Invention Grant
US09538308B2 Adaptive room equalization using a speaker and a handheld listening device 有权
使用扬声器和手持聆听装置进行自适应房间均衡

  • Patent Title: Adaptive room equalization using a speaker and a handheld listening device
  • Patent Title (中): 使用扬声器和手持聆听装置进行自适应房间均衡
  • Application No.: US14775585
    Application Date: 2014-03-13
  • Publication No.: US09538308B2
    Publication Date: 2017-01-03
  • Inventor: Ronald N. Isaac
  • Applicant: Apple Inc.
  • Applicant Address: US CA Cupertino
  • Assignee: Apple Inc.
  • Current Assignee: Apple Inc.
  • Current Assignee Address: US CA Cupertino
  • Agency: Blakely, Sokoloff, Taylor & Zafman LLP
  • International Application: PCT/US2014/026539 WO 20140313
  • International Announcement: WO2014/160419 WO 20141002
  • Main IPC: H04R5/02
  • IPC: H04R5/02 H04S7/00
Adaptive room equalization using a speaker and a handheld listening device
Abstract:
A loudspeaker that measures the impulse response of a listening area is described. The loudspeaker may output sounds corresponding to a segment of an audio signal. The sounds are sensed by a listening device proximate to a listener and transmitted to the loudspeaker. The loudspeaker includes an adaptive filter that estimates the impulse response of the listening area based on the signal segment. An error unit analyzes the estimated impulse response together with the sensed audio signal received from the listening device to determine the accuracy of the estimate. New estimates may be generated by the adaptive filter until an accuracy level is achieved for the signal segment. A processor may utilize one or more estimated impulse responses corresponding to various signal segments that cover a defined frequency spectrum for adjusting the audio signal to compensate for the impulse response of the listening area. Other embodiments are also described.
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