Invention Grant
- Patent Title: Methods for enforcing time alignment for speed resistant audio matching
- Patent Title (中): 强制音速匹配的时间对齐方法
-
Application No.: US13648472Application Date: 2012-10-10
-
Publication No.: US09069849B1Publication Date: 2015-06-30
- Inventor: Dominik Roblek , Gheorghe Postelnicu , Matthew Sharifi
- Applicant: Google Inc.
- Applicant Address: US CA Mountain View
- Assignee: Google Inc.
- Current Assignee: Google Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Amin, Turocy & Watson, LLP
- Main IPC: G06F17/00
- IPC: G06F17/00 ; G06F17/30 ; G10L21/04

Abstract:
Systems and methods are provided herein relating to speed resistant audio matching. Descriptors can be generated for a received audio signal and matched with reference descriptors. A set of hits for respective reference samples can be generated based on the matching. A histogram can then be generated that correlates probe sample hit time with reference sample hit time. In one implementation, a rolling window can be used in analyzing the histogram allowing for slight variances in the timing between probe sample hits and reference sample hits. In another implementation, the histogram generated can be based on an estimated time stretch of the probe sample. In yet another implementation, a set of histograms can be generated based on a minimum speed change, a maximum speed change, and a speed step. Histograms can be evaluated to determine a most likely matching histogram.
Information query