Signal processing apparatus and signal processing method
US8498435B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2011 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Mar 15, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/43
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A signal processing apparatus and signal processing method capable of correctly detecting that a conversation is established even in a daily environment are provided. In signal processing apparatus (100), excitation separation section (130) separates a mixed sound signal in which a plurality of excitations are mixed into the respective excitations. Speech detection section (140) performs speech detection on the plurality of separated excitation signals, judges whether or not the plurality of excitation signals are speech and generates speech section information indicating speech/non-speech information for each excitation signal. Identification parameter extraction section (150) extracts an identification parameter indicating a feature value of a daily conversation based on a plurality of excitation signals or speech section information. Conversation establishment degree calculation section (160) calculates and outputs a degree of establishment of a conversation based on the extracted identification parameter. Conversation partner identifying section (170) judges which excitation is a conversation partner using the degree of establishment of a conversation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.