTEMS rank: 2 / 62 = 0.032 (2018) - Q1 - T1 Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 1 / 61 = 0.016 (2018) - Q1 - T1 Categ. JCR: ENGINEERING, ELECTRICAL & ELECTRONIC rank: 14 / 265 = 0.053 (2018) - Q1 - T1 Factor impacto SCIMAGO: 2.4 - Computer Science Applications (Q1) - Electrical and Electronic Engineering (Q1) - Control and Systems Engineering (Q1)