A system includes a controller for receiving first and second signals representative of a load on an engine, and generating based on the signals. Harmonic scaling elements generate a scaled version of a received engine harmonic signal. Each harmonic scaling element includes a harmonic specific mapping element for mapping the control parameter to a harmonic specific scaling factor. Some of the harmonic specific scaling factor values of the harmonic specific mapping element are mapped to control parameter values associated with a negative load on the engine, and some are mapped to control parameter values associated with a positive load on the engine. The control parameter values associated with the negative load are derived from the first signal, and control parameter values associated with the positive load are derived from the second signal. An adjustable gain element applies the harmonic specific scaling factor to the received engine harmonic signal.
Engine harmonic enhancement control
2015-11-03
Patent
Electronic Resource
English
IPC: | G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES / A61F FILTERS IMPLANTABLE INTO BLOOD VESSELS , Filter in Blutgefäße implantierbar / B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / H03B Erzeugung von Schwingungen, unmittelbar oder durch Frequenzwandlung, durch Schaltungsanordnungen mit aktiven Bauelementen, die nicht als Schalter arbeiten , GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER / H04B TRANSMISSION , Übertragung |