SOUND-DEPENDENT ANR SIGNAL PROCESSING ADJUSTMENT

PROBLEM TO BE SOLVED: To provide a sound-dependent active noise reduction (ANR) signal processing adjustment method.SOLUTION: The method includes the steps of: using an external noise sound detected in an external environment of a casing of a personal ANR device as a feedforward reference sound to g...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	CARRERAS RICARDO F, PERICLES NICHOLAS BAKALOS, GAUGER DANIEL M, JASON HARLOW
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR BASIC ELECTRONIC CIRCUITRY CONTROL OF AMPLIFICATION DEAF-AID SETS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PHYSICS PUBLIC ADDRESS SYSTEMS SOUND-PRODUCING DEVICES
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sound-dependent active noise reduction (ANR) signal processing adjustment method.SOLUTION: The method includes the steps of: using an external noise sound detected in an external environment of a casing of a personal ANR device as a feedforward reference sound to generate a feedforward anti-noise sound; using a cavity noise sound detected within a cavity limited by the casing and acoustically coupled to an external auditory meatus as a feedback reference sound to generate a feedback anti-noise sound; acoustically outputting the feedforward and feedback anti-noise sounds into the cavity; and adjusting compression of the feedforward and feedback reference sounds in response to acoustic energy of the external noise sound achieving a first threshold value.