To provide a received speech processing apparatus in which the articulation of a speech is improved while deterioration and variation in tone quality are maintained without greatly varying the sound volume of a speech.
A target spectrum is calculated based upon compressibility for speech spectra set for each frequency band; gains for amplifying a speech spectrum up to the target spectrum are calculated for each frequency band; a filter coefficient for filter processing of a received speech signal is calculated from a gain value and set; and the filter processing is performed for the received speech signal to amplify a small-signal-level part of the received speed, such as consonants, up to a listenable level, thereby improving the articulation of the speech.
| JPH03284000A | 1991-12-13 | |||
| JP2000349893A | 2000-12-15 | |||
| JPH1117778A | 1999-01-22 | |||
| JPH11202896A | 1999-07-30 | |||
| JP2002149200A | 2002-05-24 | |||
| JP2003264892A | 2003-09-19 |
鈴木 他: "「継時マスキングの補償に基づく音声強調方法の提案と評価」", 電子情報通信学会技術研究報告 音声SP91-131〜139, vol. 91, no. 513, JPN7008008025, 13 March 1992 (1992-03-13), pages 31 - 37, ISSN: 0001174157